MedWorm.com provides a medical RSS filtering service. Over 6000 RSS medical sources are combined and output via different filters. This feed contains the latest items from the 'The Bulletin of Tokyo Dental College' source. Tue, 13 Dec 2011 00:41:14 +0100 http://www.medworm.com/index.php?rid=5316301&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21986393%26dopt%3DAbstract Authors: Sugiyama T, Kameyama A, Yamakura D, Morinaga K, Tsunoda M Abstract Many patients visit oral malodor clinics because of malodors which are brought to their attention by friends and family, or because they note the behavior of people around them, they suspect a problem and develop a fear of having an oral malodor. However, only around 30% of such patients actually have levels of malodor high enough to bother other people. Many patients exhibit halitophobia symptoms, which present as selfperception of malodor, and thus have a strong obsession about their smell which results in distress. Here, we carried out a study on 300 outpatients who visited the Tokyo Dental College Chiba Hospital Odor Clinic. We used the Tokyo University Egogram (TEG) to elucidate character traits of aff... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=5316301 Sat, 15 Oct 2011 10:35:19 +0100 5316301 http://www.medworm.com/index.php?rid=5316300&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21986394%26dopt%3DAbstract Authors: Furusawa M, Takahashi J, Isoyama M, Kitamura Y, Kashima T, Ueshima F, Nakahama N, Araki M, Rokukawa Y, Takahashi Y, Makiishi T, Yatabe K Abstract The purpose of this study was to compare the effectiveness of dental checkupsincorporating tooth-brushing instruction (TBI) with that of conventional dental checkups. A team consisting of one dentist and three dental hygienists saw an average of 60 employees per day on-site at an airline company. The patient's teeth were stained with a disclosing tablet and the results recorded on a Plaque Control Record (PCR) chart. The patient was then given TBI. After recording the relevant data, including TBI given and PCR scores, the charts were stored. Checkups were performed in a total of 3,854 patients between 2001 and 2005 and changes in... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=5316300 Sat, 15 Oct 2011 10:35:19 +0100 5316300 http://www.medworm.com/index.php?rid=5316299&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21986395%26dopt%3DAbstract Authors: Morimoto M, Watanabe Y, Arisaka T, Takada A, Tonogi M, Yamane GY, Fukushima D, Takahashi S, Tanaka Y Abstract The patient was a 51-year-old man who had been prescribed carbamazepine for right third-branch trigeminal neuralgia. He had stopped taking the medication after the neuralgia resolved. When the neuralgia recurred, he resumed medication, and about 1 month later he developed fever, fatigue, cervical lymphadenopathy, generalized skin flushing, facial edema and perioral vesicles, and was admitted to Ichikawa General Hospital, Tokyo Dental College. Oral findings showed reddening and erosion of the buccal mucosa. Routine laboratory examination revealed leukocytosis and hepatic dysfunction. Human herpesvirus 6 antibody titer remarkably increased during development of erupt... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=5316299 Sat, 15 Oct 2011 10:35:19 +0100 5316299 http://www.medworm.com/index.php?rid=5316298&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21986396%26dopt%3DAbstract In this study, we investigated the effect of a bowlshaped spoon on liquid intake. The aim of this study was to determine the appropriate form of spoon for infant feeding development. Eleven healthy infants (3 girls and 8 boys, 10-18 months old, mean age: 13.3 months) were recruited with their guardians' consent. We made 3 types of prototype spoon: A, oval (a standard renge soup spoon); B, flared-out (with the margin of the bowl flared out); and C, hemispherical (with a hemispherical bottom, and smaller than type A or B). We observed infants taking liquid supported by their mothers and evaluated the following responses: 1) confusion with regard to lip position, 2) spillage and 3) choking. Type C showed statistically less confusion with regard to lip position than type A or B (p<0.01), an... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=5316298 Sat, 15 Oct 2011 10:35:19 +0100 5316298 http://www.medworm.com/index.php?rid=5316297&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21986397%26dopt%3DAbstract Authors: Hanaoka Y, Tsuzuki T, Yoshida M, Iwahara K, Suyama Y, Matsukubo T, Sato Y, Minaguchi K Abstract In dental identification, the collection of intra-oral images is extremely important. We propose the Dental Watch(®) as a new device for collecting intra-oral findings in situations where sufficient jaw-opening or adequate lighting cannot be obtained in such cases of dead bodies within a day after death or burned bodies encountered in mass disaster. This device is an improved home video camera for taking intra-oral images. It is lightweight and cordless, allowing it to be operated with one hand, and an audio function allows comments to be made and recorded on obtaining findings at the same time as images are taken. In addition, this device allows images of the entire oral cavit... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=5316297 Sat, 15 Oct 2011 10:35:19 +0100 5316297 http://www.medworm.com/index.php?rid=5316296&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21986398%26dopt%3DAbstract Authors: Yoshino K, Watanabe H, Fukai K, Sugihara N, Matsukubo T Abstract The aim of this study was to determine the relationship between number of present teeth (PT) and number of occlusal units (OUs). The data were obtained from a periodontal disease examination based on the health promotion law in Tokyo, Japan in 2005. Data from a total of 1,549 (524 male and 1,025 female) 60-year-old people were analyzed in this study. The number of OUs was counted by analyzing their dental charts. Any pair of opposing teeth of the same type was counted as one OU. The maximum number of OUs in a 28-tooth dentition was therefore 14. Our study revealed that the mean number of OUs decreased along with the number of PT. The OUs of the molars were lost first, followed by those of the premolars. The a... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=5316296 Sat, 15 Oct 2011 10:35:19 +0100 5316296 http://www.medworm.com/index.php?rid=5012069&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21701118%26dopt%3DAbstract Authors: Onodera K, Sato T, Nomoto S, Miho O, Yotsuya M The purpose of the present study was to determine the relationship between cross-sectional design and fracture load using a static load bearing test in yttria-stabilized tetragonal zirconia polycrystal ceramic frameworks on a molar fixed partial denture. The test framework was designed as a 3-unit bridge with two abutment teeth at the second premolar and second molar of the mandible. The cross-sectional area of the connector was 9.0, 7.0, or 5.0mm(2). In terms of shape, the cross-section was either circular or oval, with a height/width ratio of 1:1, 3:4, or 2:3. For each of the 9 combinations of cross-sectional area and shape, 5 frameworks were prepared (45 in total). Frameworks were cemented to a metallic test model with adhesive... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=5012069 Tue, 12 Jul 2011 09:00:02 +0100 5012069 http://www.medworm.com/index.php?rid=5012068&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21701119%26dopt%3DAbstract Authors: Tazaki Y, Tazaki M, Inoue T, Shimono M The aim of the present study was to determine the reason isolated single Merkel cells do not respond to mechanical stimulation by fluorescent or histological techniques. Cells identified as Merkel cells by quinacrine fluorescence and measurement of intracellular calcium concentration were observed by transmission electron and scanning electron microscopy. Observations elucidated that the cylindrical cytoplasmic processes of single Merkel cells disappeared with time shortly after isolation. Transmission electron microscopy revealed the presence of numerous dense-cored granules, which may function as sensory receptors in the cytoplasm of the isolated single Merkel cell. Disappearance of the cylindrical cytoplasmic processes impeded receptio... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=5012068 Tue, 12 Jul 2011 09:00:02 +0100 5012068 http://www.medworm.com/index.php?rid=5012067&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21701120%26dopt%3DAbstract This study used 90 maxillary first molars. Three-dimensional reconstruction was performed using data obtained by Micro-CT, and cross-sections of the root canals were observed. Moreover, the root canal morphology was classified by the configuration and root canal diameter, and was evaluated for occurrence using the classification by Weine et al. (1969) as a reference. Overall, single root canals were observed in 44.4%, incomplete separation root canals in 22.3%, and completely separate root canals (upper and lower separation root canals) in 33.3%. Mesiobuccal root canals often had intricate configurations, and accessory root canals (lateral canals and apical ramifications) were observed in most of the mesiobuccal root canals (76.7%), irrespective of whether there were ramifications of the m... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=5012067 Tue, 12 Jul 2011 09:00:02 +0100 5012067 http://www.medworm.com/index.php?rid=5012066&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21701121%26dopt%3DAbstract Authors: Fujimoto M, Ukichi K, Okamura T, Takada A, Fukushima D, Morimoto M, Yamane GY, Takahashi S Metals used in the oral cavity have been reported to cause various allergic diseases of the skin and mucosa. Skin manifestations due to dental restorations appear not only in the oral cavity, but also on the hands, feet or the whole body, as in the cases of pustulosis palmoplantaris and lichen planus. These phenomena implicate different pathogeneses from that of conventional skin sensitization and tolerance. Therefore, we compared skin and oral mucosa sensitization with nickel and oral tolerance for nickel in a mouse model. Female C57BL/6J mice were sensitized by injection of NiSO(4) into the skin or oral mucosa. Allergic reactions were evaluated by the mouse ear swelling test and spleno... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=5012066 Tue, 12 Jul 2011 09:00:02 +0100 5012066 http://www.medworm.com/index.php?rid=5012065&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21701122%26dopt%3DAbstract This study investigated the effects of diode (GaAlAs) laser irradiation at an effective energy density of 5 or 20 J/cm(2) on cell growth factor-induced differentiation and proliferation in pheochromocytoma cells (PC12 cells), and whether those effects were related to activation of the p38 pathway. Laser irradiation at 20 J/cm(2) significantly decreased the number of PC12 cells, while no difference was seen between the 5 J/cm(2) group and the control group (p<0.05). Western blotting revealed marked expression of neurofilament and β-tubulin, indicating greater neurite differentiation in the irradiation groups than in the control group at 48 hr. Irradiation also enhanced expression of phospho-p38. The decrease in number of cells after laser irradiation was accelerated by p38 inhibitor, wh... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=5012065 Tue, 12 Jul 2011 09:00:02 +0100 5012065 http://www.medworm.com/index.php?rid=5012064&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21701123%26dopt%3DAbstract In this report, we describe the management of three cases of unilateral cleft lip and palate by interdental distraction osteogenesis. Interdental distraction osteogenesis of the maxillary bone was performed to reduce the width of the alveolar cleft in these patients in conjunction with orthodontic treatment. Tooth-tooth type distraction devices were fabricated and delivered at the same time as osteotomy. Distraction was continued until the midline of the dentition coincided with the facial midline, and until the width of the alveolar cleft was reduced to the width of lateral incisor or had closed. One month after distraction was complete, orthodontic treatment with an edgewise appliance was initiated, and neighboring teeth were moved into the newly created bone. A favorable treatment outco... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=5012064 Tue, 12 Jul 2011 09:00:02 +0100 5012064 http://www.medworm.com/index.php?rid=5012063&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21701124%26dopt%3DAbstract Authors: Yumura J, Nakata E, Miyata M, Ichinohe T, Kaneko Y Clinically, the incidence of postoperative nausea and vomiting (PONV) may be higher in mentally challenged patients than in normal healthy patients. The aim of this study was to investigate the risk factors for PONV after day care general anesthesia in mentally challenged patients undergoing dental treatment. We analyzed data on 231 day care general anesthesia cases involving mentally challenged patients undergoing dental treatment. Anesthetic records for the past 5 years were investigated retrospectively. Ten items (age, body weight, sex, duration of general anesthesia, use of propofol, use of sevoflurane, use of nitrous oxide, use of neostigmine, treatment accompanied with bleeding, and transfusion volume) were selected as r... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=5012063 Tue, 12 Jul 2011 09:00:02 +0100 5012063 http://www.medworm.com/index.php?rid=4718938&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21467776%26dopt%3DAbstract Authors: Wakoh M, Okawa Y, Otonari-Yamamoto M, Kamio T, Sakamoto J, Yamamoto A, Sano T, Hashimoto K, Araki M The purpose of this study was to investigate degree of observer reliance (RD) on specific diagnostic elements in differential diagnosis of ameloblastoma (AB) and keratocystic odontogenic tumors (KOT) on panoramic images. The RD for 12 diagnostic elements, including 2 clinical and 10 radiographic elements, as recorded by eight dental radiologists on an ordinal ranking scale, was determined for 9 ABs and 9 KOTs. Intraobserver (IaOC) and inter-observer concordance (IeOC) for both ABs and KOTs were statistically analyzed in terms of RD. Significant differences in IeOC were also investigated between ABs and KOTs. The ranking of diagnostic elements was identified in each case of AB or... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4718938 Sat, 16 Apr 2011 06:15:03 +0100 4718938 http://www.medworm.com/index.php?rid=4718937&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21467777%26dopt%3DAbstract Authors: Ukichi K, Okamura T, Fukushima D, Morimoto M, Yamane GY, Takahashi S In order to compare delayed-type hypersensitivity (DTH) among different exposure sites, we evaluated the sensitization potency of mercuric chloride (HgCl(2)) via exposure to the skin, or oral or esophageal mucosa using the mouse ear swelling test. Furthermore, we investigated in vitro splenocyte proliferation reaction and cytokine profile in HgCl(2)-exposed and control mice. Sensitization with HgCl(2) was established via the skin and oral mucosa but not via the esophageal mucosa. The splenocyte proliferation reaction was significantly enhanced to a similar degree in skin and oral mucosa-sensitized mice compared with in the control mice. IL-10 levels from cultured splenocytes were significantly increased in sk... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4718937 Sat, 16 Apr 2011 06:15:03 +0100 4718937 http://www.medworm.com/index.php?rid=4718936&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21467778%26dopt%3DAbstract Authors: Okoshi R, Ohta K, Ishikawa A, Sato Y, Kizaki H The 5'-AMP-activated protein kinase (AMPK) is a key enzyme in the protection of cells during energy crisis. AMPK is a heterotrimer consisting of a catalytic α (α1, 2) subunit and two regulatory subunits, β (β1, 2) and γ (γ1-3). To elucidate the role of AMPK in thymocytes with starvation, we investigated the expression of AMPK in murine thymocytes. The main isoforms expressed were α2, β1, and γ1, of which expression increased time-dependently with starvation, together with an increase in the amount of the active form of AMPK, phospho-AMPKα. In cultured thymocytes, expression of AMPK was induced by dexamethasone, but not by a low glucose concentration in medium. Increased expression was inhibited by glucocorticoid receptor... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4718936 Sat, 16 Apr 2011 06:15:03 +0100 4718936 http://www.medworm.com/index.php?rid=4718935&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21467779%26dopt%3DAbstract Authors: Sawaki K, Shinomiya T, Okubo M, Tsukagoshi E, Ogane M, Matsuura M, Yoshikawa M, Kawaguchi M We investigated changes in the protein profile of submandibular gland (SMG) with inflammation induced by exposure to lipopolysaccharide (LPS) with the aim of identifying potential molecular markers of injured gland. Lipopolysaccharide (2.5µg) was directly administered into rat SMG unilaterally by retrograde ductal injection. At 12hr after treatment, the gland was excised and the proteins identified by two-dimensional difference gel electrophoresis and matrix-assisted laser desorption/ionization-time of flight mass spectrometry. Many proteins in the LPS-treated gland showed a marked change compared to those in the contralateral gland. Of particular note were increases in ubiquitin, a hi... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4718935 Sat, 16 Apr 2011 06:15:03 +0100 4718935 http://www.medworm.com/index.php?rid=4718934&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21467780%26dopt%3DAbstract This report describes the therapeutic results of a patient with bilateral Brodie bite in early mixed dentition after using a bonded constriction quad-helix appliance. The patient, a boy aged 9 years and 2 months, first visited our hospital after occlusal abnormality in the molar region was detected at a local dental clinic. Case analysis resulted in a diagnosis of bilateral Brodie bite with slight mandibular retrognathism. Treatment objectives were to reduce the arch width of the maxillary dentition and expand the mandibular arch in order to establish and stabilize molar occlusion and to achieve a Class I molar relation and appropriate overbite and overjet. Treatment comprised covering the occlusal surface of the maxillary molars with resin and attaching a bonded constriction quad-helix ap... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4718934 Sat, 16 Apr 2011 06:15:03 +0100 4718934 http://www.medworm.com/index.php?rid=4718933&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21467781%26dopt%3DAbstract Authors: Kasahara M, Ichinohe T, Sano T, Fukuda K, Kaneko Y Varicella-zoster virus reactivation causes zoster (shingles), a syndrome characterized by severe pain and a vesicular rash. The present report details a case of varicella-zoster virus reactivation of the maxillary and mandibular division of the right trigeminal nerve without evidence of vesicular rash (zoster sine herpete). It is difficult to identify owing to no typical clinical signs such as vesicular eruption. Zoster sine herpete of the trigeminal nerve, in particular, is rarely reported. In this case, the diagnosis was based on clinical findings and was supported by the demonstration of an immunoglobulin G antibody. Zoster sine herpete of the trigeminal nerve, in particular, should be considered in patients with severe fac... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4718933 Sat, 16 Apr 2011 06:15:03 +0100 4718933 http://www.medworm.com/index.php?rid=4718932&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21467782%26dopt%3DAbstract Authors: Ito T, Yasuda M, Norizuki Y, Sasaki H, Honma S, Furuya Y, Kato T, Yajima Y Periodontal disease is considered a risk factor in dental implant treatment. The purpose of this study was to investigate the periodontal conditions in patients requesting dental implant therapy. A total of 169 patients visiting Department of Oral and Maxillo-Facial Implantology at Tokyo Dental College Chiba Hospital were targeted. The following intraoral parameters were measured in each patient: Community Periodontal Index (CPI) score, probing pocket depth (PPD), clinical attachment level (CAL) and bleeding on probing (BOP). Prevalence of patients with periodontal pockets was high: 38% and 28% of patients had a CPI score of code 3 and 4, respectively. Prevalence of teeth with one or more sites with PPD... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4718932 Sat, 16 Apr 2011 06:15:03 +0100 4718932 http://www.medworm.com/index.php?rid=4258442&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21139370%26dopt%3DAbstract Authors: Hirai K, Tomida M, Kikuchi Y, Ueda O, Ando H, Asanuma N A complex aggregation of microorganisms growing on a solid substrate is termed a biofilm and is considered to be an etiological agents. Pseudomonas aeruginosa and Streptococcus mutans are representative bacteria in such biofilms. It is well known that deuterium oxide (D(2)O) causes toxic effects on a number of biological systems. We investigated the effects of D(2)O on growth and biofilm formation of P. aeruginosa and S. mutans. These bacteria were incubated in medium containing D(2)O (100%, 75% or 0%) at 37°C for 24hr, 48hr or 72hr. Growth of P. aeruginosa was inhibited by D(2)O within the first 48hr. However, after 72hr, growth rate was seen to increase in the D(2)O-containing medium compared with in medium without D(2... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4258442 Tue, 14 Dec 2010 22:30:05 +0100 4258442 http://www.medworm.com/index.php?rid=4258441&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21139371%26dopt%3DAbstract In conclusion, laser irradiation at a wavelength of 1.67µm for 30 sec showed a bactericidal effect on S. mutans, suggesting that this wavelength is more useful than 2.94µm due to greater tissue penetration. PMID: 21139371 [PubMed - in process] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4258441 Tue, 14 Dec 2010 22:30:05 +0100 4258441 http://www.medworm.com/index.php?rid=4258439&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21139372%26dopt%3DAbstract Authors: Suyama Y, Takaku S, Okawa Y, Matsukubo T To investigate dental erosion in employees working with sulfuric acid at a lead storage battery manufacturing plant and level of personal exposure to sulfuric ions, we measured sulfuric ion concentrations in the mouth rinse of those employees. We also measured exposure levels from air samples obtained from 2 employees from the same plant who did not work with sulfuric acid using a portable air sampler. At the same time, we collected and compared their mouth rinses with those from other employees. More specifically, we measured and compared sulfuric ion, calcium, and magnesium concentrations, along with pH levels from the mouth rinse of these two groups. Positive correlations were found between sulfuric ion and calcium concentrations (r=... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4258439 Tue, 14 Dec 2010 22:30:05 +0100 4258439 http://www.medworm.com/index.php?rid=4258416&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21139373%26dopt%3DAbstract Authors: Deliberador TM, Santos FR, Bosco AF, Furlaneto FA, Messora MR, Giovanini AF, Nagata MJ The treatment of Miller class III gingival recession is considered a challenge in periodontal practice, and among the different techniques used, autogenous connective tissue graft has shown the most favorable results. In some cases, more than one procedure may be necessary. In this case report, we describe the simultaneous application of a combination of three techniques (the tunnel technique, a connective tissue graft and a laterally positioned flap) to treat a Miller class III gingival recession localized in the lower anterior region. Twelve months after surgical procedures, partial root coverage, favorable esthetic results and a gain in clinical attachment level were observed, with no per... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4258416 Tue, 14 Dec 2010 22:30:05 +0100 4258416 http://www.medworm.com/index.php?rid=4258415&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21139374%26dopt%3DAbstract This report describes a 4-week-old boy in whom an epidermoid cyst developed in the midline region of the soft palate close to the uvula. Decreased suckling ability led to a poor in body weight, so resection was performed at an early age. The histopathological diagnosis was epidermoid cyst. PMID: 21139374 [PubMed - in process] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4258415 Tue, 14 Dec 2010 22:30:05 +0100 4258415 http://www.medworm.com/index.php?rid=4258414&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21139375%26dopt%3DAbstract Authors: Kato H, Nakagawa K Core carrier techniques are unique among the various root canal filling techniques for delivering and compacting gutta-percha in the prepared root canal system. Thermafil (TF), considered the major core carrier device, is provided as an obturator consisting of a master core coated with thermoplasticized gutta-percha. We have devised a thermoplasticized gutta-percha filling technique using a polypropylene core, FlexPoint(®) NEO (FP), which was developed as a canal filling material that can be sterilized in an autoclave. Therefore, FP can be coated onto thermoplasticized gutta-percha and inserted into the prepared canal as a core carrier. The FP core carrier technique offers many advantages over the TF system: the core can be tested in the root canal and veri... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4258414 Tue, 14 Dec 2010 22:30:05 +0100 4258414 http://www.medworm.com/index.php?rid=4258413&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21139376%26dopt%3DAbstract Authors: Uchida Y, Endoh T, Shibukawa Y, Tazaki M, Sueishi K The biologically active form of vitamin D, 1α,25-dihydroxy vitamin D(3) (VD), regulates the synthesis of the bone Ca-binding proteins osteocalcin and osteopontin. The actions of VD are mediated through the vitamin D receptor (VDR). Liganded VDR heterodimerizes with the retinoid X receptor and interacts with a vitamin D response element (VDRE). Recently, it has been demonstrated that vitamin D responses elicited in osteoblasts can be rapid as well as long-term. The purpose of this study was to elucidate the mechanism of Ca(2+) signaling of VD in osteoblasts using intracellular Ca(2+) ([Ca(2+)](i)) measurements. A rapid VD (10 nM)-induced increase in [Ca(2+)](i) was observed within 40sec. This increase, however, was negated wi... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4258413 Tue, 14 Dec 2010 22:30:05 +0100 4258413 http://www.medworm.com/index.php?rid=4014484&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20877157%26dopt%3DAbstract Conclusion: when no resin coating-technique was used to protect dentin, lower bond strength values were obtained than those in the other groups. The combination of a "two-step" self-etch adhesive system and low viscosity resin promoted the best bond strength values. PMID: 20877157 [PubMed - in process] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4014484 Thu, 30 Sep 2010 13:15:03 +0100 4014484 http://www.medworm.com/index.php?rid=4014483&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20877158%26dopt%3DAbstract This article reports the development and current status of an e-Learning system (hereafter, referred to as "ELS") at Tokyo Dental College. The ELS was developed to promote self-study. In order to achieve this, all new students were encouraged to use a notebook PC, and an intramural IT environment providing full, wireless LAN Web access was established. One key aspect of the ELS is the inclusion of a series of organically integrated lectures. This system represents a new departure in the development of fully technology-integrated dental education, providing a program which allows the student to select "unified themes" which incorporate those tackled in the standard curriculum as "systematic subjects". Integrated learning is further enhanced, as the system contains "topic spaces" which allow... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4014483 Thu, 30 Sep 2010 13:15:03 +0100 4014483 http://www.medworm.com/index.php?rid=4014482&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20877159%26dopt%3DAbstract Authors: Enokiya Y, Hashimoto S, Muramatsu T, Jung HS, Tazaki M, Inoue T, Abiko Y, Shimono M Mechanical stress such as occlusal and orthodontic loading has been suggested to induce a homeostatic and regenerative response in periodontal ligament (PDL), but the underlying mechanism remains to be clarified. The purpose of this study was to investigate expression of mRNAs encoding proteins involved in osteogenesis and homeostasis by PDL cells following application of tensile stress and characterize the relationship between such expression and the regenerative and homeostatic functions of the PDL. PDL cells were obtained from rats and stretched by 9% or 18% at a frequency of 6 cycles/min for 12 hr to 5 days in a FX-4000T™ culture system. After stretching, expression of mRNAs encod... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4014482 Thu, 30 Sep 2010 13:15:03 +0100 4014482 http://www.medworm.com/index.php?rid=4014481&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20877160%26dopt%3DAbstract Authors: Komiya Ito A, Ishihara K, Tomita S, Kato T, Yamada S Periodontopathic bacteria such as Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, Tannerella forsythia, Campylobacter rectus and Treponema denticola play an important role in the initiation and progression of periodontitis. The aim of this investigation was to evaluate the relationship between periodontal clinical parameters and the subgingival profile of periodontopathic bacteria. Twenty-six periodontitis patients (23-62 years of age; mean age, 40.2±13.2) with no systemic disease agreed to participate in the study. Periodontal clinical parameters, including probing depth (PD) and bleeding on probing (BOP) were recorded. Subgingival plaque samples were obtained from deep (PD≥4 mm) and shallow (PDâ‰... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4014481 Thu, 30 Sep 2010 13:15:03 +0100 4014481 http://www.medworm.com/index.php?rid=4014480&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20877161%26dopt%3DAbstract In this study, we investigated the relationship between its biofilm-forming ability and expression of the flp, rcpA and rcpB genes associated with fimbriae protein production. First, we changed rough type strain organized biofilm on glass into smooth type and confirmed it by observation of biofilm on glass surfaces. Then, we carried out Real-Time PCR and found that expression of the rcpA and rcpB genes was clearly reduced in smooth type colonies. This suggests that expression of rcpA and rcpB plays a key role in biofilm formation by A. actinomycetemcomitans strains and the establishment of persistent infections in periodontal lesions. PMID: 20877161 [PubMed - in process] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4014480 Thu, 30 Sep 2010 13:15:03 +0100 4014480 http://www.medworm.com/index.php?rid=4014479&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20877162%26dopt%3DAbstract Authors: Takaki T, Tamura N, Yamamoto M, Takano N, Shibahara T, Yasumura T, Nishii Y, Sueishi K The aim of this retrospective study was to determine factors that might cause complications in use of temporary anchorage devices (TADs) for orthodontic anchorage. We investigated 904 TADs in 455 patients. Clinical diagnoses requiring orthodontic treatment were malocclusion, jaw deformity, various syndromes, cleft lip and palate and impacted teeth. All patients underwent surgery at Tokyo Dental College Chiba Hospital between November 2000 and June 2009. Three kinds of titanium screw of different diameter and length were used: self-drilling mini-screws (Dual Top Autoscrew(®) and OSAS(®)), pre-drilling micro-screws (K1 system(®)) and palatal screws (PIAS(®)). Mini-plates fixed with... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4014479 Thu, 30 Sep 2010 13:15:03 +0100 4014479 http://www.medworm.com/index.php?rid=4014478&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20877163%26dopt%3DAbstract We report a successfully treated case in which dens evaginatus was difficult to diagnose due to distant radiation of pulpitis-induced pain. This pain occurred as a result of fracture of a tubercle located on the occlusal surface of the maxillary second molar, which is very rare. PMID: 20877163 [PubMed - in process] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=4014478 Thu, 30 Sep 2010 13:15:03 +0100 4014478 http://www.medworm.com/index.php?rid=3842687&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20689235%26dopt%3DAbstract Authors: Fuma A, Motegi E, Fukagawa H, Nomura M, Kano M, Sueishi K, Okano S Few studies have investigated the morphologic characteristics of teeth, dental arches and occlusion in elderly persons with many remaining teeth. The purpose of this study was to establish a method of measurement using 3-D imaging to investigate tooth angulation in the elderly from the orthodontic point of view. The dental casts of 20 elderly persons with many remaining teeth were digitized with a 3-D laser scanner (VMS-100F, UNISN INC., Osaka, Japan) to construct 3-D images. The mesio-distal angulation of each tooth was then measured with analytical software (SURFLACER, UNISN INC. and IMAGEWARE 12, UGS PLM Solutions, MO, USA). The occlusal plane formed by the incisal edge of the central incisor and distal bucc... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=3842687 Mon, 09 Aug 2010 13:18:03 +0100 3842687 http://www.medworm.com/index.php?rid=3842679&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20689236%26dopt%3DAbstract Authors: Ueda T, Takagi I, Ueda-Kodaira Y, Sugiyama T, Hirose N, Ogami K, Mori K, Sakurai K The purpose of this study was to investigate differences between natural tooth color and that selected for artificial teeth in partial dentures at our department with a view to establishing criteria for obtaining greater harmonization between colors. The participants in this study comprised partial denture wearers visiting the Department of Prosthodontics, Tokyo Dental College Chiba Hospital, in whom both artificial teeth and natural teeth were present in the maxillary anterior tooth area. Natural tooth color was measured according to VITA classical shade guide number using a dental color measurement apparatus. Artificial tooth color in partial dentures produced at our department was investigate... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=3842679 Mon, 09 Aug 2010 13:18:03 +0100 3842679 http://www.medworm.com/index.php?rid=3842672&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20689237%26dopt%3DAbstract Authors: Fukagawa H, Motegi E, Fuma A, Nomura M, Kano M, Sueishi K, Okano S Tooth inclination has been discussed many times in terms of esthetics and functionality, but reports related to aging are extremely rare. The purpose of this study was to evaluate tooth inclination in the elderly from the orthodontic point of view. The dental casts of twenty elderly persons with many remaining teeth were digitized with a 3-D laser scanner (VMS-100F,UNISN INC., Osaka, Japan) for reconstruction into 3-D images. Inclination of each tooth was then measured with an analytical software (SURFLACER, UNISN INC. and IMAGEWARE 12, UGS PLM Solutions, MO, USA). The occlusal plane formed by the incisal edge of the central incisor and distal buccal cusp tip of the first molar on either side was used as a refe... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=3842672 Mon, 09 Aug 2010 13:18:03 +0100 3842672 http://www.medworm.com/index.php?rid=3842664&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20689238%26dopt%3DAbstract Authors: Suyama Y, Takaku S, Okawa Y, Matsukubo T Dental erosion, and specifically its symptoms, has long been studied in Japan as an occupational dental disease. However, in recent years, few studies have investigated the development of this disease or labor hygiene management aimed at its prevention. As a result, interest in dental erosion is comparatively low, even among dental professionals. Our investigation at a lead storage battery factory in 1991 found that the work environmental sulfuric acid density was above the tolerable range (1.0mg/m(3)) and that longterm workers had dental erosion. Therefore, workers handling sulfuric acid were given an oral examination and rates of dental erosion by tooth type, rates of erosion by number of working years and rates of erosion by sulfuric... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=3842664 Mon, 09 Aug 2010 13:18:03 +0100 3842664 http://www.medworm.com/index.php?rid=3842662&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20689239%26dopt%3DAbstract Authors: Saito A, Hayakawa H, Ota K, Fujinami K, Nikaido M, Makiishi T The aim of this retrospective clinical study was to evaluate the treatment of intrabony periodontal defects with enamel matrix derivative (EMD) during the early stages of healing. Sixteen patients aged 38-77 years with a clinical diagnosis of chronic periodontitis were subjected to data analysis. A total of 25 teeth with various osseous defects received regenerative therapy with EMD, and were followed for a minimum of 6 months. Post-operative healing was uneventful in the majority of cases. Treatment of the intrabony defects with EMD led to a statistically significant improvement in the mean value of probing depth at 3 months compared with that at baseline (p<0.001). Mean values of attachment gain at 3 and 6 mont... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=3842662 Mon, 09 Aug 2010 13:18:03 +0100 3842662 http://www.medworm.com/index.php?rid=3842661&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20689240%26dopt%3DAbstract Authors: Hisanaga R, Hagita K, Nojima K, Katakura A, Morinaga K, Ichinohe T, Konomi R, Takahashi T, Takano N, Inoue T The occurrence of accidental ingestion/aspiration and preventive measures were investigated at Tokyo Dental College Chiba Hospital. In addition, the characteristics of accidents at our hospital were analyzed by surveying the awareness of accidental ingestion/aspiration to utilize the data for prevention. Accidental ingestion accounted for about 30% of accidents that occurred at our hospital in fiscal 2008, but all ingested items were naturally excreted, and no accidental aspiration occurred. Accidental ingestion most frequently occurred when dental restorations were removed. Inlays and crowns were most frequently ingested, and dentists with 5 to less than 10 years of cl... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=3842661 Mon, 09 Aug 2010 13:18:03 +0100 3842661 http://www.medworm.com/index.php?rid=3842659&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20689241%26dopt%3DAbstract Authors: Yamakura D, Tsunoda M, Takahashi T, Sugiyama T, Kondo Y, Noro A, Kameyama A, Ichinohe T, Ishii T Since clinical dental training became mandatory in April 2006, Tokyo Dental College Chiba Hospital has been offering the following two types of training system: 1. a single system, and 2. a clinical training facilities group system. The clinical training facilities group system consists of program B, in which residents are trained in a cooperation-type clinical training facility for 3-4 months, and program C, in which residents are trained in two cooperation-type clinical training facilities for 7-8 months. A matching system within the clinical training facilities group is applied to select and decide on the cooperation-type clinical training facility for residents. In this system,... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=3842659 Mon, 09 Aug 2010 13:18:03 +0100 3842659 http://www.medworm.com/index.php?rid=3695989&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20574128%26dopt%3DAbstract Authors: Agematsu H, Someda H, Hashimoto M, Matsunaga S, Abe S, Kim HJ, Koyama T, Naito H, Ishida R, Ide Y We investigated three-dimensional decrease in the volume of the pulp chamber caused by age-related secondary dentin formation using micro-CT and evaluated the applicability of the results to evaluation of age taking into account sex, age and tooth type. Decrease was slightly higher in females than in males, and a higher correlation between decrease and aging was observed in females. A comparison between age-groups revealed that decrease progressed between the fifties and sixties in males, and the forties and fifties in females. A stronger correlation between aging and decrease was observed in the mandibular central incisors than in the mandibular second premolars. This correlation... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=3695989 Fri, 25 Jun 2010 12:36:03 +0100 3695989 http://www.medworm.com/index.php?rid=3695988&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20574129%26dopt%3DAbstract In this study, the corrosion resistance of Ag-Au-Cu-Pd system alloys consisting of 5 or 10 mass% indium was evaluated. Levels of element release and tarnish were determined and electrochemical measurements performed. Results were compared with those for commercial silver-palladium-gold alloy. In terms of electrochemical behavior, the transpassive potential of these experimental alloys was 168-248mV. Experimental alloys with 25 mass% Au showed similar corrosion resistance to control gold-silver-palladium alloy. Amount of released elements was 14-130mug/cm(2) at 7 days, which is in the allowable range for dental alloys. Addition of indium to Ag-Au-Cu-10mass%Pd system alloys was effective in increasing resistance to tarnish and alloys containing 10 mass% of indium showed a minimal decrease in... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=3695988 Fri, 25 Jun 2010 12:36:03 +0100 3695988 http://www.medworm.com/index.php?rid=3695987&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20574130%26dopt%3DAbstract In this study, a higher ADL, visiting the same dentist and cleaning teeth/dentures three or more times per day were associated with having regular dental check-ups in the elderly. The best predictive factor for regular dental check-ups was a high ADL in the elderly. PMID: 20574130 [PubMed - in process] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=3695987 Fri, 25 Jun 2010 12:36:03 +0100 3695987 http://www.medworm.com/index.php?rid=3695986&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20574131%26dopt%3DAbstract Authors: Sugihara N, Maki Y, Okawa Y, Hosaka M, Matsukubo T, Takaesu Y The purpose of this study was to determine the risk factors for root surface caries in the elderly and to evaluate the factors associated with gingival recession, one of the main risk factors for root surface caries. A total of 153 elderly people (35 men, 118 women) aged between 60 and 94 years (73.5+/-7.5 years) were surveyed. All participants were relatively healthy elderly who did not need special care in their daily lives. The survey was conducted in Chiba prefecture, Japan, and oral examinations and a questionnaire with face-to-face interviews were also carried out. Correlation analysis revealed that number of present teeth (p<0.001), gingival recession (p<0.001), bleeding on probing (p<0.001) and pres... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=3695986 Fri, 25 Jun 2010 12:36:03 +0100 3695986 http://www.medworm.com/index.php?rid=3695985&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20574132%26dopt%3DAbstract We report the case of a 5-year-old girl with congenital fistula of the upper lip. PMID: 20574132 [PubMed - in process] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=3695985 Fri, 25 Jun 2010 12:36:03 +0100 3695985 http://www.medworm.com/index.php?rid=3695984&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20574133%26dopt%3DAbstract We report a case of T3N2bM0 carcinoma of the maxillary gingival which was surgically resected with the assistance of the Stryker Navigation Cart System. This system was found to be useful in assisting preoperative planning and intraoperative monitoring. PMID: 20574133 [PubMed - in process] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=3695984 Fri, 25 Jun 2010 12:36:03 +0100 3695984 http://www.medworm.com/index.php?rid=2970590&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19887753%26dopt%3DAbstract Authors: Lopes MB, Consani S, Gonini-Júnior A, Moura SK, McCabe JF Microleakage in human and bovine teeth was compared. Cavities were prepared on the buccal surface in 20 human and 20 bovine teeth (3 mm x 2 mm in depth). The teeth were divided into 4 groups (n = 10) according to the substrate and adhesive (CLEARFIL SE Bond-CF or Scotchbond 1-SB1). Resin composite (Wave) was applied in two increments, each cured for 30 sec. Specimens were stored in 100% relative humidity at 37 degrees C for 24 hr and submitted to 1,000 thermal cycles, followed by immersion in 0.6% aqueous rhodamine for 48 hr. Specimens were rinsed and sectioned at the center. Microleakage length was measured and the score recorded using the following scale: 0-none, 1-up to enamel junction, 2-up to pulp wall, 3-in p... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2970590 Sat, 01 Aug 2009 00:00:00 +0100 2970590 http://www.medworm.com/index.php?rid=2970589&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19887754%26dopt%3DAbstract Authors: Yamamoto T, Hirayama A, Hosoe N, Furube M, Hirano S Our previous study showed that mice fed on a soft diet after weaning had reduced levels of brain-derived neurotrophic factor (BDNF) protein in the hippocampus after 3 months of age compared with mice fed on a hard diet. BDNF is one of the most effective promoters of neurogenesis in the hippocampus, and enhancement of BDNF production has been shown to enhance neural precursor cell proliferation in the dentate gyrus. We hypothesized that soft-diet feeding during development would reduce the proliferation rate of precursor cells, resulting in lower production of new neurons in the hippocampus. Male C57BL/6 mice pups were fed either a solid (hard-diet group) or powdered (soft-diet group) diet starting at weaning. Three and six mo... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2970589 Sat, 01 Aug 2009 00:00:00 +0100 2970589 http://www.medworm.com/index.php?rid=2970588&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19887755%26dopt%3DAbstract Authors: Watanabe S, Sato K, Okazaki Y, Tonogi M, Tanaka Y, Yamane GY Increasingly, cancers are being diagnosed at an early stage. Leukoplakia, a precancerous lesion, progresses to cancer in 5-10% of cases. We performed genetic analysis using cDNA microarray and immunohistochemistry in 6 patients, 3 with precancerous lesions and 3 with early tongue cancer, to evaluate the usefulness of these methods in the diagnosis of precancerous lesions and early cancer. Samples of normal epithelium, epithelial dysplasia, and cancer tissues were collected by laser microdissection, RNA was extracted, and the signals converted to numerical values. Immunohistochemical analysis was performed using antibody against phospho AKT (p-AKT), a component of the phosphoinositide 3-kinase (PI3K) signal pathway. F... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2970588 Sat, 01 Aug 2009 00:00:00 +0100 2970588 http://www.medworm.com/index.php?rid=2970587&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19887756%26dopt%3DAbstract Authors: Motegi E, Nomura M, Tachiki C, Miyazaki H, Takeuchi F, Takaku S, Abe Y, Miyatani M, Ogai T, Fuma A, Fukagawa H, Kano M, Sueishi K The "8020" goal of retaining 20 or more teeth after the age of 80 necessitates investigating oral health status in people below the age of 80. The purpose of this study was to determine similarities and differences between people in their sixties attending college and achievers of the 8020 goal. The results of oral examination and occlusal force measurement in 46 students enrolled at a college for the elderly in Chiba City with an average age of 66.9 years (22 men, 24 women) were compared with data from previous surveys of fifty-two 8020 achievers (28 men, 24 women). Occlusal force was measured and evaluated using Dental Prescale (Fuji Photo Film Co... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2970587 Sat, 01 Aug 2009 00:00:00 +0100 2970587 http://www.medworm.com/index.php?rid=2970586&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19887757%26dopt%3DAbstract Authors: Motegi E, Takane Y, Tokunaga E, Sueishi K, Takano N, Shibahara T, Saito C This paper describes the post-operative course of care in a patient requiring orthognathic surgery for skeletal mandibular protrusion in whom autotransplantation of a third molar was performed. A lower third molar that had to be removed for sagittal split ramus osteotomy (SSRO) was transplanted to replace the missing right second molar during pre-surgical orthodontic treatment, contributing to post-treatment occlusal stability. A 44-year-old woman presented with mandibular protrusion. The upper left second molar was congenitally missing and the lower right second molar had been extracted. She was diagnosed as having skeletal mandibular protrusion with excess vertical growth of the mandible and anterior o... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2970586 Sat, 01 Aug 2009 00:00:00 +0100 2970586 http://www.medworm.com/index.php?rid=2970585&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19887758%26dopt%3DAbstract Clinical usefulness of "Isolite Plus" for oral environment of Japanese people. Bull Tokyo Dent Coll. 2009 Aug;50(3):149-55 Authors: Noro A, Kameyama A, Asami M, Sugiyama T, Morinaga K, Kondou Y, Tsunoda M The recent demand for dental devices which are easier to handle and offer higher levels of reliability and safety has led to the development in the US of Isolite Plus, a new oral support device. When placed in the oral cavity, Isolite Plus enables marking of the surgical field, secures the treatment space, ensures a vacuum, protects the cheek and tongue, assists in opening the mouth, prevents accidental ingestion/aspiration, ensures treatment without contamination and enhances comfort and safety during dental treatment. The present study was carried out to verify whether Isoli... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2970585 Sat, 01 Aug 2009 00:00:00 +0100 2970585 http://www.medworm.com/index.php?rid=2880068&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19815992%26dopt%3DAbstract This study was carried out to explore the relationship between changes in signal intensity from retrodiscal tissue, joint fluid status and pathological disc conditions in elderly patients with TMD. Twenty patients aged over 60 years were examined. They consisted of one man and 19 women, and ranged between 60 and 79 years in age (mean, 66.0 years). The relationships between decreased signal intensity on proton-density-weighted (PDW) images and increased signal intensity on T2-weighted (T2W) MR images from retrodiscal tissue, joint fluid status and state of articular disc were examined. Joint fluid status was classified into 5 levels by extent of high signal areas in upper and lower articular spaces on T2W images. Disc displacement status was evaluated by PDW images. The Wilcoxon test was ap... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2880068 Thu, 30 Apr 2009 23:00:00 +0100 2880068 http://www.medworm.com/index.php?rid=2880067&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19815993%26dopt%3DAbstract In this study, the number of dental trainees enrolled in each clinical training program and number that had actually received clinical training at each facility were compared by prefecture. The results suggest that disparities in the number of dental trainees among prefectures are being compensated for by movement across prefectural borders under the clinical training facilities-group system. Postgraduate dental trainees, however, showed a significantly greater imbalance in geographic distribution than practicing dentists. Continuation of the postgraduate clinical training for dentists under the existing system may accelerate this imbalance in distribution of dentists. To prevent this, practical measures should be taken in accordance with the coming review of the system, based on research ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2880067 Thu, 30 Apr 2009 23:00:00 +0100 2880067 http://www.medworm.com/index.php?rid=2880066&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19815994%26dopt%3DAbstract This study included 16 patients diagnosed with mandibular protrusion. Alteration of the occlusal plane was achieved by clockwise rotation of the maxilla by Le Fort I osteotomy and mandibular setback was performed by bilateral sagittal split ramus osteotomy. We analyzed and examined lateral cephalometric radiographs taken at 1 month, 3 months, 6 months, and 1 year after surgery. Stability achieved by two methods of mandibular fixation was compared. In one group of patients (group S) titanium screws were used, and in the other group (group P) titanium-locking mini-plates were used. No significant displacement was recognized in group S, whereas an approximately 0.7mm upward vertical displacement was recognized in the anterior nasal spine in group P. As a result, not only the angle of the pala... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2880066 Thu, 30 Apr 2009 23:00:00 +0100 2880066 http://www.medworm.com/index.php?rid=2880065&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19815995%26dopt%3DAbstract In conclusion, there is a positive correlation between tissue blood flow and tissue oxygen tension. Changes in tissue oxygen tension should reflect the increase or decrease in tissue blood flow. PMID: 19815995 [PubMed - in process] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2880065 Thu, 30 Apr 2009 23:00:00 +0100 2880065 http://www.medworm.com/index.php?rid=2880064&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19815996%26dopt%3DAbstract Authors: Garcia AR, Sundfeld RH, de Alexandre RS Here, we present a case report on prosthetic reconstruction of posterior teeth and composite resin restoration of anterior teeth yielding considerable esthetic improvement, reestablishment of disocclusion guides and function. PMID: 19815996 [PubMed - in process] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2880064 Thu, 30 Apr 2009 23:00:00 +0100 2880064 http://www.medworm.com/index.php?rid=2880063&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19815997%26dopt%3DAbstract We report 2 cases of root coverage surgery with a coronally positioned flap in combination with EMD (CPF+EMD) and connective tissue graft in combination with EMD (CTG+EMD). Case 1: The patient was a 25-year-old woman referred to Suidobashi Hospital, Tokyo Dental College for root coverage surgery on the lower right first premolar. Gingival recession was classified as Miller Class II, as no alveolar bone loss or loss of attachment was observed in the interdental area, although recession had progressed to the mucogingival junction. The patient was diagnosed with local gingival recession caused by excessive tooth brushing. Primary conservative treatment failed to reduce the gingival recession. Subsequently, root coverage surgery with CPF+EMD was carried out. As observation at the 1-year follow... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2880063 Thu, 30 Apr 2009 23:00:00 +0100 2880063 http://www.medworm.com/index.php?rid=2630905&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19622874%26dopt%3DAbstract Authors: Takahashi K The purpose of this study was to investigate the effect of new bone substitute materials consisting of collagen and tricalcium phosphate (TCP). Prior to the experiment, mandibular dog teeth were extracted. After 3 months, specific cavities were prepared on the alveolar ridge. In one group, cavities were filled with collagen sponge (CS group), in the other, cavities were filled with TCP sponge (TCP group). Cavities with no fillings (Cont group) were created as controls. Mandibular bone was evaluated histopathologically at experimental time periods of 1, 2, 4, and 8 weeks. Due to the non critical inflammatory symptoms that each group showed throughout all the time periods investigated, a low irritation level was observed. Absorption of material was almost complete at... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2630905 Sun, 01 Feb 2009 00:00:00 +0100 2630905 http://www.medworm.com/index.php?rid=2630904&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19622875%26dopt%3DAbstract Authors: Kameyama A, Oishi T, Sugawara T, Hirai Y This aim of this study was to determine the effect of type of bur and resin-coating material on microtensile bond strength (microTBS) of indirect composite to dentin. Dentin surfaces were first ground with two types of diamond bur and resin-coated using UniFil Bond (UB) or Adper Single Bond (SB), and then bonded to a resin composite disc for indirect restoration with adhesive resin cement. After storage for 24 hr in distilled water at 37 degrees C, microTBS was measured (crosshead speed 1 mm/min). When UB was applied to dentin prepared using the regular-grit diamond bur, microTBS was significantly lower than that in dentin prepared using the superfine-grit bur. In contrast, no significant difference was found between regular-grit and su... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2630904 Sun, 01 Feb 2009 00:00:00 +0100 2630904 http://www.medworm.com/index.php?rid=2630903&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19622876%26dopt%3DAbstract In this study, therefore, we investigated amyloid formation in A. actinomycetemcomitans using a detection of CR-binding colonies on CR agar plates and CR-binding assay. All rough-phenotype strains formed dark red colonies and smooth-phenotype strains formed white or opaque red colonies on CR agar plates. Compared with smooth-phenotype strains, rough-phenotype strains showed higher CR-binding activity. CR-binding of rough-phenotype strain AKR was not affected by protease digestion or heating, whereas smooth-phenotype strain 29523 showed a marked reduction in CR-binding after both types of treatment. AKR showed amyloid-positive staining with CR to produce yellow green birefringence under polarized light, whereas 29523 showed amyloid-negative staining. These findings indicate that the CR-bind... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2630903 Sun, 01 Feb 2009 00:00:00 +0100 2630903 http://www.medworm.com/index.php?rid=2630902&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19622877%26dopt%3DAbstract This report describes a case of orthokeratinized odontogenic cyst arising in the mandibular molar region of a 39-year-old man. Under the initial clinical diagnosis of radicular cyst, root canal treatment was performed on the mandibular right second molar. The treatment that continued for six months did not achieve healing. Subsequently surgical intervention was selected since the tooth fracture was found, and the prognosis was judged to be poor. After atraumatic tooth extraction, the apical cystic lesion was enucleated, and the tooth was replanted. A definite diagnosis of orthokeratinized odontogenic cyst was made by histopathological examination of the biopsy specimen. The radiograph taken seven months after the operation showed an improvement in the radiolucent lesion. No clinical signs ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2630902 Sun, 01 Feb 2009 00:00:00 +0100 2630902 http://www.medworm.com/index.php?rid=2630901&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19622878%26dopt%3DAbstract We report a patient with vertical fracture of the mandibular condyle visualized by computed tomography (CT). A 43-year-old woman visited our department the day after the injury occurred. At the initial examination, she experienced pain in the left temporomandibular joint (TMJ) when opening her mouth. Maximum mouth opening distance was 15 mm. Routine radiography showed normal findings, but CT revealed vertical fracture of the left mandibular condyle. Based on clinical findings, conservative therapy consisting of intra-articular pumping therapy and training for mouth opening was initiated. After 10 days, mouth opening distance increased to 36 mm, and pain in the left TMJ disappeared. PMID: 19622878 [PubMed - in process] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2630901 Sun, 01 Feb 2009 00:00:00 +0100 2630901 http://www.medworm.com/index.php?rid=2630900&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19622879%26dopt%3DAbstract Authors: Kasahara K, Yajima Y, Ikeda C, Kamiyama I, Takaki T, Kakizawa T, Shibahara T Symptoms of Systemic Inflammatory Response Syndrome (SIRS) presenting immediately after surgery have lately been regarded as potential warnings of impending postoperative complications and multiple organ failure. Reports discussing the relationship between operative stress and SIRS are found in the field of digestive surgery, but not in that of oral surgery. Sixty-five patients with jaw deformity who had undergone maxillary and mandibular orthognathic surgery (Le Fort I osteotomy and sagittal splitting ramus osteotomy) between September 2003 and October 2006 were involved in this study. A search based on the SIRS diagnostic criteria resulted in assignment of 33 cases to the SIRS group and 32 cases to ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2630900 Sun, 01 Feb 2009 00:00:00 +0100 2630900 http://www.medworm.com/index.php?rid=2530648&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19420877%26dopt%3DAbstract Authors: Guiraldo RD, Consani S, Mastrofrancisco S, Consani RL, Sinhoreti MA, Correr-Sobrinho L The aim of this study was to determine the effect of different ceramic thickness on heat generation during resin cement photo-activation by QTH (quartz-tungsten-halogen), LED (light emitting diode), and PAC (plasma arc-curing) LCUs (light curing units). The resin cement used was Rely X ARC (3M-ESPE), and the ceramic was IPS Empress Esthetic (Ivoclar-Vivadent), of which 0.7-, 1.4- and 2.0-mm thick disks, 0.8 mm in diameter were made. Temperature increase was recorded with a type-K thermocouple connected to a digital thermometer (Iopetherm 46). An acrylic resin base was built to guide the thermocouple and support the 1.0-mm thick dentin disk. A 0.1-mm thick black adhesive paper matrix with a p... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2530648 Sat, 01 Nov 2008 00:00:00 +0100 2530648 http://www.medworm.com/index.php?rid=2530646&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19420878%26dopt%3DAbstract In this study, we investigated the effect of stimulating cultured myoblasts with centrifugal force at different speeds on cell proliferation and myosin heavy-chain (MyHC) mRNA expression in muscle fiber. Stimulation of myoblasts was carried out at 2 different speeds for 20 min using the Himac CT6D, a desk centrifuge, and cells were observed at 1, 3 and 5 days later. Number of cells 1 and 5 days after centrifugal stimulation was significantly larger in the 62.5 x g and 4,170 x g stimulation groups than in the control group. Expression of MyHC-2b mRNA 1 day after centrifugal stimulation was significantly higher in the 2 stimulation groups than in the control group. Almost no expression of MyHC-2a was observed in any group at 1 and 3 days after centrifugal stimulation. However, 5 days after s... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2530646 Sat, 01 Nov 2008 00:00:00 +0100 2530646 http://www.medworm.com/index.php?rid=2530644&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19420879%26dopt%3DAbstract Authors: Yamamoto T, Hirayama A, Hosoe N, Furube M, Hirano S Our previous study showed that mice fed a soft diet after weaning had reduced synaptic connections in the hippocampal formation and impaired spatial learning ability after 3 months of age. We hypothesized that soft-diet feeding during development reduced levels of brain-derived neurotrophic factor (BDNF) protein in the hippocampus, resulting in lower synaptic densities in this region. Male pups of C57BL/6 mice were fed either a solid (hard-diet group) or powdered diet (soft-diet group), starting at weaning. Expression of BDNF protein in the hippocampus and cerebral cortex was evaluated quantitatively with enzyme-linked immunosorbent assay (ELISA) at 1, 3 and 6 months of age. Reduction in BDNF protein levels due to soft diet w... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2530644 Sat, 01 Nov 2008 00:00:00 +0100 2530644 http://www.medworm.com/index.php?rid=2530642&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19420880%26dopt%3DAbstract Authors: Miyazaki H, Sueishi K, Takano M, Kakizawa T A patient who visited our department after job relocation was reexamined, and a marked discrepancy was found in mandibular position between centric occlusion and centric relation. Although the patient was originally scheduled to undergo orthodontic treatment only, the results of comprehensive tests indicated that surgery would be needed to resolve this discrepancy. Surgery was performed with the patient's consent, yielding favorable results. Although the entire orthodontic treatment lasted 3 years and 11 months, including treatment prior to transfer, it was clear that long-term use of intermaxillary elastics would not have corrected the discrepancy and that surgery was the right decision. PMID: 19420880 [PubMed - indexed for MEDL... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2530642 Sat, 01 Nov 2008 00:00:00 +0100 2530642 http://www.medworm.com/index.php?rid=2530640&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19420881%26dopt%3DAbstract Authors: Carrard VC, Pires AS, Badauy CM, Rados PV, Lauxen IS, Sant'Ana Filho M The aim of this study was to investigate cell proliferation rate and certain morphological features of mouse epithelium as aging progresses. Tongue biopsies were performed on female mice (Mus domesticus domesticus) at 2, 8, 14 and 20 months of age as indicative of adolescence, adulthood, early senescence and senescence, respectively. Histological sections of tongue were stained with hematoxylin-eosin and subjected to silver staining for active nucleolar organizer region counting. Cell proliferation rate and epithelial thickness analysis were carried out. Analysis of variance detected no differences between the groups in terms of numbers of silver-stained dots associated with nucleolar proteins. There was an... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2530640 Sat, 01 Nov 2008 00:00:00 +0100 2530640 http://www.medworm.com/index.php?rid=2090713&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19129684%26dopt%3DAbstract Authors: Fukuda CT, Carneiro SR, Alves VT, Pustiglioni FE, De Micheli G The aim of the present cross-sectional investigation was to evaluate percentage of bone loss in patients who had been one year under periodontal maintenance at the Department of Periodontology, Faculty of Dentistry, University of São Paulo by radiographic analysis. Complete sets of periapical radiographs provided data regarding percentage of alveolar bone loss, which was correlated with arches, tooth group and proximal sites. The sample consisted of 27 men and 53 women ranging in age from 16 to 85 years (mean: 48.3 years). A total of 1,120 periapical radiographs (1,970 teeth) were digitized and analyzed with the Image Tool software (University of Texas Health Science Center). Bone loss was defined as when the ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2090713 Fri, 01 Aug 2008 04:00:00 +0100 2090713 http://www.medworm.com/index.php?rid=2090712&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19129685%26dopt%3DAbstract Authors: Yamanaka-Okada A, Sato E, Kouchi T, Kimizuka R, Kato T, Okuda K The purpose of this study was to investigate the effect of cranberry polyphenol fraction on mutans streptococci. Hydrophobicity is an important factor in the adherence of bacteria to the tooth surface. We found that cranberry polyphenol fraction significantly decreased the hydrophobicity of Streptococcus sobrinus 6715, Streptococcus mutans MT8148R and JC2 in a dose-dependent manner (p<0.05). Biofilm formation by S. sobrinus 6715 and S. mutans MT8148R was inhibited by 100 microg/ml cranberry polyphenol fraction (p<0.01). When dosage was increased to 500 microg/ml, biofilm formation by S. mutans JC2 was significantly inhibited (p<0.05). Addition of 500 microg/ml cranberry polyphenol fraction to medium inhib... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2090712 Fri, 01 Aug 2008 04:00:00 +0100 2090712 http://www.medworm.com/index.php?rid=2090711&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19129686%26dopt%3DAbstract Authors: Ohkubo M, Sano T, Ishida R, Higaki T, Nishikawa K, Hayakawa Y, Otonari T, Yamamoto-Otonari M, Harada T, Wakoh M Evaluation of swallowing has been made possible by cine-Magnetic resonance (MR) imaging with high time resolution. However, the spatial resolution in cine-MR imaging remains inadequate for the detection of anatomical structures. Therefore, it is necessary to refer to static MR images in conjunction with cine-MR imaging. The aim of this study was to determine which MR parameters were appropriate for static imaging of the anatomical structures involved in swallowing. MR imaging was carried out, and T1-weighted, T2-weighted and proton-density-weighted MR images were obtained in the sagittal plane in 5 healthy volunteers. Each image was evaluated for anatomic landmark cl... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2090711 Fri, 01 Aug 2008 04:00:00 +0100 2090711 http://www.medworm.com/index.php?rid=2090710&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19129687%26dopt%3DAbstract The objective of this in vitro study was to evaluate demineralization around restorations. Class V preparations were made on the buccal and lingual surfaces of each tooth. TPH (Group 1), Fuji II LC (Group 2), Tetric (Group 3), Dyract (Group 4), GS 80 (Group 5) and Chelon Fil (Group 6) were randomly placed in equal numbers of teeth. The teeth were submitted to a pH-cycling model associated with a thermocycling model. Sections were made and the specimens were examined for the presence of demineralization under polarized light microscopy. Demineralization was significantly reduced with Chelon Fil (Group 6). Furthermore, a similar inhibitory effect on the development of demineralization was observed in Groups 2, 4 and 5. PMID: 19129687 [PubMed - in process] (Source: The Bulletin of Tokyo D... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=2090710 Fri, 01 Aug 2008 04:00:00 +0100 2090710 http://www.medworm.com/index.php?rid=1776476&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18776716%26dopt%3DAbstract This study revealed that muscles with different roles function comprehensively during complicated masticatory movement. PMID: 18776716 [PubMed - in process] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1776476 Thu, 01 May 2008 04:00:00 +0100 1776476 http://www.medworm.com/index.php?rid=1776475&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18776717%26dopt%3DAbstract Authors: Yonezu T, Yakushiji M The purpose of the present study was to investigate the relationship between infant sucking habits and the prevalence of caries in Japanese preschool children.The study was designed as a prospective, longitudinal study starting with 592 children aged 18 months. Information on sucking habits and patterns of feeding was collected from parents in the form of a questionnaire. Children who continued breastor bottle-feeding at 18 months of age were eliminated prior to the evaluations. The children were divided into 3 groups according to their sucking habits at 18 months of age: Group 1: children with a finger-sucking habit (n=151); Group 2: children who used a pacifier (n=45) and Group 3: children with no oral habit (n=205). Clinical examinations were carried o... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1776475 Thu, 01 May 2008 04:00:00 +0100 1776475 http://www.medworm.com/index.php?rid=1776474&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18776718%26dopt%3DAbstract In this study, to clarify the influence of the maxillo-mandibular bones and cranium on airway morphology, maxillo-facial morphology in patients with jaw deformation was measured using cephalograms and X-ray CT imaging data. Subjects consisted of 25 adult women in whom cephalograms and X-ray CT were taken to diagnose jaw deformation. The data obtained were classified based on skeletal and facial patterns according to Ricketts analysis, and changes in internal diameter, height and volume of the middle pharyngeal airway were observed. The results showed that the internal diameter of the inferior airway expanded anteriorly when the mandibular bone was in the anterior position, and was slightly constricted and elongated vertically when the mandibular bone was posteriorly rotated. This suggests ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1776474 Thu, 01 May 2008 04:00:00 +0100 1776474 http://www.medworm.com/index.php?rid=1776473&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18776719%26dopt%3DAbstract Authors: Nakamoto D, Yamamoto N, Takagi R, Katakura A, Mizoe JE, Shibahara T Malignant mucosal melanoma (MMM) still has the poorest prognosis. There is a paucity of molecular biological studies on MMM of the head and neck. We investigated free-circulating DNA microsatellites with loss of heterozygosity (LOH) in the blood of MMM patients. Cancer-related DNA is found in plasma, with cancer patients showing a higher level of free-circulating DNA than normal subjects. However, it is difficult to obtain sufficient amounts of such DNA for PCR analysis. We have searched for ways to improve all stages of such research, and detected new microsatellite alterations by triplicated whole genome amplification (WGA) and triplicated PCR amplification. In order to achieve a better understanding of the ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1776473 Thu, 01 May 2008 04:00:00 +0100 1776473 http://www.medworm.com/index.php?rid=1776472&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18776720%26dopt%3DAbstract In conclusion, EMD treatment of intrabony osseous defects yielded clinically favorable responses. The gain in clinical attachment can be longitudinally maintained in a private practice setting. Further controlled studies are needed to elucidate the clinical significance of EMD treatment. PMID: 18776720 [PubMed - in process] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1776472 Thu, 01 May 2008 04:00:00 +0100 1776472 http://www.medworm.com/index.php?rid=1599519&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18580045%26dopt%3DAbstract Authors: Abe S, Kawada E The validity of objective structured clinical examination (OSCE) in evaluating clinical skills has been confirmed in a number of studies. However, inter-examiner reliability has been noted as a concern by many educators. To minimize discrepancy between examiners, in application of the OSCE, we have developed an OSCE attitude and skill test re-examination system. Student performance was digitally, filmed and stored as electronic files. When results showed inter-examiner discrepancy, those items were automatically extracted in the form of a re-examination sheet to allow student re-evaluation by a third examiner in reference to the relevant film files. This system facilitates feedback to each examiner and examinee, offering a potentially useful tool for attitude a... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599519 Fri, 01 Feb 2008 05:00:00 +0100 1599519 http://www.medworm.com/index.php?rid=1599518&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18580046%26dopt%3DAbstract Authors: Yamashita H, Yotsuya K, Takeuchi T, Oda S, Hara A, Sekiguchi H, Yakushiji M We conducted a survey on the awareness of abnormalities of dentition and occlusion in 1,904 children (0-15 years old) and their guardians (parents, grandmothers, grandfathers and siblings) on their initial visit to the Department of Pediatric Dentistry, Chiba Hospital, Tokyo Dental College. The location and type of abnormality for which the children and their guardians most commonly sought treatment were crowding of the upper and lower anterior teeth and inverted occlusion. The most common initial triggers for concern were "guardians noticed abnormalities themselves". It seems logical that where malocclusions that children and guardians can easily notice for themselves are present, they are likely to m... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599518 Fri, 01 Feb 2008 05:00:00 +0100 1599518 http://www.medworm.com/index.php?rid=1599517&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18580047%26dopt%3DAbstract Authors: Tahara R, Motegi E, Nomura M, Tsuchiya Y, Shino T, Inoue E, Sueishi K, Matsuda I The hypothesis of this research was that elderly people with many remaining teeth and good occlusion (8020 achievers) would be able to maintain proper head and body posture, despite aging. The purpose of this study, as a first stage, was to clarify the aging phenomenon of cervical curvature in 8020 achievers in comparison with that in young adults. Subjects consisted of twenty-eight 8020 achievers, with a mean age of 82.96+/-3.3 years and 26.5+/-4.0 teeth. For comparison, forty adults in their 20's with a mean age of 22.9+/-0.7 years and 28.2+/-0.6 teeth were also enrolled. The cervical vertebra was assessed based on the distance from the CV line (tangential line of the 2nd and 6th cervical verteb... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599517 Fri, 01 Feb 2008 05:00:00 +0100 1599517 http://www.medworm.com/index.php?rid=1599516&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18580048%26dopt%3DAbstract Authors: Takahashi T, Sato T, Hisanaga R, Miho O, Suzuki Y, Tsunoda M, Nakagawa K We used porous sapphire dental implants made of alumina clinically for 4 years 1 month, commencing September, 1984 until September, 1988. Subjects consisted of 18 men and 42 women 20-71 years old (mean age: 35 years). Sixty-five implants were inserted in 60 patients. Of these, 20 were clinical cases of an implant connected with natural teeth and 45 were free-standing cases. We conducted a follow-up study on these patients over a 23-year period. One implant in 1 patient had to be removed because of postoperative infection and 8 implants in 7 patients had to be removed because of fracturing or detachment of the porous-part. This paper reports 3 cases where implants remained in place for 21-23 years. These c... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599516 Fri, 01 Feb 2008 05:00:00 +0100 1599516 http://www.medworm.com/index.php?rid=1599515&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18580049%26dopt%3DAbstract We report the training curriculum of this course. PMID: 18580049 [PubMed - in process] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599515 Fri, 01 Feb 2008 05:00:00 +0100 1599515 http://www.medworm.com/index.php?rid=1599514&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18580050%26dopt%3DAbstract Authors: Sakamoto T, Sueishi K, Miyazaki H, Katada H, Ebihara T, Kosaka T Since the fee for orthodontic treatment of malocclusion caused by cleft lip and palate (CLP) became covered by national health insurance in 1982, orthodontic treatment from school age has become the norm. However, in some CLP patients, orthodontic treatment is commenced in adulthood. A number of studies have reported on orthodontic treatment in adult CLP patients. The purpose of this study was to clarify the number and age of new patients, chief complaint, referral status, cleft type, malocclusion, history of orthodontic treatment, and acceptance and planning of orthodontic treatment. The study investigated new CLP patients aged over 18 years who visited the Department of Orthodontics, Suidobashi Hospital of Toky... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599514 Fri, 01 Feb 2008 05:00:00 +0100 1599514 http://www.medworm.com/index.php?rid=1599513&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18580051%26dopt%3DAbstract This study was conducted in 533 children with 1,634 treated teeth who visited the Pediatric Dentistry Department at the Chiba Hospital of Tokyo Dental College between January and December, 2003. Restorations on deciduous tooth were categorized by age of patient and tooth type. The following observations were made: Children aged 4 (17.9%) visited the clinic most frequently and this group had the highest number of deciduous restorations (21.3%). Among the 1,634 deciduous teeth restored, metal inlays were provided in 29.4% of total teeth restored, composite resin restorations in 27.2%, stainless-steel crowns in 25.7%, composite resin full crowns in 7.7%, glass-ionomer cement restorations in 6.6%, and amalgam restorations in 3.4%. By age, composite resin was most frequently used in children ag... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599513 Fri, 01 Feb 2008 05:00:00 +0100 1599513 http://www.medworm.com/index.php?rid=1599526&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18360101%26dopt%3DAbstract Authors: Suzuki T In the soft palate, tongue, pharynx and larynx surrounding the oral region, taste buds are present, allowing the sensation of taste. On the tongue surface, 3 kinds of papillae are present: fungiform, foliate, and circumvallate. Approximately 5,000 taste buds cover the surface of the human tongue, with about 30% fungiform, 30% foliate and 40% circumvallate papillae. Each taste bud comprises 4 kinds of cells, namely high dark (type I), low light (type II), and intermediate (type III) cells in electron density and Merkel-like taste basal cells (type IV) located at a distance from taste pores. Type II cells sense taste stimuli and type III cells transmit taste signals to sensory afferent nerve fibers. However, type I and type IV cells are not considered to possess obvious... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599526 Thu, 01 Nov 2007 04:00:00 +0100 1599526 http://www.medworm.com/index.php?rid=1599525&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18360102%26dopt%3DAbstract Authors: Hanaue K, Katakura A, Kasahara K, Kamiyama I, Takaki T, Shibahara T, Abe S, Ide Y We performed sagittal splitting osteotomy using fresh, unfixed cadavers. Observation was carried out macroscopically and with light microscopy and 3-dimensionally reconstructed images. The aim of this study was to clarify the relationship between the fracture line and the Haversian canal and Haversian lamellae. Macroscopic observation revealed that the fracture line run through the mandibular angle from the inferior rim of the mandibular ramus towards the posterior rim, passing almost through the center of the ridgeline. Histological observation showed that the fracture line tended to run along the curve of the lamellar structure. The incidence of the fracture line running along the lamellar stru... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599525 Thu, 01 Nov 2007 04:00:00 +0100 1599525 http://www.medworm.com/index.php?rid=1599524&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18360103%26dopt%3DAbstract The objective of the present study was to investigate frontal morphological asymmetry in the mandibular molar region in terms of tooth axis and skeletal structures using vertical MPR sections in jaw deformity accompanied by facial asymmetry. Subjects consisted of 15 patients with jaw deformity accompanied by facial asymmetry aged 17.4 years to 37.8 years. There were four men and eleven women. Based on X-ray computed tomography (CT) scans, DICOM viewer software was used to prepare multiplanar reconstruction (MPR) sections. The mandible was then positioned on a reference plane based on the menton and left and right gonions, and a vertical MPR section passing through the mesial root of the first mandibular molar was prepared. The following measurements were made on both the shifted and non-sh... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599524 Thu, 01 Nov 2007 04:00:00 +0100 1599524 http://www.medworm.com/index.php?rid=1599523&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18360104%26dopt%3DAbstract Authors: Yamamoto N, Ikeda C, Yakushiji T, Nomura T, Katakura A, Shibahara T, Mizoe JE The effects of X-ray and carbon ion irradiation on DNA and genes in head and neck carcinoma cells were examined. Four head and neck cancer cell lines (squamous cell carcinoma, salivary gland cancer, malignant melanoma, normal keratinocyte) were treated with 1, 4, and 7 GyE of carbon ion, or 1, 4, and 8 Gy of X-ray, respectively. DNA and RNA in the treated cells were extracted and purified. PCR-LOH (polymerase chain reaction-loss of heterozygosity) analysis with 6 microsatellite regions on chromosome 17 was performed to determine DNA structural damage, and then microarray analysis was performed to reveal changes in gene expression. PCR-LOH analysis detected high LOH in cells treated by radiation, indi... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599523 Thu, 01 Nov 2007 04:00:00 +0100 1599523 http://www.medworm.com/index.php?rid=1599522&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18360105%26dopt%3DAbstract Authors: Ikeda C, Katakura A, Yamamoto N, Kamiyama I, Shibahara T, Onoda N, Tamura H We treated two patients requiring nasolabial flap reconstruction. The first patient was a 75-year-old man with mucoepidermoid carcinoma in the left-side floor of the mouth; requiring resection of the floor of the mouth, partial mandibulectomy, and left supraomohyoid neck dissection. The second patient was a 74-year-old man with recurrent acinic cell carcinoma in the anterior oral floor infiltrating as far as the mandible. This patient required wide excision of the anterior part of the oral cavity, including amputation of the mandible. After tumor resection, both cases had a nasolabial flap reconstruction. The postoperative course of both cases was good; neither postoperative flap necrosis nor infection... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599522 Thu, 01 Nov 2007 04:00:00 +0100 1599522 http://www.medworm.com/index.php?rid=1599521&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18360106%26dopt%3DAbstract Authors: Yonezu H, Wakoh M, Otonari T, Sano T, Hashimoto S, Uchiyama T In benign tumors in the mandibular condyle such as osteoma and osteochondroma, symptoms such as pain and limited-mouth-opening are rarely observed. Therefore, these tumors are often detected after the development of changes in occlusion and mandibular midline deviation. We encountered a very rare patient with mandibular condyle osteoma who showed acute pain and markedly limited-mouth-opening. PMID: 18360106 [PubMed - indexed for MEDLINE] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599521 Thu, 01 Nov 2007 04:00:00 +0100 1599521 http://www.medworm.com/index.php?rid=1599520&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18360107%26dopt%3DAbstract Authors: Katakura A, Kamiyama I, Takano N, Shibahara T, Muramatsu T, Ishihara K, Takagi R, Shouno T In order to find informative salivary biomarkers specific to oral cancer we examined expression of 4 kinds of cytokine in saliva. Levels of interleukins (IL-1beta, -6, -8) and osteopontin were measured by ELISA using whole saliva samples collected from 19 patients with oral cancer (9 men, 10 women; mean age, 60.9 years) and 20 healthy persons (15 men, 5 women; mean age, 32 years). Expression of the 4 cytokines was higher in patients with oral cancer than in healthy controls. The difference was significant in IL-6, in particular. The results suggest that saliva offers a potential target for a screening test aimed at detection of precancerous lesions. PMID: 18360107 [PubMed - indexed f... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599520 Thu, 01 Nov 2007 04:00:00 +0100 1599520 http://www.medworm.com/index.php?rid=1599531&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18057857%26dopt%3DAbstract Authors: Yamamoto N, Kuroiwa T, Katakura A, Shibahara T, Choudhury C Around the world, 200,000 people a year are affected by oral cancer, and the incidence of this disease is 10 times higher in India than Japan, mainly due to the custom of chewing tobacco. Loss of heterozygosity (LOH) on the long arm of chromosome 2 (2q), the short arm of chromosome 3 (3p) and the long arm of chromosome 21 (21q) are observed in several human cancers. We identified novel tumor suppressor loci on these regions in primary oral squamous cell carcinomas (OSCCs) in Japanese. However, there has been no detailed analysis of LOH on these chromosomes in Indians. In the present study, we investigated LOH at 2q, 3p and 21q using 9 microsatellite markers in 26 Indian OSCCs. LOH was detected in 25 (96.2%) out of 26 ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599531 Wed, 01 Aug 2007 04:00:00 +0100 1599531 http://www.medworm.com/index.php?rid=1599530&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18057858%26dopt%3DAbstract We examined the relationship between fluoride uptake into the surface layer (4-6 microm)of enamel and the active fluoride concentration in vitro and the relationship between the amount of fluoride dentifrice (1,000 ppmF) used and the fluoride concentration in oral fluid in vivo. It became clear that fluoride uptake into the enamel was increased at the concentrations of 300 ppmF or more. Fluoride uptake at 300 ppmF was increased for 2 min and became saturated thereafter. The results of the relationship between the fluoride concentration in the oral fluid and the amount of fluoride dentifrice used indicated that the amount of dentifrice that could maintain the mean fluoride concentration at 300 ppm or more for 2 min was 1.0 g or more. From these results, the recommended amount of fluoride de... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599530 Wed, 01 Aug 2007 04:00:00 +0100 1599530 http://www.medworm.com/index.php?rid=1599529&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18057859%26dopt%3DAbstract Authors: Yoshino M, Kato Y, Kizu Y, Tonogi M, Abe S, Ide Y, Yamane GY The purpose of this study was to analyze changes in the internal structure of zygomatic bone using a micro-finite element analysis model (muFEA) and compare angular orientation of trabeculae against compressive force in edentulous and dentulous jaws. Twenty zygomatic bones from dentulous jaws and 20 zygomatic bones from edentulous jaws harvested from Japanese male cadavers were used. From 2-dimensional slice images, we reconstructed 3-dimensional (3D) structure by the volume rendering method using micro-computed tomography (micro-CT). To analyze mechanical properties, all voxels were converted to muFEA models. The angle between the strongest direction of trabecular bone and the axial loading direction (angle alpha) w... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599529 Wed, 01 Aug 2007 04:00:00 +0100 1599529 http://www.medworm.com/index.php?rid=1599528&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18057860%26dopt%3DAbstract Authors: Mochizuki K, Tsujino K, Ohtawa Y, Yakushiji M, Nomura K, Ichinohe T, Kaneko Y Recently, local administration bureaus have established a number of dental clinics and centers for the physically or mentally challenged (PMC) in collaboration with local dental associations. The aim of this study was to investigate dental treatment and general supportive care for the PMC in dental clinics in Tokyo. A dental clinic for the PMC located in northwestern Tokyo in a district with a population of about 680,000 was selected for the study. The variables studied based on dental records included total number of patients, type of disability, medical history, systemic condition, age, treatment regimen and type of general supportive care. The largest group of new patients was under 9 years of age... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599528 Wed, 01 Aug 2007 04:00:00 +0100 1599528 http://www.medworm.com/index.php?rid=1599527&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18057861%26dopt%3DAbstract In conclusion, the data revealed that PDL cells varied with age, and suggest that in view of such changes in cell proliferation and VEGF mRNA expression, age should be taken into consideration in periodontal treatment. PMID: 18057861 [PubMed - indexed for MEDLINE] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599527 Wed, 01 Aug 2007 04:00:00 +0100 1599527 http://www.medworm.com/index.php?rid=1599536&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17978545%26dopt%3DAbstract Authors: Takakura K, Takaki S, Takeda I, Hanaue N, Kizu Y, Tonogi M, Yamane GY The aim of this study was to clarify the effects of the muscarinic receptor agonist, cevimeline, on saliva flow and expression of aquaporin5 (AQP5) in submandibular gland after X-ray irradiation. Using a previously established radiation-induced xerostomia model mouse, saliva flow from at 7 days before irradiation to at 28 days after irradiation was investigated in mice that were treated with cevimeline before or after irradiation. Radiation caused a significant decrease in saliva flow compared with nonirradiated salivary glands. Cevimeline post-treatment also caused a significant decrease in saliva flow. In contrast, cevimeline pre-treatment did not significantly decrease saliva flow. Expression of AQP5 fluo... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599536 Tue, 01 May 2007 04:00:00 +0100 1599536 http://www.medworm.com/index.php?rid=1599535&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17978546%26dopt%3DAbstract Authors: Yokota R, Mishiro M, Abe T, Miyake A, Shiina N, Sueishi K, Yamaguchi H Measurement of the pressure applied to the anterior region of the palate and incisor region of the mandible during thumb-sucking was carried out 3 female children. A polyethylene bag embedded with a high-sensitivity small pressure sensor was fixed on the ventral side of the thumb so that the baroreceptor could be interposed between the thumb and palate during thumb-sucking. The children were allowed to perform habitual thumb-sucking, and the resulting pressure signals were detected with a high-response dynamic strainmeter and recorded. Measured peak pressures were about 2-4.5 kgw, with large individual variation, and waveform patterns also varied. Characteristics of thumb-sucking habits and thumb-sucking pr... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599535 Tue, 01 May 2007 04:00:00 +0100 1599535 http://www.medworm.com/index.php?rid=1599534&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17978547%26dopt%3DAbstract This report describes a case of recurrence of chronic paracoccidioidomycosis 10 years following the initial diagnosis. A 56-year-old female was admitted to the Dental Clinic of the Pontifical Catholic University of Paraná complaining of oral soreness. Mulberry-like ulcerations were observed on the gingiva, right labial comissura, and vermillion of the lip. The patient reported persistent chronic cough, weight loss, appetite loss and fever. The anamnesis revealed that the patient had developed and been treated for paracoccidioidomycosis 10 years earlier. A biopsy was performed and microscopic examination revealed microabscesses, collections of macrophages organized into granulomas, multinucleated giant cells and Paracoccidioides brasiliensis. The patient was treated with Itraconazole a... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599534 Tue, 01 May 2007 04:00:00 +0100 1599534 http://www.medworm.com/index.php?rid=1599533&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17978548%26dopt%3DAbstract In this study, we evaluated changes in maxillofacial growth in 2 patients with cerebral gigantism during the peripubertal period. Patient 1 was a boy aged 8 years at the first examination. The face showed midface retraction and a tapered mandible. Maxillary median diastema with an OJ of 2.5 mm and OB of 1.0 mm was observed, and the molar region showed mandibular mesial occlusion. Radiography revealed a lack of 15, 25, 37, 47, 14, 24, 34 and 44. Cephalometrics demonstrated maxillary and mandibular retrusion with an SNA of 68 degrees and an SNB of 70 degrees , and the patient had leptoprosopia with a mandibular plane of 38.0 degrees . This plane was 45 degrees at the time of re-examination when the patient was 14 years old, showing an increase in the lower facial height and decreases in faci... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599533 Tue, 01 May 2007 04:00:00 +0100 1599533 http://www.medworm.com/index.php?rid=1599532&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17978549%26dopt%3DAbstract Authors: Sekine H, Taguchi T, Seta S, Takano M, Takeda T, Kakizawa T A 60-year-old man with missing maxillary molar teeth received dental implant therapy for reconstruction of occlusion. Sinus floor elevation with autogenous bone graft consisting of iliac bone block and particulate cancellous bone and marrow (PCBM) was performed in the bilateral maxillary sinuses for implant placement. On the right side, bone height in the molar region was less than 2mm. Therefore, a delayed protocol was applied, and 2 implants were placed 4 months after bone grafting. Bone graft resorption occurred during the healing period of 4 months. On the left side, 3 implants were placed simultaneously with sinus floor elevation, as bone height in the molar region was more than 4-5mm. The bone graft was carried ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599532 Tue, 01 May 2007 04:00:00 +0100 1599532 http://www.medworm.com/index.php?rid=1599541&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17721061%26dopt%3DAbstract Authors: Suzuki T Pain serves as a warning of impending injury, triggering appropriate protective responses. Emotional and cognitive processing in the brain is involved in the sensation of pain. As Ca(2+) waves in keratinocytes are mediated by the release of extracellular molecules such as signaling molecules, this may also affect the activity of surrounding cells such as sensory neurons. Although no junctions have been found between keratinocytes and sensory termini, ultrastructural studies have shown that keratinocytes come into contact with dorsal root ganglion neurons through membrane-membrane apposition. There is also indirect evidence that keratinocytes communicate with sensory neurons via extracellular molecules. Sensory neurons themselves sense various external stimuli, but the... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599541 Thu, 01 Feb 2007 05:00:00 +0100 1599541 http://www.medworm.com/index.php?rid=1599540&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17721062%26dopt%3DAbstract Authors: Haque J, Katakura A, Katakuta A, Kamiyama I, Takagi R, Shibahara T, Noma H We investigated the regulatory effects of sex hormones on tongue carcinoma initiated by orally administration 4-nitroquinoline 1-oxide (4NQO) to rats. Animals of either sex were classified into three groups. The male rats in each group received an estrogen administration (Me), orchiectomy (Mor), or both treatments (Me/or) while the female rats also received testosterone administration (Ft), ovariectomy (Fov), or both treatments (Ft/ov). The differences in the carcinogenic progress among these groups were examined by macroscopic and microscopic observation of tongue tissues. The incidence of cancer in the tongue tissue was 100% in the group reinforced with testosterone (testosterone+group) (Ft, Ft/ov, Me... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599540 Thu, 01 Feb 2007 05:00:00 +0100 1599540 http://www.medworm.com/index.php?rid=1599539&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17721063%26dopt%3DAbstract Authors: Shino T, Kawabata K, Nojima K, Nishii Y, Sueishi K, Yamaguchi H Clarifying the genetic factors involved in maxillofacial growth and development is very important in orthodontic treatment planning and prognosis. However, few dental studies have examined multiple births. The present orthodontic evaluation was conducted using orthodontic data from a set of quadruplets. Orthodontic evaluation was performed on a set of quadruplets (1 girl and 3 boys) aged 9 years and 7 months at the initial visit. Although all 4 children weighed only about 1,400 g each at birth, height and body weight subsequently normalized. Mean skeletal age of the quadruplets was 10 years and 2 months, about 6 months ahead of their calendar age. In all 4 children, facial profile was mostly symmetrical and convex... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599539 Thu, 01 Feb 2007 05:00:00 +0100 1599539 http://www.medworm.com/index.php?rid=1599538&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17721064%26dopt%3DAbstract Authors: Arataki T, Furuya Y, Ito T, Miyashita Y, Shimamura I, Yajima Y The position, depth and direction of implant placement are often planned based on evaluation of radiographs and study casts. Insertion planned in such a manner may not be adequate for precise and safe surgery in some cases due to inadequate working clearance in the oral cavity. In order to obtain high initial stability and ensure osseointegration at the implant-bone interface, careful and precise drilling must be performed at the implant placement site. Therefore, we propose the necessity of evaluating the operability of implant treatment-devices prior to surgery. The amount of handling space needed during implant placement surgery was determined. The results showed that for implants with a length of 7-18 mm, a ver... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599538 Thu, 01 Feb 2007 05:00:00 +0100 1599538 http://www.medworm.com/index.php?rid=1599537&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17721065%26dopt%3DAbstract Authors: Terakawa Y, Handa M, Ichinohe T, Kaneko Y The goal of this study was to compare oral mucosal blood flow and duration of anesthetic action after stellate ganglion block (SGB) using lidocaine, with or without epinephrine, and discuss the effect of epinephrine on SGB. Duration of anesthetic action was defined as elapsed time from finish of injection to recovery of common carotid blood flow (CCBF) to within+/-5% of respective control value. Male Japan White rabbits were anesthetized with isoflurane and mechanically ventilated. Common carotid blood flow and tongue mucosal tissue blood flow (TMBF) were measured with an ultrasound flowmeter and laser Doppler flowmeter, respectively. End-tidal partial pressure of carbon dioxide (ETCO(2)) and hemodynamic variables were continuously mon... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599537 Thu, 01 Feb 2007 05:00:00 +0100 1599537 http://www.medworm.com/index.php?rid=1599545&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17510544%26dopt%3DAbstract Authors: Nomoto S, Matsunaga S, Ide Y, Abe S, Takahashi T, Saito F, Sato T The purpose of the present study was to evaluate stress distribution by finite element analysis in an accurate model simulating trabecular bone using micro-CT. Dentulous and edentulous maxillary jaws of Japanese adult cadavers were used (5 sides each; total, 10 sides). Imaging was performed using a micro-CT, followed by reconstruction with 3-D images. Finite element analysis models were developed using the maxilla with average bone morphometry. A load corresponding to occlusal force was applied in different loading conditions, followed by evaluation of stress distribution. In dentulous maxillas, a load was applied in the dental axis direction to the first molar crown (LD). In edentulous maxillas, a load was appl... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599545 Wed, 01 Nov 2006 05:00:00 +0100 1599545 http://www.medworm.com/index.php?rid=1599544&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17510545%26dopt%3DAbstract In conclusion, our results suggest that prolonged breast-feeding at an early age before primary dentition has fully erupted is a risk factor for dental caries. Therefore, breast-fed children need to be monitored more closely, and aggressive methods of preventive care need to be instituted. It is also important to identify factors related to dental caries among breastfed children as soon as possible, and develop effective preventive programs. PMID: 17510545 [PubMed - indexed for MEDLINE] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599544 Wed, 01 Nov 2006 05:00:00 +0100 1599544 http://www.medworm.com/index.php?rid=1599543&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17510546%26dopt%3DAbstract Authors: Yonezu T, Yotsuya K, Yakushiji M The aim of this study was to investigate the characteristics and risk factors of prolonged breast-feeding in children. A total of 105 children aged 18 months were screened for ongoing breast-feeding at a public health center. Of these, 105 children were selected for a more comprehensive examination, involving investigation of dietary, tooth-brushing habits and oral hygiene. The children were examined again, and initial and manifest caries were recorded at 24 months of age. As a result, 20 (19.0%) of the 105 children had caries at 24 months of age. Logistic regression analysis revealed an association between caries and bedtime breast-feeding (p=0.003). Oral hygiene at 18 months of age was also correlated with caries (p=0.015). It was concluded t... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599543 Wed, 01 Nov 2006 05:00:00 +0100 1599543 http://www.medworm.com/index.php?rid=1599542&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17510547%26dopt%3DAbstract Authors: Matsuzaka K, Sato D, Ishihara K, Hashimoto S, Yoshinari M, Katakura A, Inoue T Defensins are known to play an important role in defense against bacteria. It is also known that immunity against infection is compromised with age. The purpose of this study was to evaluate the localization of human beta-defensin (HBD)-2 in human gingival epithelia according to age. Gingival epithelia in maxillary premolar buccal normal regions was immunohistochemically stained for HBD-2. Specimens were divided into two groups: 6 cases in a young group (<20 years old) and 7 cases in an elderly group (>50 years old). Expression of HBD-2 in gingival epithelium in young subjects was mostly detected in the superficial layer of the parakeratinized layer, while some areas of the spinous cell layer ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599542 Wed, 01 Nov 2006 05:00:00 +0100 1599542 http://www.medworm.com/index.php?rid=1599549&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17344618%26dopt%3DAbstract Authors: Wakoh M, Harada T, Otonari T, Otonari-Yamamoto M, Ohkubo M, Kousuge Y, Kobayashi N, Mizuta S, Kitagawa H, Sano T The purpose of this study was to investigate the accuracy of distance measurements of implant length based on periapical radiographs compared with that of other modalities. We carried out an experimental trial to compare precision in distance measurement. Dental implant fixtures were buried in the canine and first molar regions. These were then subjected to periapical (PE) radiography, panoramic (PA) radiography, conventional (CV) and medical computed (CT) tomography. The length of the implant fixture on each film was measured by nine observers and degree of precision was statistically analyzed. The precision of both PE radiographs and CT tomograms was closest at th... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599549 Tue, 01 Aug 2006 04:00:00 +0100 1599549 http://www.medworm.com/index.php?rid=1599548&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17344619%26dopt%3DAbstract Authors: Shigehara S, Matsuzaka K, Inoue T Morphological change and expression of osteopontin, osteocalcin, and HSP70 mRNAs in rat dental pulp cells with experimental orthodontic tooth movement were investigated. Elastic rubber blocks, 0.65 mm in thickness, were inserted between the maxillary first and second molars in rats. In addition to morphological observations of HE staining and TUNEL staining at days 3, 7, 14 and 28 after insertion of elastic rubber blocks, expression of HSP70, osteopontin and osteocalcin mRNAs was also analyzed using quantitative RT-PCR with a LightCycler. Morphologically, proliferation and vasodilation of capillaries was evident in the pulp at days 3 and 7, and a sparse odontoblast layer and apoptosis in the pulp were observed at days 7 and 14 after rubber blo... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599548 Tue, 01 Aug 2006 04:00:00 +0100 1599548 http://www.medworm.com/index.php?rid=1599547&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17344620%26dopt%3DAbstract Authors: Nakamoto D, Yamamoto N, Takagi R, Katakura A, Mizoe JE, Shibahara T Altered microsatellite DNA in the blood of cancer patients may provide a novel means for tumor detection. Such alterations are a major characteristic of many types of tumor especially those associated with head or neck cancer. Moreover, recent evidence suggests that senescent tumor cells release DNA into the circulation, which is subsequently carried by the blood and thus enriched in the serum and plasma. We tested 10 head and neck cancer patients (5 with malignant melanomas (MM) and 5 with adenoid cystic carcinomas (ACC)) by polymerase chain reaction (PCR)-based microsatellite analysis of DNA from white blood cells and paired plasma samples. Our goal was to amplify two microsatellite markers, D1S243 and D19S2... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599547 Tue, 01 Aug 2006 04:00:00 +0100 1599547 http://www.medworm.com/index.php?rid=1599546&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17344621%26dopt%3DAbstract This article reports the characteristics of this system, and its diagnostic power for maxillofacial lesions and the pre-operative planning dental implants. PMID: 17344621 [PubMed - indexed for MEDLINE] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599546 Tue, 01 Aug 2006 04:00:00 +0100 1599546 http://www.medworm.com/index.php?rid=1599553&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17167218%26dopt%3DAbstract This study was conducted by a team belonging to the Aichi Dental Association. Number of remaining teeth, Community Periodontal Index of Treatment Needs (CPITN), salivary blood test, masticatory ability, bone mineral density (BMD), grip strength, balance test (length of time one can stand on one leg with eyes open), height, weight and body mass index (BMI) were all examined. The percentages of CPITN code 0, 1 and 2 were 68% in the 8020 male elderly and 72% in the 8020 female elderly. The positive percentage in the salivary blood test in the 8020 elderly was lower than that in the non-8020 elderly. Masticatory ability was 1.55 g in the 8020 male elderly, and 1.53 g in the 8020 female elderly. Relative masticatory ability in the 8020 female elderly was 20% higher than that in the non-8020 fem... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599553 Mon, 01 May 2006 04:00:00 +0100 1599553 http://www.medworm.com/index.php?rid=1599552&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17167219%26dopt%3DAbstract Authors: Imai H, Kuwana R, Yonezu T, Yakushiji M To investigate whether the relationship between tooth shape ratio and incisor arrangement proposed by Peck et al. in 1972 was applicable to Japanese children, we compared two groups, one with normal permanent dentition and another with crowded permanent dentition, using chronologically constructed plaster dentition models. Tooth shape ratio was obtained by dividing the incisor mesio-distal width by the labio-lingual width and then multiplying the result by 100. The results revealed a significant difference in the coronal mesio-distal diameter of the incisors between the two groups, but the other items showed no significant differences, suggesting no clear relationship between tooth shape ratio and incisor arrangement. That was, our resul... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599552 Mon, 01 May 2006 04:00:00 +0100 1599552 http://www.medworm.com/index.php?rid=1599551&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17167220%26dopt%3DAbstract Authors: Yoshino K, Osada H, Matsukubo T, Takaesu Y The purpose of this study was to obtain percentile curves for present teeth in smokers and non-smokers for use in oral health education. Dental examinations were carried out by two dentists. The number of present teeth in each subject was counted, excluding the third molars. Subjects consisted of 2,283 men aged between 25 and 54 years enrolled in the health insurance union of a bank in Yokohama, Japan. Each subject completed a questionnaire on smoking habits and number of cigarettes smoked. They were classified into two groups: smokers and non-smokers. The mean number of present teeth in both groups was compared with the Mann-Whitney's U test. Smokers had fewer teeth than non-smokers in all age groups (p<0.05). At the age of 50, th... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599551 Mon, 01 May 2006 04:00:00 +0100 1599551 http://www.medworm.com/index.php?rid=1599550&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D17167221%26dopt%3DAbstract Authors: Wakoh M, Nishikawa K, Otonari T, Yamamoto M, Harada T, Sano T, Yajima Y, Ooguro T The purpose of this study was to investigate digital subtraction technique in digital dental imaging for implant performance, used to quantitatively evaluate bone change around dental implants. For longitudinal assessment of peri-implant bone change, we applied subtraction technique to digital peri-apical radiographs using a digital dental imaging system in two cases at the upper canine and premolar regions. In both cases, we found two peaks of bone change at the crestal region; we also quantitatively demonstrated a marked change over the first one-month period and approximately three-month period spanning the fourth month to the end of the sixth month following implantation. Digital peri-apical ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599550 Mon, 01 May 2006 04:00:00 +0100 1599550 http://www.medworm.com/index.php?rid=1599558&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16924152%26dopt%3DAbstract Authors: Ohazama J, Motegi E, Nomura M, Miyazaki H, Takane Y, Harazaki M, Yamaguchi H, Ishihara K, Okuda K, Matsuda I The purpose of this study was to investigate oral flora in independent persons aged over 80 years with more than 20 remaining teeth. The subjects were 22 participants of the 8020 campaign (6 males and 16 females) with a mean age of 81.3+/-1.6 years and an average of 24.7 teeth (Independent 8020 group). This group was compared with a group of 38 elderly people residing in nursing homes (10 males and 28 females) who had a mean age of 81.3+/-8.5 years and an average of 4.2 teeth (Nursing group with fewer teeth). Saliva samples were collected from the vestibular areas of the maxilla and mandible using cotton swabs. Cell numbers of microorganisms were expressed as colony for... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599558 Wed, 01 Feb 2006 05:00:00 +0100 1599558 http://www.medworm.com/index.php?rid=1599557&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16924153%26dopt%3DAbstract In conclusion, only SSFP is capable of allowing interpretation of emerging pathologic conditions in the TMJ region, when used with a diffusion moment set at between from approximately 100 mT/m(*)msec to 150 mT/m(*)msec. PMID: 16924153 [PubMed - indexed for MEDLINE] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599557 Wed, 01 Feb 2006 05:00:00 +0100 1599557 http://www.medworm.com/index.php?rid=1599556&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16924154%26dopt%3DAbstract Authors: Matsuzaka K, Mabuchi R, Nagasaka H, Yoshinari M, Inoue T This case report describes a 55-year-old woman with an amalgam-like metal remaining in alveolar bone after root-end sealing in 1964, and who then developed eczematous facial symptoms from 2000 onwards. Removal of the amalgam-like metal material improved the symptoms. PMID: 16924154 [PubMed - indexed for MEDLINE] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599556 Wed, 01 Feb 2006 05:00:00 +0100 1599556 http://www.medworm.com/index.php?rid=1599555&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16924155%26dopt%3DAbstract Authors: Yokose T, Sakamoto T, Sueishi K, Yatabe K, Tsujino K, Kubo S, Yakushiji M, Yamaguchi H Abnormalities in number of teeth are occasionally noted in clinical cases. Many theories have been proposed as regards the causes of the occurrence of supernumerary teeth, including atavism theory, mechanical tooth germ separation theory, tissue induction theory, and dental laminar morphological disturbance theory. However, none of these theories alone offers a sufficient explanation for this phenomenon. The incidence of supernumerary permanent teeth is approximately 1-3%. These are the maxillary anterior teeth, the maxillary molars, and the maxillo-mandibular premolars in terms of descending order of site of occurrence. On the other hand, incidence in the mandibular anterior tooth area, of ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599555 Wed, 01 Feb 2006 05:00:00 +0100 1599555 http://www.medworm.com/index.php?rid=1599554&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16924156%26dopt%3DAbstract Authors: Nishimura R, Nojima K, Nishii Y, Hanai J, Arataki T, Uchiyama T, Yamaguchi H Surgical orthodontic treatment and dental implant therapy were performed on a man (aged 18 years 8 months) with mandibular prognathism and seven congenitally missing teeth: upper canines, first and second premolars and lower right second premolar. After 17 months of preoperative orthodontic treatment at age 20 years 1 month, sagittal split ramus osteotomy was performed using the remaining upper deciduous teeth as an anchor for intermaxillary fixation. In postoperative orthodontic treatment, the remaining deciduous teeth were extracted, and fixture installation was performed. The entire therapy required 4 years to complete (age 22 years 8 months). After completion of orthodontic treatment, superstructu... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599554 Wed, 01 Feb 2006 05:00:00 +0100 1599554 http://www.medworm.com/index.php?rid=1599562&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16829710%26dopt%3DAbstract Authors: Maruyama S, Minaguchi K The short tandem repeat (STR) polymorphism of the lipoprotein lipase (LPL) locus was amplified by PCR and analyzed using denaturing polyacrylamide gel electrophoresis followed by silver staining. Among 158 DNA samples from the Japanese population, six alleles were observed. When the sequences of the allelic products were compared, each allelic segment contained 7 and 9-13 TTTA tetranucleotide repeat motifs. Genotypic distribution met Hardy-Weinberg expectations, and included heterozygosity was 48.8%. Most of the Japanese genotypes allele 10. When PCR amplification efficiency for the LPL locus from degraded DNA was compared with that for the D21S11 locus in terms of amplification size, increase in amplification size showed a considerable influence on amp... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599562 Tue, 01 Nov 2005 05:00:00 +0100 1599562 http://www.medworm.com/index.php?rid=1599561&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16829711%26dopt%3DAbstract Authors: Sakurai M, Tada A, Suzuki K, Yoshino K, Sugihara N, Matsukubo T The purpose of this study was to evaluate whether percentile curves for food acceptance response scores were useful in assessing oral and occlusal conditions. We used data obtained from Chiba City Patient Surveys (males: 1,276, females: 1,381, aged 20 to 64), which were conducted in 1998 and 1999. Subjects were assigned scores of between 1 and 4 for 31 different kinds of food based on their food acceptance responses. Occlusal conditions were measured with pressure-sensitive sheets. We calculated the percentile values from 5 to 95 at intervals of five years. We divided the subjects into two groups at the twenty-fifth percentile and statistically analyzed various oral conditions in the two groups. Significant differ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599561 Tue, 01 Nov 2005 05:00:00 +0100 1599561 http://www.medworm.com/index.php?rid=1599560&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16829712%26dopt%3DAbstract This study found that recovery of chewing ability in seniors was essential not only to maintain nutritional status, but also to fully bring out all the functions of the foods themselves. PMID: 16829712 [PubMed - indexed for MEDLINE] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599560 Tue, 01 Nov 2005 05:00:00 +0100 1599560 http://www.medworm.com/index.php?rid=1599559&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16829713%26dopt%3DAbstract Authors: Minaguchi K, Maruyama S, Kasahara I, Nohira C, Hanaoka Y, Tsai T, Kiriyama H, Takahashi N An unknown skeletonized body was identified by DNA analysis and dental information. The body had already been cremated when a candidate for the unknown body was proposed. Therefore, for DNA analysis we used teeth that had been kept for a long time after use for serological examination. We also used a chest X-ray photograph of the candidate and photographs of dentition, as well as dental X-ray photographs taken when the unknown body was found. Because DNA obtained from teeth was highly degraded, we amplified three PCR fragments to determine the 766 bp mitochondrial DNA (mtDNA) sequence including HV1 and HV2. Polymorphism of the ABO locus was also analyzed using small PCR fragments. Althoug... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599559 Tue, 01 Nov 2005 05:00:00 +0100 1599559 http://www.medworm.com/index.php?rid=1599566&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16598180%26dopt%3DAbstract Authors: Sundfeld RH, de Oliveira CH, da Silva AM, Briso AL, Sundfeld ML Length of resin tags yielded by utilization of an one-step conventional adhesive system and self-etching adhesive system on unground enamel was observed. In study Groups I and III, the enamel surface was etched for 60 seconds with 35% phosphoric acid gel and adhesive systems PQ1 (Ultradent Products, Inc) and Adper Prompt L Pop (3M/ESPE) were applied. Adper Prompt L Pop (3M/ESPE) was also applied in Group II in accordance with the manufacturer's recommendations. After application of these adhesive systems to dental enamel, specimens were prepared for light microscopy analysis to ascertain degree of penetration (x400). The results were submitted to an analysis of variance at the 5% level; whenever there was signific... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599566 Mon, 01 Aug 2005 04:00:00 +0100 1599566 http://www.medworm.com/index.php?rid=1599565&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16598181%26dopt%3DAbstract Authors: Okawa K, Ichinohe T, Kaneko Y The purpose of this study was to clarify the effects of anxiety about dental treatment on pain during treatment. Subjects consisted of 57 consenting sixth-grade students at Tokyo Dental College (male: 32, female: 25), all of whom participated in this study during their clinical training program. They knew how third molars were extracted and all had experience of assisting in tooth extraction. Prior to the study, trait anxiety in the subjects was evaluated according to the State-Trait Anxiety Inventory (STAI, Japanese version). The students were asked to read one of two scenarios describing a scene in which a third molar was extracted while imagining themselves to be the patient. Scene 1 is set in an "environment where the patient feels safe and co... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599565 Mon, 01 Aug 2005 04:00:00 +0100 1599565 http://www.medworm.com/index.php?rid=1599564&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16598182%26dopt%3DAbstract Authors: Katada H, Katada H, Isshiki Y The present study investigated the effects of two orthodontic appliances on changes in the cephalometric reference planes using the three-dimensional finite element method. We simulated the use of a headgear and an orthopedic facial mask, two devices for the application of orthodontic force to the jaw. Using a finite element model of the skull, orthodontic force was applied to the maxillary first molar in a posterior or anterior direction. Changes in the maxilla, mandible and cephalometric reference planes were ascertained by the three-dimensional finite element method. The results showed that posterior force caused a slight posterior displacement and clockwise rotation of the reference planes, while anterior force caused anterior displacement and... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599564 Mon, 01 Aug 2005 04:00:00 +0100 1599564 http://www.medworm.com/index.php?rid=1599563&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16598183%26dopt%3DAbstract Authors: Yosano A, Yamamoto M, Shouno T, Shiiki S, Hamase M, Kasahara K, Takaki T, Takano N, Uchiyama T, Shibahara T It is difficult to translate analytical values into accurate model surgery by traditional methods, especially when moving the posterior maxilla. This is because cephalometric radiographic analysis generated information on movement of the posterior nasal spine (PNS) can not be recreated in model surgery. Therefore, we propose a method that accurately reflects such analysis and simulation of movement using Quick Ceph 2000 (Orthodontic Processing Corporation, USA). This will allow the enrichment of model surgery prior to actual surgery in cases where upward movement of the posterior maxilla is involved. All patients who participated in this study had skeletal mandibular pro... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599563 Mon, 01 Aug 2005 04:00:00 +0100 1599563 http://www.medworm.com/index.php?rid=1599571&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16285598%26dopt%3DAbstract The objective of this study was to assess penetration of adhesive material in enamel bleached with 35% hydrogen peroxide using optical polarized light microscopy. Extracted human teeth were randomly assigned to 5 groups, each representing a specific time interval between bleaching and the application of an adhesive material. They were designated as: (TC) the control group-restorations in unbleached teeth; (T0) comprising restorations carried out immediately after bleaching; (T7) comprising restorations 7 days after bleaching; (T14) comprising restorations 14 days after bleaching; and (T21) comprising restorations 21 days after bleaching. Length of resin tags was measured with an Axiophot photomicroscope at a x 400 magnification, and the results subjected to an ANOVA for a comparison betwee... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599571 Sun, 01 May 2005 04:00:00 +0100 1599571 http://www.medworm.com/index.php?rid=1599570&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16285599%26dopt%3DAbstract Authors: Agematsu H, Abe S, Shiozaki K, Usami A, Ogata S, Suzuki K, Soejima M, Ohnishi M, Nonami K, Ide Y The purpose of this study was to elucidate the relationship between large tubules and dentin caries by using human deciduous incisors that showed various levels of attrition but no macroscopical lesions resulting from caries. The teeth were cut longitudinally in the mesio-distal direction and the exposed surfaces observed with a high-resolution field emission scanning electron microscope. The inside of each large tubule showed dense collagen fibers running parallel to its long axis and small spherical bodies of aggregated crystals, but no marked attrition. In teeth where attrition had exposed dentin at the incisal edge, oral bacteria had infiltrated the large tubules. Furthermore, ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599570 Sun, 01 May 2005 04:00:00 +0100 1599570 http://www.medworm.com/index.php?rid=1599569&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16285600%26dopt%3DAbstract Authors: Numasawa H, Yamamoto N, Katakura A, Shibahara T Allelic imbalance or loss of heterozygosity (LOH) and microsatellite instability (MSI) have been used to identify regions on chromosomes that may contain putative tumor suppressor genes. To obtain a detailed understanding of genetic alterations in oral cancer, 10 highly polymorphic markers mapped on chromosome 2 were used to examine 25 cases of oral squamous cell carcinoma (SCC). With these, we analyzed chromosome 2q for LOH in 25 primary oral SCCs and constructed a deletion map for this arm of the chromosome. LOH was detected in 16 (64%) of the 25 informative samples at one or more of the loci examined. MSI was observed in 5 (20%) of the 25 cases. Among the loci examined, LOHs were restricted to D2S1328 and D2S206 on chromosomes... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599569 Sun, 01 May 2005 04:00:00 +0100 1599569 http://www.medworm.com/index.php?rid=1599568&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16285601%26dopt%3DAbstract In this study, we investigated the effects of 10 cycles of conventional autoclaving (121 degrees C, 20 min) on the dimensional integrity and physical properties (flexural rigidity and brittleness) of a newly developed root canal filling point made of polypropylene (FLEX POINT NEO). We measured the diameters of autoclave-sterilized and non-treated polypropylene points (020 through 070) and calculated the incidence of deviation from ISO specifications (6877.4.4.1, 1995). In order to ascertain physical properties, we tested autoclave-sterilized and non-treated polypropylene points (030, 050 and 070) for flexural rigidity. This was done by evaluating deflection value when a load was placed at the free tip-end of the point and brittleness in accordance with ISO specifications (6877.6.5.2). Ten ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599568 Sun, 01 May 2005 04:00:00 +0100 1599568 http://www.medworm.com/index.php?rid=1599567&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D16285602%26dopt%3DAbstract Authors: Tazaki M, Matsuzaka K, Ikumoto H, Inoue T A blood examination was carried out in order to assess the serum zinc level in a patient with taste dysfunction. A blood cell count was also performed simultaneously and promyelocytic leukemia was identified. This case provides an example of leukemia being detected at the time of a blood test being given to assess taste dysfunction. PMID: 16285602 [PubMed - indexed for MEDLINE] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599567 Sun, 01 May 2005 04:00:00 +0100 1599567 http://www.medworm.com/index.php?rid=1599575&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D15960157%26dopt%3DAbstract Authors: Nashimoto M, Matsuzaka K, Yoshinari M, Shimono M, Inoue T The purpose of this study was to investigate the behavior of rat bone marrow cells (RBM) growing on surfaces with different pore sizes. RBM behavior on Millipore filters (MF-Millipore membrane filter) made from cellulose mixed esters with 5 different pore surfaces (0.45 microm, 1.2 microm, 3.0 microm, 5.0 microm and 8.0 microm) were compared in terms of morphological changes on the different pore sizes. Furthermore, the expressions of osteopontin and osteocalcin mRNAs were investigated. On the 1.2 microm and 3.0 microm pore surfaces, RBM attached to the substrate well, but cells on the 5.0 microm and 8.0 microm pore surfaces invaded deeply into the pores. Higher levels of both osteopontin and osteocalcin mRNA expression... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599575 Mon, 01 Nov 2004 05:00:00 +0100 1599575 http://www.medworm.com/index.php?rid=1599574&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D15960158%26dopt%3DAbstract Authors: Zhiyong L, Arataki T, Shimamura I, Kishi M The aim of this study was to observe the influence of prosthesis design and loading condition on the stress distributions of tooth-implant supported prostheses. Six 2D finite element models, two reference models, and four experimental models were computed to simulate different prosthesis designs. Six different loading conditions were applied to investigate the stress distributions of tooth and implant, respectively. The stresses of reference models were considered as 100%; the stresses of experimental models at the same locations were compared with those of reference models. The stresses around implants were higher than those around teeth. When vertical loading was applied only on the implant, the stresses to both the implant and teet... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599574 Mon, 01 Nov 2004 05:00:00 +0100 1599574 http://www.medworm.com/index.php?rid=1599573&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D15960159%26dopt%3DAbstract Authors: Sato D, Matsuzaka K, Yama M, Kakizawa T, Inoue T This case report describes a rare case of an adenomatoid odontogenic tumor (AOT) arising in the mandibular third molar region of a 20-year-old female. The tumor was a well-circumscribed intraosseous lesion with an embedded tooth. Histologically, the induction of extensive globular calcification was evident in addition to the characteristic histological features of AOT. The present case lends support to the categorization of AOT as an odontogenic tumor consisting of a disorderly mixture of odontogenic epithelium and odontogenic ectomesenchyme with calcification. PMID: 15960159 [PubMed - indexed for MEDLINE] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599573 Mon, 01 Nov 2004 05:00:00 +0100 1599573 http://www.medworm.com/index.php?rid=1599572&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D15960160%26dopt%3DAbstract Authors: Matsuzaka K, Murakami S, Shimono M, Inoue T This case report describes a rare case of canalicular adenoma arising in the upper lip of a 61-year-old male patient. Macroscopic examination of the tumor revealed a well-defined, smooth, firm, elastic hard, round nodule with a diameter of 1.0 cm. The cut surface was white. Histopathology showed that the tumor was an encapsulated mass with a complex cellular pattern of anastomosing duct-like or trabecular structures lined by a single layer of tall columnar epithelial cells, which were embedded in a loose, fibrous, and highly vascular connective tissue stroma. The tumor cells were immunoreactive to AE1/AE3, CK19 and S-100, were partially positive for CK7, CK8, GFAP and PCNA, but were negative for SMA, CK13, CK14 and vimentin. PMID... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599572 Mon, 01 Nov 2004 05:00:00 +0100 1599572 http://www.medworm.com/index.php?rid=1599579&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D15779459%26dopt%3DAbstract Authors: Ishii T, Nojima K, Nishii Y, Takaki T, Yamaguchi H The interalveolar septum between the upper first molar and the second premolar of the separated human maxillary bone was three-dimensionally observed by micro CT to evaluate the appropriate mini-screw type implant placement position by considering the relationship between the tooth roots and the maxillary sinus. After taking micro CTs of 5 human maxillary bones, horizontally sectioned images of the interalveolar septum area 2, 4, 6, 8, 10, and 12 mm deep from the crest of the alveolar ridge were reconstructed by three-dimensional reconstruction software. The bucco-lingual and mesio-distal lengths and area in each sectioned interalveolar septum were measured using digital image measurement software. Using the results, the inter... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599579 Sun, 01 Aug 2004 04:00:00 +0100 1599579 http://www.medworm.com/index.php?rid=1599578&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D15779460%26dopt%3DAbstract CONCLUSIONS: These results suggest that GIC-sealants in the oral cavity can serve as a fluoride reservoir and contribute to retaining a low fluoride level in oral fluids, thereby preventing caries. PMID: 15779460 [PubMed - indexed for MEDLINE] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599578 Sun, 01 Aug 2004 04:00:00 +0100 1599578 http://www.medworm.com/index.php?rid=1599577&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D15779461%26dopt%3DAbstract We examined 112 patients who visited the Otolaryngology Department at Tokyo Dental College, Ichikawa General Hospital, with the chief complaint of nocturnal snoring or sleep apnea from January 2001 to April 2003 and underwent all-night PSG (polysomnography). Based upon the results of these all-night PSGs, 89 and 23 patients were diagnosed as having OSAS and simple snoring, respectively. Using the AHI classification of severity, 58 and 31 patients were assessed as having severe OSAS and mild OSAS, respectively. (1) nCPAP was tried in 61 patients, and 39 patients (63%) were able to continue it. After the introduction of nCPAP, surgery was performed in 18 patients (30%). As a result, weaning from nCPAP was successfully achieved in 10 cases, compliance with nCPAP was improved in six cases, all... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599577 Sun, 01 Aug 2004 04:00:00 +0100 1599577 http://www.medworm.com/index.php?rid=1599576&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D15779462%26dopt%3DAbstract Authors: Suzuki T The effects of endothelin-1 were studied in vitro on neurons in the hamster submandibular ganglion, using the intracellular microelectrode technique. Endothelin (1 microM) caused a depolarization (5.5 +/- 1.2 mV) followed by a hyperpolarization (8.5 +/- 2.8 mV) of the membrane potential. Membrane conductance was increased during the endothelin-induced depolarization and was decreased during the endothelin-induced hyperpolarization. The endothelin-induced depolarization was depressed (mean 43.6%) in a Krebs solution containing zero calcium and high magnesium. The results suggested that the predominant component of the depolarization was mediated by calcium ions. The calcium-insensitive component of depolarization was carried by chloride ions. Endothelin-induced slow rh... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599576 Sun, 01 Aug 2004 04:00:00 +0100 1599576 http://www.medworm.com/index.php?rid=1599584&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D15536857%26dopt%3DAbstract Authors: Sundfeld RH, Mauro SJ, Briso AL, Sundfeld ML The clinical behavior of Concise and Prisma Shield sealants for pit and fissure was analyzed by clinical/photographic evaluation. A hematoxylin-based staining solution was applied to the occlusal surface 7 days, 18 months, 36 months, and 11 years after the occlusal sealing, thus allowing the sealant material on the surface to be checked. At each analysis time, each occlusal surface was photographed, and the photographs corresponding to each time were submitted to clinical/photographic evaluation. Although the sealant materials showed marginal alterations over time, they did not require reapplication because the region composed of the pit and fissure remained covered. PMID: 15536857 [PubMed - indexed for MEDLINE] (Source: The Bul... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599584 Sat, 01 May 2004 04:00:00 +0100 1599584 http://www.medworm.com/index.php?rid=1599583&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D15536858%26dopt%3DAbstract Authors: Takanashi K, Kishi M, Okuda K, Ishihara K Colonization by periodontopathic bacteria is a risk factor for peri-implantitis. The purpose of this study was to investigate the colonization by black-pigmented anaerobic bacteria that occurs between the time before fixture installation and 6 months after inserting superstructures in implant treatment in partial edentulous cases. Dental plaque was serially collected from around the natural teeth and implants in 12 patients in whom a dental implant was indicated, and Porphyromonas gingivalis and Prevotella intermedia were detected using polymerase chain reaction (PCR). One month after connecting the abutment, the detection rate of P. gingivalis per site from around the implants was 63.7% and that of P. intermedia was 50.8%. Six months ... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599583 Sat, 01 May 2004 04:00:00 +0100 1599583 http://www.medworm.com/index.php?rid=1599582&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D15536859%26dopt%3DAbstract Authors: Tsuchiya Y, Sueishi K, Yatabe K, Yamaguchi H Antley-Bixler syndrome is a disorder characterized by craniosynostosis, midface hypoplasia, choana blockade, and radiohumeral synostosis. However, the features of occlusion remain unclear. In this paper, we report a case of Antley-Bixler syndrome, a 7-year-old boy, from the viewpoint of orthodontics. From lateral cephalometric head film analysis, remarkable retardation of the anterior subcranial base, infraorbitale, and maxilla were notable, as was vertical growth restriction of the maxilla. The choana blockade tendency was also recognized. Moreover, although reverse occlusion was present, a mandibular retrognathic tendency was also present, and a short ramus mandible, remarkable mandibular vertical growth pattern, and skeletal open... The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599582 Sat, 01 May 2004 04:00:00 +0100 1599582 http://www.medworm.com/index.php?rid=1599581&cid=s_37646_11_f&fid=37646&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D15536860%26dopt%3DAbstract This report concludes that the pathological diagnosis is beneficial in clarifying the reasons for the recurrence of a benign lesion. PMID: 15536860 [PubMed - indexed for MEDLINE] (Source: The Bulletin of Tokyo Dental College) The Bulletin of Tokyo Dental College journals http://www.medworm.com/rss/comments.php?id=1599581 Sat, 01 May 2004 04:00:00 +0100 1599581