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 'Odontology' source. Wed, 08 Feb 2012 12:06:29 +0100 http://www.medworm.com/index.php?rid=5620109&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fh52101487228m17m%2F Abstract  The aim of this study was to explore the expression of RANK, RANKL and OPG during ankylosis. Structural details and immunohistochemical investigations of the expression of RANK, RANKL and OPG in an extracted secondary retained permanent molar of a 12-year-old girl are reported. Woven and lamellar bones were observed in the thickness of the remodeled dental wall and a tertiary dentin was noticed around the pulp cavity. The resorbing multinucleated cells expressed TRAP and RANK but few of them also expressed RANKL. Both odontoblasts and osteoblasts expressed TRAP and RANK, but the expression of RANKL was limited to osteoblasts. OPG remained undetected. The present case reveals unusual expression of RANKL in the resorbing cells, TRAP and RANK in both osteoblasts and ... Odontology journals http://www.medworm.com/rss/comments.php?id=5620109 Tue, 17 Jan 2012 07:18:43 +0100 5620109 http://www.medworm.com/index.php?rid=5620111&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fg505758m0525413j%2F This study compared the diagnostic accuracy of digital radiographic images with conventional radiographs for the detection of experimentally induced root fractures. Horizontal fractures were induced by a mechanical force to the root of 15 single rooted teeth. Vertical fractures were induced in 15 single rooted teeth and 15 molars, respectively, by disk cutting. The teeth were mounted in dried mandibles and were radiographed with the parallel technique using a CCD-based Planmeca imaging system and F-speed films. Seven observers recorded their findings and then 2 pairs of them examined the same images together. Az values expressed the diagnostic accuracy of the imaging systems and the degree of agreement was estimated using the Cohen’s kappa statistic. The areas under the ROC curves ... Odontology journals http://www.medworm.com/rss/comments.php?id=5620111 Tue, 17 Jan 2012 07:18:42 +0100 5620111 http://www.medworm.com/index.php?rid=5620110&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F12m4261126x58710%2F This study aimed to verify the effect of EDTA and/or PDGF application on root adhesion and proliferation of PDL fibroblast cells. Eighty specimens were prepared from forty periodontitis teeth and made five groups: (1) diseased (untreated), (2) SRP (scaling root planing), (3) EDTA (24%), (4) PDGF (25 ng/ml) and (5) Combined application of EDTA and PDGF. Periodontal ligament cells were cultured on the above conditioned dentin plate, and SEM examination was preformed and cells were counted within a representative standard area for both cell morphology and density. All groups including untreated showed significantly increase of adhered cells from baseline to 7 days. Among them, rate of increase was much higher in EDTA, PDGF, and combined groups. ANOVA test indicated that the nu... Odontology journals http://www.medworm.com/rss/comments.php?id=5620110 Tue, 17 Jan 2012 07:18:42 +0100 5620110 http://www.medworm.com/index.php?rid=5560215&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fp186601836626mq2%2F Abstract  Tooth colour matching of composite materials is often a common problem caused by a dark background from the oral cavity. Therefore, the aim of the study was to evaluate a novel aesthetic composite material and to assess the influence of white and black backgrounds. Tooth shades of 30 freshly extracted upper front teeth were determined using a spectrophotometer (SpectroShade™) both against a white and a black background. Two class IV cavities in each tooth were prepared and restored using three different composite resins: Arabesk™ (AB), Synergy™ (SE) and the novel material Amaris™ (AM). After water storage for 1 week, differences in hue, saturation and lightness were measured to assess changes from baseline. After thermocycling, teeth were evaluated onc... Odontology journals http://www.medworm.com/rss/comments.php?id=5560215 Fri, 30 Dec 2011 07:08:41 +0100 5560215 http://www.medworm.com/index.php?rid=5494947&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F00821g76v4555735%2F Abstract  A growing number of older people have teeth, which are vulnerable to oral diseases. To maintain good oral health, an adequate amount of saliva should be secreted and the saliva should possess adequate buffer capacity. The study aim was to investigate the associations of saliva secretion rate and acidity with gender, age, and some medical characteristics in a convenience sample of physically disabled older care home residents. In 20 male and 30 female physically disabled older care home residents with a mean age of 78.1 ± 9.7 years, the resting, chewing-stimulated, and acid-stimulated whole saliva secretion rate and acidity, as well as the main medical diagnosis and the number of medications used, were registered. Resting, chewing-stimulated and aci... Odontology journals http://www.medworm.com/rss/comments.php?id=5494947 Sat, 10 Dec 2011 16:55:52 +0100 5494947 http://www.medworm.com/index.php?rid=5486850&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fd1l1ll501324127m%2F In this study, the association of red complex (RC) bacteria that include Treponema denticola, Tannerella forsythia and Porphyromonas gingivalis with acute, exacerbated or chronic apical periodontitis was evaluated. Seventy-one patients with periapical disease were evaluated by clinical examination and microbiological samples obtained from the root canals were analyzed by a polymerase chain reaction assay. Twenty-one (29.6%) samples were positive for RC bacteria, with T. denticola, T. forsythia and P. gingivalis being detected in 14 (19.7%), 10 (14.1%) and 6 (8.5%) samples, respectively. RC bacteria were mainly associated with acute apical periodontitis (29.2%) and phoenix abscess (63.2%), while they were only sporadically detected (7.1%) in patients with chronic apical periodontitis.... Odontology journals http://www.medworm.com/rss/comments.php?id=5486850 Mon, 05 Dec 2011 17:36:13 +0100 5486850 http://www.medworm.com/index.php?rid=5476579&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fk517507464044886%2F Abstract  The aim of this review is to highlight some key recent developments in studies of tooth number, size and shape that are providing better insights into the roles of genetic, environmental and epigenetic factors in the process of dental development. Advances in molecular genetics are helping to clarify how epigenetic factors influence the spatial and temporal regulation of the complex processes involved in odontogenesis. At the phenotypic level, the development of sophisticated systems for image analysis is enabling new dental phenotypes to be defined. The 2D and 3D data that are generated by these imaging systems can then be analysed with mathematical approaches, such as geometric morphometric analysis. By gathering phenotypic data and DNA from twins, it is now pos... Odontology journals http://www.medworm.com/rss/comments.php?id=5476579 Fri, 02 Dec 2011 17:30:10 +0100 5476579 http://www.medworm.com/index.php?rid=5408102&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fm26503l768633943%2F Abstract  To determine the adverse effects against human dental pulp tissue, the sensitivity of human dental pulp cells (D824 cells) to 18 chemical agents used for endodontic treatments in dentistry was examined. The cytotoxicity, as determined by a decrease in colony-forming ability of cells treated with the chemical agents, increased as the concentration increased. As a quantitative measure of the cytotoxic effect, LC50, the concentration which induces a 50% lethality, was extrapolated from the concentration–response curves. The rank of the chemical agents according to their cytotoxic effect (LC50) was sodium arsenite > formaldehyde > hydrogen peroxide > zinc oxide > thymol ≈ iodoform ≈ eugenol&nb... Odontology journals http://www.medworm.com/rss/comments.php?id=5408102 Mon, 14 Nov 2011 16:53:38 +0100 5408102 http://www.medworm.com/index.php?rid=5408103&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa406255q2272r712%2F Abstract  The purpose of the present study was to compare joint designs for the laser welding of cast metal plates and wrought wire, and to evaluate the welded area internally using X-ray micro-focus computerized tomography (micro-CT). Cast metal plates (Ti, Co–Cr) and wrought wires (Ti, Co–Cr) were welded using similar metals. The specimens were welded using four joint designs in which the wrought wires and the parent metals were welded directly (two designs) or the wrought wires were welded to the groove of the parent metal from one or both sides (n = 5). The porosity and gap in the welded area were evaluated by micro-CT, and the maximum tensile load of the welded specimens was measured with a universal testing machine. An element analysis was conducted using... Odontology journals http://www.medworm.com/rss/comments.php?id=5408103 Fri, 11 Nov 2011 12:48:56 +0100 5408103 http://www.medworm.com/index.php?rid=5408104&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa5xt602175760200%2F This study evaluated the vertical discrepancy of implant-fixed 3-unit structures. Frameworks were constructed with laser-sintered Co–Cr, and vacuum-cast Co–Cr, Ni–Cr–Ti, and Pd–Au. Samples of each alloy group were randomly luted in standard fashion using resin-modified glass-ionomer, self-adhesive, and acrylic/urethane-based cements (n = 12 each). Discrepancies were SEM analyzed. Three-way ANOVA and Student–Newman–Keuls tests were run (P < 0.05). Laser-sintered structures achieved the best fit per cement tested. Within each alloy group, resin-modified glass-ionomer and acrylic/urethane-based cements produced comparably lower discrepancies than the self-adhesive agent. The abutment position did not yield significant differences. All misfit values cou... Odontology journals http://www.medworm.com/rss/comments.php?id=5408104 Thu, 10 Nov 2011 16:56:23 +0100 5408104 http://www.medworm.com/index.php?rid=5408105&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fh5m7194p537044wq%2F Abstract  Here, we discuss the pathophysiology of leukemia-associated gingival enlargement based on a case of acute myelomonocytic leukemia (AML-M4) with typical gingival enlargement. Uniquely, this patient was well enough to allow full periodontal examination and incisional gingival biopsy to be performed both before and after chemotherapy. The patient was a 39-year-old Japanese woman with AML-M4 showing gingival enlargement. Histological and immunohistochemical features of gingiva and bacterial counts in the periodontal pockets were examined before and after chemotherapy. The results were as follows: (1) infiltration of myelomonocytic blasts in enlarged gingiva; (2) resolution of gingival enlargement with complete remission of AML by anticancer chemotherapy; and (3) the n... Odontology journals http://www.medworm.com/rss/comments.php?id=5408105 Thu, 10 Nov 2011 16:56:22 +0100 5408105 http://www.medworm.com/index.php?rid=5408106&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F1r0t46441g334gh0%2F The objective of the study was to determine the antimicrobial efficacy of three denture adhesives toward Streptococcus oralis, mutans, Prevotella oralis and Fusobacterium nucleatum. Adhesives used were Corega Ultra®, Fixodent Pro Original® and Biotene® Denture Grip. For Streptococcus oralis and Streptococcus mutans, four tubes of Trypticase Soy Broth 10 mL and 1 g denture of adhesive were used. In addition four tubes of Trypticase Soy Broth 10 mL without any denture adhesive was employed as control. For Prevotella oralis and Fusobacterium nucleatum, four tubes of thioglycolate 10 mL and 1 g denture adhesive were used for each one, while four tubes of thioglycolate 10 mL without adhesive served as control. All samples were incubated for 48 h at 37°C.... Odontology journals http://www.medworm.com/rss/comments.php?id=5408106 Thu, 10 Nov 2011 16:56:21 +0100 5408106 http://www.medworm.com/index.php?rid=5347529&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F57526517t5154341%2F Abstract  Heparanase is an endo-β-d-glucuronidase enzyme which degrades heparan sulfate glycosaminoglycan side chains of proteoglycans in the extracellular matrix and in basement membranes. The aim of this study was to evaluate the expression of heparanase in periapical granulomas (PGs) and radicular cysts (RCs). Immunohistochemistry was used to assess heparanase expression in PGs and RCs. Parameters including stain intensity, location and cell type were used to characterize heparanase expression in the periapical lesions. Ordered categories (from weak to strong) were used to compare the level of heparanase staining in the PG and RC groups. Both epithelial cells and inflammatory cells were positive for heparanase. The relative staining of the epithelial cells was strong, wh... Odontology journals http://www.medworm.com/rss/comments.php?id=5347529 Fri, 21 Oct 2011 15:58:59 +0100 5347529 http://www.medworm.com/index.php?rid=5335780&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fm011466g72022416%2F In this study, HL-60 cell-derived monocytes were characterized following interaction with Streptococcus gordonii DL1. Exposure of monocytes to S. gordonii DL1 induced up-regulation of the dendritic cell (DC) markers CD83, CD1a, CD86, and interleukin-12, while monocyte markers PU.1 and MafB, which are typically present at low levels in mature DCs, were down-regulated. Interaction of HL-60-derived monocytes with S. gordonii DL1 was instructive for DC differentiation in the absence of released cytokines. Furthermore, neither the filtered culture medium of S. gordonii nor the hsa mutant, deficient in sialic acid-binding activity, was able to induce the differentiation of HL-60 cells. Taken together, these data suggest that monocytes stimulated with S. gordonii DL1 rapidly undergo monocyte... Odontology journals http://www.medworm.com/rss/comments.php?id=5335780 Mon, 17 Oct 2011 16:04:29 +0100 5335780 http://www.medworm.com/index.php?rid=5324015&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fh28r17rq91673151%2F This study aims to investigate the levels of OB and s-OB-R in serum and their presence in gingiva of healthy controls (HC), gingivitis (G), aggressive periodontitis (AP), and chronic periodontitis (CP) patients; and whether correlations exist between clinical and serum parameters, OB and s-OB-R. Seventy-seven subjects [HC (n = 20), G (n = 20), CP (n = 21), and AP (n = 16)] were included in this study. After the clinical periodontal parameter recordings and venous blood sampling, gingival tissues obtained. Serum parameters’ levels determined with enzyme linked immune sorbent assay; and OB and OB-R in gingiva immunohistochemically. No significant differences were observed regarding the serum parameters [high sensitivity C-reactive protein (hs-C... Odontology journals http://www.medworm.com/rss/comments.php?id=5324015 Sat, 15 Oct 2011 15:47:26 +0100 5324015 http://www.medworm.com/index.php?rid=5297026&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fv48762231lx55221%2F Abstract  Three-dimensional observation during embryogenesis is possible with micro-computed tomography, but there are no observations of organ size. In this paper, three examples of three-dimensional observation of organs by micro-CT are tried. At 13.0 days post-coitum, mouse embryos were fixed in 4% paraformaldehyde for 24 h and stained enbloc by osmium tetroxide overnight. The embryos were then embedded in paraffin using standard methods for 24 h. Specimens were analyzed by micro-computed tomography and image processing was performed. The entire Meckel’s cartilage and its relation in the mandible, as well as the complex structure of the otocyst, are easily visualized. Although it is difficult to extract detailed structures of the tongue muscles, it is po... Odontology journals http://www.medworm.com/rss/comments.php?id=5297026 Tue, 04 Oct 2011 05:49:45 +0100 5297026 http://www.medworm.com/index.php?rid=5260738&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fm0442851t22q68k0%2F Abstract  The purpose of this study was to evaluate, ex vivo, the push-out bond strength of a new filling material (Smartseal) compared with gutta-percha/AH-26. A total of 40 extracted single-rooted human teeth were used. After instrumentation using the ProTaper rotary system, the root canals were filled as follows: Group 1, Smartseal sealer and a 0.06 taper Smartpoint calibrated to apical tip size 30; Group 2, Smartseal sealer and an F3 SmartpointPT; Group 3, AH-26 sealer and a single F3 ProTaper gutta-percha cone and Group 4, AH-26 sealer and gutta-percha using the cold lateral condensation technique. Two successive disk shaped slices were cut from each root sample and the bond strength was measured using the push-out test. Two-way analysis of variance was used for data a... Odontology journals http://www.medworm.com/rss/comments.php?id=5260738 Fri, 23 Sep 2011 15:48:30 +0100 5260738 http://www.medworm.com/index.php?rid=5260739&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F3n15k30844203538%2F Abstract  Sufficient flexural strength is required for long-term clinical use of fixed partial dentures made with fiber-reinforced composite. The flexural strengths of indirect composite materials reinforced with a monomer-preimpregnated glass fiber material were determined to evaluate the compatibility of the composites to glass fiber material. Four types (microhybrid, nanohybrid, microfilled, and minifilled) of indirect composites and a unidirectional long glass fiber material were selected for investigation. The composites were placed on a fiber plate and polymerized in accordance with the respective manufacturer’s instructions. Rectangular bar fiber–composite specimens were machined and the flexural strength was calculated. The flexural strength of each indirect com... Odontology journals http://www.medworm.com/rss/comments.php?id=5260739 Tue, 20 Sep 2011 05:49:49 +0100 5260739 http://www.medworm.com/index.php?rid=5250801&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F3673730716472750%2F Abstract  The gingival crevicular fluid (GCF) contains various biomarkers, such as interleukin (IL)-1β, IL-6, IL-8, tumor necrosis factor-α (TNF-α), and IL-10, among others. These cytokines have been reported to correlate with gingival inflammation and periodontal status. Therefore, the analysis of GCF may be useful for the diagnosis of periodontal status. Pentraxin 3 (PTX3) is the first identified long pentraxin, and is released by several cell types in response to proinflammatory signals. The aim of this study was to determine the levels of IL-1β, IL-6, IL-8, TNF-α, IL-10 and PTX3 in GCF from diseased and healthy sites in patients with chronic periodontitis. Cross-sectional clinical data were obtained from 50 patients with chronic periodontitis. GCF samples were coll... Odontology journals http://www.medworm.com/rss/comments.php?id=5250801 Mon, 19 Sep 2011 13:44:35 +0100 5250801 http://www.medworm.com/index.php?rid=5161780&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fv413251g5407p603%2F Abstract  Using a casting ring with openings on both sides and a water-absorbent polymer, heterogeneity is maintained in a single casting and a precise MOD inlay can be produced. We produced 9 different kinds of gold–silver–palladium (Au–Ag–Pd) alloys by changing the ratio of palladium, gold, and copper and investing them, and changing parameters such as the angulation of the casting ring openings and the water:powder ratios to produce MOD inlay castings. We measured the expansion and shrinkage percentage of the castings in both the buccolingual and mesiodistal directions. From this experiment, we learned that precise MOD inlay castings can be produced using rings with 240° openings when invested in a thick mix having a standard water:powder ratio or using rings wi... Odontology journals http://www.medworm.com/rss/comments.php?id=5161780 Fri, 19 Aug 2011 15:59:20 +0100 5161780 http://www.medworm.com/index.php?rid=5088567&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fg359v56773612n57%2F Content Type Journal ArticlePages 1-1DOI 10.1007/s10266-011-0035-0Authors Mikiko Nakamura, Division of Dentistry and Oral Surgery, Department of Sensory and Locomotor Medicine, School of Medicine, University of Fukui, Fukui, JapanYoshimasa Kitagawa, Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Graduate School of Dental Medicine, Hokkaido University, North 13, West 7, Kita-ku, Sapporo, 060-8586 JapanYutaka Yamazaki, Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Graduate School of Dental Medicine, Hokkaido University, North 13, West 7, Kita-ku, Sapporo, 060-8586 JapanHironobu Hata, Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Graduate School of Dental Medicine, Hokkaido University, North 13, West 7, Kita-k... Odontology journals http://www.medworm.com/rss/comments.php?id=5088567 Sat, 30 Jul 2011 15:51:35 +0100 5088567 http://www.medworm.com/index.php?rid=5088568&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F06x6k37622t0832q%2F This article provides a short overview of the ongoing studies for the potential application of dental stem cells and suggests the utilization of 2 concepts in future regenerative medicine: (1) dental stem cell-based therapy for hepatic and other systemic diseases and (2) tooth replacement therapy using the bioengineered human whole tooth, called the “test-tube dental implant.” Regenerative therapies will bring new insights and benefits to the fields of clinical medicine and dentistry. Content Type Journal ArticlePages 1-7DOI 10.1007/s10266-011-0037-yAuthors Taka Nakahara, Department of Developmental and Regenerative Dentistry, The Nippon Dental University School of Life Dentistry at Tokyo, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159 Japan Journal OdontologyOnline ISSN ... Odontology journals http://www.medworm.com/rss/comments.php?id=5088568 Sat, 30 Jul 2011 15:51:33 +0100 5088568 http://www.medworm.com/index.php?rid=5020788&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F12402j7j432q41k7%2F Abstract  Periodontal disease is a highly prevalent group of illnesses of microbial etiology, whose consequence is a severe breakdown of tooth-supporting structures. A link between periodontal infection and several systemic conditions, among which adverse pregnancy outcomes, has been suggested in the recent years. The aim of this review based on case–control studies was to evaluate if periodontal disease could be considered as a risk factor for preterm birth, low birth-weight and preterm low birth-weight. An electronic search (via Pubmed) was performed for case–control studies investigating the relationship between periodontal disease and adverse pregnancy outcomes. From the initially retrieved 417 articles, 17 case–control studies, accounting for a total of 10,148 pa... Odontology journals http://www.medworm.com/rss/comments.php?id=5020788 Fri, 08 Jul 2011 06:31:28 +0100 5020788 http://www.medworm.com/index.php?rid=4977701&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fg72h288r10231261%2F Abstract  The cytotoxic effect of eugenol on the expression of molecular markers related to the osteogenic differentiation of human dental pulp cells such as collagen synthesis and the expression of two osteogenesis-related genes, alkaline phosphatase (ALP) and bone sialoprotein (BSP), was studied using human dental pulp cells (D824 cells). Cellular growth and survival were decreased by treatment of cells with eugenol in a concentration-dependent manner. The incorporation rate of [3H] proline into the acid-insoluble fraction and the synthesis of type I–V collagens were also reduced by treatment of cells with eugenol in a concentration-dependent fashion. The mRNA expression of ALP was scarcely affected in cells exposed to eugenol, whereas the mRNA and protein expression of ... Odontology journals http://www.medworm.com/rss/comments.php?id=4977701 Sat, 25 Jun 2011 15:51:28 +0100 4977701 http://www.medworm.com/index.php?rid=4970344&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ft420w45x73271w24%2F Abstract  The aim of this study was to record self-reported factors for non-compliance to ‘dental home’ preventive measures among pediatric patients, and to clarify whether number or frequency of recall appointments increases their long-term compliance to dental home. Children attending recall appointments in a pediatric dental clinic were interviewed regarding their compliance as well as factors for non-compliance with the previously recommended preventive measures. Files of 651 children were analyzed. A significant positive correlation was found between compliance with regular teeth brushing twice a day (p < 0.0001), using correct fluoride concentration toothpaste (p < 0.0001), drinking water between meals (p < 0.0001), using Elmex... Odontology journals http://www.medworm.com/rss/comments.php?id=4970344 Wed, 22 Jun 2011 16:01:15 +0100 4970344 http://www.medworm.com/index.php?rid=4970346&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fl4pq214x71508155%2F Abstract  Connective tissue, one of the main components of peri-implant soft tissue, is key to the formation of the peri-implant mucosal seal and helping to prevent epithelial ingrowth. Rough surfaces (Rs), machined surfaces (Ms) or microgrooved surface (MG) are used in the neck area of commercially available titanium implants. In this paper, we aimed to evaluate the influence of surface topography of titanium substratum on connective tissue fibroblasts to gain a better understanding of this effect. Fibroblasts were cultured on titanium plates with Rs, Ms and MG. Adhesion cell number at day 3 was compared and protein distribution of both F-actin and vinculin was determined to observe cellular structure and adhesion. Cell adhesion strength was compared on each surface. At da... Odontology journals http://www.medworm.com/rss/comments.php?id=4970346 Tue, 21 Jun 2011 16:41:03 +0100 4970346 http://www.medworm.com/index.php?rid=4970345&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fl74k488pr082k358%2F This study used finite element method to analyze the stress distribution in connector of ceramic-based bilayer structures, in simulation of dental crown-like structures with a functional but weak veneer layer bonded onto a strong core layer. The purpose of this study was to evaluate the stress distribution at veneer/core interface of 2 different core materials [Yttria-stabilized tetragonal zirconia polycrystals (Y-TZP) and lithia disilicate-reinforced glass–ceramic] using three-dimensional finite element analysis. Within the limitations of this study, finite element analysis showed that stress concentrations were located at the veneer/core interface of the connector in Y-TZP core models. The general observation was that compared with Y-TZP, lithia disilicate-reinforced glass–cera... Odontology journals http://www.medworm.com/rss/comments.php?id=4970345 Tue, 21 Jun 2011 16:41:03 +0100 4970345 http://www.medworm.com/index.php?rid=4946572&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F016687jv27k3r423%2F Abstract  Surface substance loss of subsurface enamel lesions before (baseline/demineralization) and after each step of the infiltration technique was evaluated by means of a three-dimensional focus variation. Eighty enamel specimens were prepared and partially varnished (control). Non-varnished areas were demineralized (pH 4.95; 28 days), and etched with phosphoric acid gel (20%; 5 s). Specimens were randomly assigned to eight groups (n = 10), and were infiltrated using four resinous materials. In subgroups 1, polymerization and finishing with abrasive polishing strips followed. In subgroups 2, excess material was removed before polymerization (E1/E2-Excite, Vivadent; F1/F2-Fortify, Bisco; G1/G2-Glaze & Bond, DMG; I1/I2-Icon, DMG). Topometrical evaluatio... Odontology journals http://www.medworm.com/rss/comments.php?id=4946572 Thu, 16 Jun 2011 05:50:01 +0100 4946572 http://www.medworm.com/index.php?rid=4946573&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Frv76344p5l5ww722%2F Abstract  The purpose of this study was to evaluate the effects of the maxillary arch expansion on maxillomandibular arch widths in patients treated with the quad-helix versus untreated controls. The treatment group consisted of 50 consecutive patients treated for maxillary incisor crowding with a quad-helix appliance in the early mixed dentition. Lateral cephalograms and dental casts taken at the start (T0) and end (T1) of the quad-helix treatment were obtained. The control group consisted of 50 untreated patients with the same type of malocclusion. Two consecutive lateral cephalograms and dental casts of each untreated patient were taken at about the same time as T0 and T1. All these study materials were analyzed for comparison between the two groups. The mean ages at T0 ... Odontology journals http://www.medworm.com/rss/comments.php?id=4946573 Wed, 15 Jun 2011 06:19:19 +0100 4946573 http://www.medworm.com/index.php?rid=4904246&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F84hl1518hl85023w%2F This study evaluated the influence of ethanol/water ratios on the bond strength to dentin of experimental two-step, self-etch adhesive systems. Self-etch primers were prepared with constant 40 mass % of solvents. The ethanol/water ratios tested were 7:1 (P1), 3:1 (P2), and 1:1 (P3); primers with only ethanol (PE) or water (PW) as solvent were also tested. The bond strength to the dentin was investigated through a microtensile bond strength test. Resin–dentin beam-shaped specimens were obtained and tested after 24 h, 6 months, and 1 year of storage in water at 37°C. The hybridization morphology was analyzed using SEM. For bond strength at 24 h, PE = P1, P1 = P2, and P2, P3 and PW > PE. After 6 months, PE = P1 &... Odontology journals http://www.medworm.com/rss/comments.php?id=4904246 Mon, 23 May 2011 17:05:02 +0100 4904246 http://www.medworm.com/index.php?rid=4904245&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fgl22711722041716%2F Abstract  Overexpression of epidermal growth factor receptor (EGFR) is associated with resistance to chemotherapy and radiotherapy, advanced tumor stage, invasion, metastasis and poor prognosis in malignant tumors. EGFR, therefore, has been an attractive molecular target for chemotherapy. However, the results of clinical studies using inhibitors of its kinase activity have not been promising because the response rates were at most 20%. Sodium-glucose co-transporter 1 (SGLT1) is a membrane protein that mediates the transport of glucose across cellular membranes. EGFR physically associates with and stabilizes SGLT1 to promote glucose uptake into cancer cells through a kinase-independent process. The purpose of this study was to investigate the coexpression of SGLT1 and EGFR a... Odontology journals http://www.medworm.com/rss/comments.php?id=4904245 Mon, 23 May 2011 17:05:02 +0100 4904245 http://www.medworm.com/index.php?rid=4904247&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fp44x3472450u177x%2F We report the case of a patient with lipoma extending superiorly from the mandibular gingivobuccal fold to the gingiva. In addition to the case report, we retrospectively reviewed 207 patients with intraoral lipoma reported in Japan from 1987 to 2004. The most frequent site of development was the buccal mucosa (40.6%), followed by the tongue (17.9%), lip (12.6%), gingiva (8.7%), oral floor (6.8%), gingivobuccal fold and palate (4.8%), and others (3.9%). Occurrence tended to be more frequent in males (57.5%) than in females (42.5%). Relative to age, frequency peaked among patients in the 7th (27.3%) and 6th decades (25.1%), respectively, followed in descending order by the 5th (14.8%) and 8th decades (13.1%). The majority of patients (86.3%) were at least 40 years. The most frequ... Odontology journals http://www.medworm.com/rss/comments.php?id=4904247 Mon, 23 May 2011 17:05:01 +0100 4904247 http://www.medworm.com/index.php?rid=4904248&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ff07732541484305k%2F Abstract  RAS overexpression and its active mutations are involved in malignant tumorigenesis. However, the mutation rates in oral carcinoma cells differ between populations. In the present study, genomic DNA of oral carcinoma cells (HOC313, TSU, HSC2, HSC3, KOSC2, KOSC3, SCCKN, OSC19, Ca9.22, and Ho1u1 cells) or normal gingival fibroblasts (GF12 cells) derived from a Japanese population were amplified by polymerase chain reaction using primer sets, spanning HRAS and KRAS exons. Nucleotide substitutions were analyzed by single strand conformation polymorphism. In contrast to no substitutions in KRAS, nine different substitutions were detected in HRAS. Of the nine, six substitutions were located at intron 1 (HSC2 and HSC3 cells) or intron 2 (HSC3, SCCKN and Ca9.22 cells), and... Odontology journals http://www.medworm.com/rss/comments.php?id=4904248 Mon, 23 May 2011 17:05:00 +0100 4904248 http://www.medworm.com/index.php?rid=4904249&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F2263403756812n51%2F Abstract  The purpose of this study was to examine, morphologically and histochemically, five types of conditioning effects on cavities prepared with an Er,Cr:YSGG laser and an air-turbine. Cavities were prepared using a Waterlase® MD turbo handpiece (W) and an air-turbine (AT) on human extracted molars. The cavity conditionings used were non-conditioned (G1), K-etchant Gel (G2), K-etchant Gel + AD Gel (G3), Clearfil SE Bond primer (G4) and Clearfil S3 Bond (G5). On naked eye observations, enamel of G1, G2 and G3 in the W cavities and etched enamel of G2 and G3 in the AT cavities were observed as rough and dull in appearance. G4 and G5 in W and AT cavities were observed as shiny surfaces. On SEM observations, no smeared layer was observed in W cavities, while a sme... Odontology journals http://www.medworm.com/rss/comments.php?id=4904249 Sat, 21 May 2011 23:06:43 +0100 4904249 http://www.medworm.com/index.php?rid=4854374&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fwt7h2kr5mw407783%2F We report a case of type III KFS with associated rib anomalies such as cervical rib, fusion and bifid ribs, scoliosis and fused crossed renal ectopia. The aim of this paper was to summarize all craniofacial anomalies that occur in association with KFS, so that clinicians would be aware of them during diagnosis and treatment planning. Content Type Journal ArticlePages 1-6DOI 10.1007/s10266-011-0004-7Authors Venkatesh G. Naikmasur, Department of Oral Medicine and Radiology, S.D.M. College of Dental Sciences and Hospital, Dharwad, 580 009 Karnataka, IndiaAtul P. Sattur, Department of Oral Medicine and Radiology, S.D.M. College of Dental Sciences and Hospital, Dharwad, 580 009 Karnataka, IndiaR. N. Kirty, Department of Oral Medicine and Radiology, S.D.M. College of Dental Sciences an... Odontology journals http://www.medworm.com/rss/comments.php?id=4854374 Thu, 19 May 2011 16:33:52 +0100 4854374 http://www.medworm.com/index.php?rid=4831499&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F9600x3664748x5v2%2F Abstract  Hypoxia is known to have been related with angiogenesis and glycolysis, and may have an influence on tumor treatment effect. Because glucose utilization is higher in malignant cells than that in normal cells, dynamic glucose metabolism of tumor has been evaluated by means of [18F]-fluorodeoxyglucose positron emission tomography (FDG-PET). To investigate the significance of tumor vascularization in oral squamous cell carcinoma, we compared tumor angiogenesis with the FDG-PET findings. Twenty patients underwent FDG-PET. For the quantitative evaluation of FDG uptake in each tumor, the mean standardized uptake value (SUV) was calculated. Microvessel structures labeled with CD34 antigen were investigated in pretreatment biopsy specimens. Using an image analyzer, we calc... Odontology journals http://www.medworm.com/rss/comments.php?id=4831499 Thu, 12 May 2011 16:42:25 +0100 4831499 http://www.medworm.com/index.php?rid=4831501&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fy876400308219t65%2F Abstract  Phosphoglucosamine mutase (GlmM; EC 5.4.2.10) catalyzes the interconversion of glucosamine-6-phosphate to glucosamine-1-phosphate, an essential step in the biosynthetic pathway leading to the formation of the peptidoglycan precursor uridine 5′-diphospho-N-acetylglucosamine. We have recently identified the gene (glmM) encoding the enzyme of Streptococcus gordonii, an early colonizer on the human tooth and an important cause of infective endocarditis, and indicated that the glmM mutation in S. gordonii appears to influence bacterial cell growth, morphology, and sensitivity to penicillins. Moreover, the glmM mutation results in increased sensitivity to polymorphonuclear leukocyte (PMN)-dependent killing. In the present study, we observed similarities in the utilization... Odontology journals http://www.medworm.com/rss/comments.php?id=4831501 Thu, 12 May 2011 16:42:23 +0100 4831501 http://www.medworm.com/index.php?rid=4831500&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F8215651838376758%2F Abstract  The enamel matrix derivative (EMD) has been used extensively as an adjunct to root coverage procedures to achieve periodontal regeneration. However, its effect on gingival tissues has not been elucidated. The aim of this investigation was to evaluate histometrically the change in gingival soft tissue thickness around dehiscence-type defects treated with EMD. Five adult female beagle dogs were used. Buccal osseous dehiscences were surgically created on the maxillary canines and the second and fourth premolars. Thirty defect sites were randomly assigned to test and control groups (15 defect sites for each group). The test group received EMD application, whereas the control group did not. After 4 months of healing, the dogs were killed and tissue blocks were pre... Odontology journals http://www.medworm.com/rss/comments.php?id=4831500 Thu, 12 May 2011 16:42:23 +0100 4831500 http://www.medworm.com/index.php?rid=4822037&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa555736862x5m758%2F This study evaluated the correlation between three strip-type, colorimetric tests and two laboratory methods with respect to the analysis of salivary buffering. The strip-type tests were saliva-check buffer, Dentobuff strip and CRT® Buffer test. The laboratory methods included Ericsson’s laboratory method and a monotone acid/base titration to create a reference scale for the salivary titratable acidity. Additionally, defined buffer solutions were prepared and tested to simulate the carbonate, phosphate and protein buffer systems of saliva. The correlation between the methods was analysed by the Spearman’s rank test. Disagreement was detected between buffering capacity values obtained with three strip-type tests that was more pronounced in case of saliva samples with medium and lo... Odontology journals http://www.medworm.com/rss/comments.php?id=4822037 Tue, 10 May 2011 06:01:53 +0100 4822037 http://www.medworm.com/index.php?rid=4822039&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fq44823k1476p123h%2F Abstract  The purpose of the study was to determine the effect of removing or modifying the smear layer on the indication provided by the Prepometer pulp proximity-indicating instrument. Third molars were prepared to produce flat surfaces in the coronal dentine, and control Prepometer LED readings were made. Group E was treated with 18% EDTA and Group T with Tubulicid. Prepometer readings were repeated. Dentine was removed in 0.5 mm increments, and readings repeated until a red LED appeared, indicating a danger of pulp exposure. Distances to the pulp were measured. t test, Wilcoxon signed ranks test (WSR) and ordinal regression (OR) analysis were performed, together with SEM examination. There were significant differences between both test groups and their untreated con... Odontology journals http://www.medworm.com/rss/comments.php?id=4822039 Tue, 10 May 2011 06:01:52 +0100 4822039 http://www.medworm.com/index.php?rid=4822038&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F195530v0230v7012%2F Abstract  In an effort to identify a possible role for type III collagen in the morphogenesis of circumvallate papillae on the surface of the rat tongue, we examined its appearance by fluorescent immunostaining, in conjunction with differential interference contrast images and images obtained, after staining with toluidine blue, in the transmission mode by laser-scanning microscopy. We analyzed semi-ultrathin sections of epoxy resin-embedded samples of the lingual mucosa of embryonic and juvenile rats, 13 days after conception (E13) to day 21 after birth (P21). Immunoreactivity specific for type III collagen was recognized first in the mesenchymal connective tissue just beneath the circumvallate papilla placode in fetuses on E13. At this stage, most of the lingual epit... Odontology journals http://www.medworm.com/rss/comments.php?id=4822038 Tue, 10 May 2011 06:01:52 +0100 4822038 http://www.medworm.com/index.php?rid=4822040&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F836xp8861l774708%2F The objective of this study is to characterize the defects in the dentin surface after air polishing for three types of polishing powders and five different nozzle distances. Human teeth were embedded in acrylic resin and then polished until the dentin surface became exposed. The nozzle of the polisher was fixed at a specified distance (2, 3, 4, 5, or 6 mm) and orientation (45°) with respect to the dentin surface. The three powders were CLASSIC (NaHCO3, 65 μm diameter), PERIO (glycine, 25 μm diameter), and SOFT (glycine, 65 μm diameter). With respect to nozzle distance, we find a significant difference in the mean defect depth only at 6 mm. The spray distance of 6 mm produced the shallowest defect depths. This variable had no effect on the defect volu... Odontology journals http://www.medworm.com/rss/comments.php?id=4822040 Tue, 10 May 2011 06:01:51 +0100 4822040 http://www.medworm.com/index.php?rid=4806011&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F6446m545883431vg%2F Abstract  Oral ulceration is one of the common adverse effects of nicorandil in European countries. In Japan, however, only 9 cases of nicorandil-induced oral ulceration have been reported. Here, we report 3 cases of nicorandil-induced oral ulceration, one of which exhibited a unique clinical course associated with Candida infection. In this case, the initial discontinuation of nicorandil failed to ameliorate the lesion. However, the second discontinuation of the drug after the control of the Candida infection overlying the surface of the ulcer produced a favorable effect. This patient was diagnosed with nicorandil-induced tongue ulceration with Candida infection. Content Type Journal ArticlePages 1-4DOI 10.1007/s10266-011-0015-4Authors Haruhiko Terai, Division of Medi... Odontology journals http://www.medworm.com/rss/comments.php?id=4806011 Fri, 06 May 2011 16:15:54 +0100 4806011 http://www.medworm.com/index.php?rid=4806012&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fm40360g671422u52%2F Abstract  The Zung Self-Rating Depression Scale (SDS) is generally used to screen for the presence of depression. The purpose of this study was to investigate scores on the SDS, Japanese version, in undergraduates at Tsurumi University School of Dental Medicine in Yokohama, Japan. A total of 2,197 dental students completed the SDS from 2006 through 2008. The investigation took place each year over a 3-week period from June to July. When investigating, the Institutional Review Board at Tsurumi University approved the study. Students could voluntarily agree or decline to participate in the study, and all responses were provided anonymously. SDS scores by sex, class year, and change over time were analyzed. The mean SDS score ranged from 43.7 ± 8.5 to 44.8 ±&n... Odontology journals http://www.medworm.com/rss/comments.php?id=4806012 Fri, 06 May 2011 16:15:53 +0100 4806012 http://www.medworm.com/index.php?rid=4806013&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F53200k74h7353tu0%2F This study investigated the recurrence in the permanent dentition of dental anomalies of the primary dentition. A sample of 189 subjects (100 males, 89 females, mean age of 5 years and 7 months) with anomalies of primary teeth (tooth hypodontia, supernumerary teeth, geminated teeth, and fused teeth) was selected and re-analyzed at a mean age of 11 years and 2 months for the recurrence of the dental anomalies in the permanent dentition. As a control group, 271 subjects (123 males, 148 females) without dental anomalies in the primary dentition were selected. The recurrence in the permanent dentition of the dental anomalies in the primary dentition was evaluated by measures of diagnostic performance. The results showed high values for the repetition of hypodontia (po... Odontology journals http://www.medworm.com/rss/comments.php?id=4806013 Fri, 06 May 2011 16:15:51 +0100 4806013 http://www.medworm.com/index.php?rid=4806014&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Flgj36710264921n1%2F This study was conducted to examine the bond strength of rebonded orthodontic brackets after adhesive residuals on the surface of the bracket bases were removed by Er,Cr:YSGG lasers. Seventy-six brackets bonded to premolars with a self-etching primer adhesive system were equally divided into four groups after the first debonding with the bracket bases (Group 1) untreated, and treated by (Group 2) Er,Cr:YSGG laser, (Group 3) sandblaster, and (Group 4) Er,Cr:YSGG laser/sandblaster. The treated brackets were rebonded to the new premolars in the same manner as the first-stage experiment. The shear bond strengths were measured, with the bonding/debonding procedures repeated once after the first debonding, and the bracket/adhesive failure modes were evaluated after each debonding. The trea... Odontology journals http://www.medworm.com/rss/comments.php?id=4806014 Fri, 06 May 2011 16:15:50 +0100 4806014 http://www.medworm.com/index.php?rid=4806016&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fk258610v73483w7j%2F Abstract  The purpose of this study was to compare the apical sealing capacity of three types of gutta-percha master cones of the same apical size and different tapers following root canal preparation with nickel–titanium ProTaper Universal rotary instruments and microstructural replication with System B and Obtura III. Thirty extracted human incisors having one single straight root canal (type I Weine) were instrumented with rotary ProTaper to an F3 (30/.09) and gauged to confirm a final apical size of #30. Teeth were divided into three groups (n = 10) to be obturated as follows: Group 1: master cone Meta 0.06 taper/AH Plus, Group 2: master cone fine-medium Autofit 0.08 taper/AH Plus, and Group 3: master cone ProTaper F3 0.09 taper/AH Plus. The chosen technique ... Odontology journals http://www.medworm.com/rss/comments.php?id=4806016 Fri, 06 May 2011 16:15:47 +0100 4806016 http://www.medworm.com/index.php?rid=4806015&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fu16506378g64v123%2F Abstract  The response of bone cells to mechanical loading is mediated by the cytoskeleton. Since the bone anabolic agent fluoride disrupts the cytoskeleton, we investigated whether fluoride affects the response of bone cells to mechanical loading, and whether this is cytoskeleton mediated. The mechano-response of osteoblasts was assessed in vitro by measuring pulsating fluid flow-induced nitric oxide (NO) production. Osteocyte shape was determined in hamster mandibles in vivo as parameter of osteocyte mechanosensitivity. Pulsating fluid flow (0.7 ± 0.3 Pa, 5 Hz) stimulated NO production by 8-fold within 5 min. NaF (10–50 μM) inhibited pulsating fluid flow-stimulated NO production after 10 min, and decreased F-actin content by ~3-fold. ... Odontology journals http://www.medworm.com/rss/comments.php?id=4806015 Fri, 06 May 2011 16:15:47 +0100 4806015 http://www.medworm.com/index.php?rid=4806017&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fk8u618250073144j%2F This study investigated the association between clinical and salivary or molecular parameters in Down syndrome subjects. Sixty individuals (1- to 48-year old) were clinically examined using DMFT/DMFS. Stimulated saliva was collected; salivary flow was calculated (mL/min), buffering capacity was measured using a standard pH tape. In addition, 25 μL of saliva was diluted using 10-fold-dilution method and then placed on Mitis-Salivarius-Bacitracin agar to count colony forming units (CFU/mL) of mutans streptococci. Polymerase chain reaction analysis identified species. Caries indexes were 0.65–13.5 (DMFT) and 0.65–26.0 (DMFS) according to groups. Ninety-four percent of subjects had low flow rate (0.7–1.0 mL/min) and 44% had low buffering capacity (pH < 4). B... Odontology journals http://www.medworm.com/rss/comments.php?id=4806017 Fri, 06 May 2011 05:46:47 +0100 4806017 http://www.medworm.com/index.php?rid=4748656&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fd133850831440425%2F Abstract  The purpose of this study was to test the bond strength and analyze the morphology of the dentin-adhesive interface of two etch and rinse and two self-etch adhesive systems with two kinds of artificial saliva (with and without 450 mg/L mucin) contamination under different conditions of decontaminating the interface. Bonded specimens were sectioned perpendicularly to the bonded surface in 1-mm thick slabs. These 1-mm thick slabs were remounted in acrylic blocks and sectioned in sticks perpendicular to the bonding interfaces with a 1-mm2 area. Nine specimens from each condition were tested after 24 h on a testing machine (Instron) at a speed of 0.5 mm/min for a total of 360 specimens. Mean and standard deviations of bond strength (MPa) were calculated.... Odontology journals http://www.medworm.com/rss/comments.php?id=4748656 Fri, 22 Apr 2011 16:00:38 +0100 4748656 http://www.medworm.com/index.php?rid=4748657&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F5222509l647r7623%2F This study examined the wound-healing process of exposed rat pulp when treated with experimental adhesive resin systems. The experimental direct pulp capping adhesive resin systems were composed of primer-I, primer-II and an experimental bonding agent. Primer-I was Clearfil SE Bond (CSE) primer containing 1.0 or 5.0 wt% CaCl2, and primer-II was CSE primer containing 0.1, 1.0 or 5.0 wt% compound of equal mole of pA and pB with synthetic peptides derived from dentin matrix protein 1 (DMP1). Primer-I containing 1.0 and 5.0 wt% CaCl2 was assigned to the experimental groups 1–3 and 4–6, respectively. Primer-II containing 0.1, 1.0 or 5.0 wt% compound of pA and pB was assigned to the experimental groups 1 and 4, 2 and 5, and 3 and 6, respectively. In all experimental g... Odontology journals http://www.medworm.com/rss/comments.php?id=4748657 Fri, 22 Apr 2011 16:00:37 +0100 4748657 http://www.medworm.com/index.php?rid=4745139&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F87828t45067q7073%2F Abstract  Although hepatitis C virus (HCV) infection is associated with oral lichen planus (OLP), a case–control study and a meta-analysis were designed to investigate the magnitude of such an association. A total of 413 presumptive OLP patients (18–75 years) who referred to a dental clinic in Rasht (Iran) were consecutively selected. OLP was diagnosed clinically (typical forms) and histologically (atypical forms) by a calibrated examiner. A total of 487 adults (20–77 years) attending the same dental clinic were the controls. The two groups were homogeneous in terms of age, gender and occupation. Subjects were tested for anti-HCV antibodies. The odds ratio (OR) for OLP attributable to HCV infection was non-significant [OR 1.2, 95% confidence interval (95CI) ... Odontology journals http://www.medworm.com/rss/comments.php?id=4745139 Wed, 20 Apr 2011 06:04:39 +0100 4745139 http://www.medworm.com/index.php?rid=4725717&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ff35521121p4ng813%2F In conclusion, the clinical implications of the results will need to be further studied and discussed. Content Type Journal ArticlePages 1-7DOI 10.1007/s10266-011-0011-8Authors Je-Kang Du, Department of Dentistry, Kaohsiung Medical University Hospital, No.100, Tz-you 1st Rd., Kaohsiung, 807 TaiwanWei-Ko Lin, Faculty of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, TaiwanChau-Hsiang Wang, Department of Dentistry, Kaohsiung Medical University Hospital, No.100, Tz-you 1st Rd., Kaohsiung, 807 TaiwanHuey-Er Lee, Department of Dentistry, Kaohsiung Medical University Hospital, No.100, Tz-you 1st Rd., Kaohsiung, 807 TaiwanHung-Yuan Li, Department of Mold and Die Engineering, National Kaohsiung University of Applied Science, Kaohsiung, TaiwanJu-Hui Wu, Depa... Odontology journals http://www.medworm.com/rss/comments.php?id=4725717 Wed, 13 Apr 2011 15:58:52 +0100 4725717 http://www.medworm.com/index.php?rid=4725718&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fe8u8p1460035667p%2F Abstract  The aim of the study was to investigate any correlation between tactile sensation and occlusal loading conditions of mandibular premolars and molars, by means of tactile detection threshold (TDT). TDTs of mandibular premolars and molars of twenty adults were determined by calibrated monofilaments. Occlusal force (OF) applied on each tooth at maximal-clenching was measured by a pressure-sensitive film. There was neither a correlation between the mean TDTs and the total OFs of individual participant nor in each tooth type. TDTs of the teeth on the preferred chewing side were significantly higher than those of the contralateral side. The results suggest that periodontal sensation is more related to frequency than to magnitude of loading. Content Type Journal Arti... Odontology journals http://www.medworm.com/rss/comments.php?id=4725718 Wed, 13 Apr 2011 15:58:51 +0100 4725718 http://www.medworm.com/index.php?rid=4725719&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Flr1774341q962834%2F We report on an MFH of the left maxilla that developed in a 79-year old woman 20 years after surgery and radiation for squamous cell carcinoma (SCC). Postoperative radiotherapy with 70 Gy was administered for a primary neoplasm of SCC of the left maxilla to a localized field through two lateral ports. This secondary neoplasm arose at the site of tumor resection (partial maxillectomy) within the irradiated field, and was resected. The development of sarcomas is a recognized complication of radiation therapy. The final diagnosis after the operation was MFH. The patient died of tumor recurrence at the skull base and within the cranium, 19 months after the operation. Radiation-induced sarcoma is well known, but radiation-induced MFH is relatively rare in the head and neck ... Odontology journals http://www.medworm.com/rss/comments.php?id=4725719 Tue, 12 Apr 2011 21:32:01 +0100 4725719 http://www.medworm.com/index.php?rid=4710208&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F224474873q151683%2F This study was conducted with 12 complete maxillary denture wearers. Four commercially available denture adhesives Super Corega®, Corega Ultra®, Super Corega Powder® and Fittydent Cationic® were investigated. Testing protocol and sequence included baseline measurements without adhesives (control) for previous and new dentures and then replications of measurements with the four adhesives. Maximum dislodgement forces were recorded in two sites between central incisors and the left 2nd premolars by using an electronic and disposable gnathodynamometer. To estimate the effect of the different adhesives on the dislodgement forces, data were analyzed by a 2- and 3-way ANOVA, while for estimating the agreement of the two devices a Bland–Altman and Mountain plots were used. ANOVAs indica... Odontology journals http://www.medworm.com/rss/comments.php?id=4710208 Mon, 11 Apr 2011 15:52:00 +0100 4710208 http://www.medworm.com/index.php?rid=4415436&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fk81h0618gp701371%2F This study examined the clinical, histological, and immunohistochemical features as well as the differential diagnoses of oral intravascular papillary endothelial hyperplasia (IPEH) to aid clinicians and pathologists in its diagnosis. Clinical features of five oral IPEH cases were obtained from medical records, and all histopathological diagnoses were reviewed. Immunohistochemical reactions, including anti-CD-34, laminin, vimentin, estrogen receptor alpha, and Ki-67, were assessed. Microscopically, a reactive proliferation of vascular cells composed of small papillary structures with hypocellular and hyalinized cores arising in an organized thrombus was seen. CD-34, vimentin, and laminin staining were strongly positive, while estrogen receptor alpha was negative in all cases. A low p... Odontology journals http://www.medworm.com/rss/comments.php?id=4415436 Thu, 27 Jan 2011 01:14:32 +0100 4415436 http://www.medworm.com/index.php?rid=4415435&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fkp57837q627872qv%2F This study compared the sealing ability of Nd:YAG laser versus a new resin in scanning electron microscopy (SEM) micrographs. Ten human premolars were sectioned yielding 30 specimens of each premolar, which were randomly divided into three groups. The laser group was irradiated by Nd:YAG laser (1 W, 10 Hz, 60 s), the resin group was treated with the new Seal & Protect resin according to the manufacturer’s instructions, and the third group served as the control group and did not receive any interventions. After preparation and gold coating of the samples, they were photographed by SEM at two magnifications (1500× and 4000×). The number and diameter (μm) of the dentinal tubules were recorded in selected fields, and analysis of variance (ANOVA) and Tukey tests were used to determin... Odontology journals http://www.medworm.com/rss/comments.php?id=4415435 Thu, 27 Jan 2011 01:14:32 +0100 4415435 http://www.medworm.com/index.php?rid=4415437&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F327067207255p38n%2F Abstract  To examine the effects of oral xylitol administration on rat femur bone density, 36 four-week-old male Wistar rats divided into three groups were fed CE-2 diet (control, n = 12) alone or supplemented with 10% (n = 12) or 20% (n = 12) dietary xylitol for 40 days. Biochemical, morphological, and histological analyses were performed. The 10% and 20% xylitol groups showed higher levels of both serum Ca and alkaline phosphatase activity and lower levels of serum tartrate-resistant acid phosphatase than the control group. Although no significant differences in the three-dimensional bone structure or trabecular bone structure of the femur were observed, both xylitol groups showed significantly higher bone density than the control group. Compared to the control group, the ... Odontology journals http://www.medworm.com/rss/comments.php?id=4415437 Thu, 27 Jan 2011 01:14:30 +0100 4415437 http://www.medworm.com/index.php?rid=4415438&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa7224541m4631747%2F Abstract  Physical weathering is usually responsible for the degradation of maxillofacial prosthetic elastomers and the replacement of prostheses. The purpose of this study was to investigate the effects of outdoor weathering on the physical properties of four nonpigmented facial prosthetics after 1 year of exposure. In addition, simple mathematical models were developed to correlate the measured properties with irradiation time, including parameters with physical meaning. Three different medical-grade polydimethyl siloxanes (PDMSs) and an experimental chlorinated polyethylene (CPE) were examined in this study. The samples were exposed to solar radiation for 1 year in Athens, Greece. Mechanical tests (compression and tensile) were performed using universal-type testing mach... Odontology journals http://www.medworm.com/rss/comments.php?id=4415438 Thu, 27 Jan 2011 01:14:27 +0100 4415438 http://www.medworm.com/index.php?rid=4415441&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fql67471962885411%2F This study examined the effects of direct pulp capping treatment using super-pulsed CO2 laser preirradiation on the wound healing process of exposed rat pulp on days 1, 3, 7, 14, and 28 postoperatively. Group 1 was irradiated with a CO2 laser and directly capped with a self-etching adhesive system. The laser was operated in super-pulse mode (pulse duration, 200 μs; interval, 5800 μs; 0.003 J/pulse). The irradiation conditions were a power output of 0.5 W, an irradiation time of 3 s, and repeat mode (10 ms of irradiation at 10-ms intervals for a total beam exposure time of 1.5 s), defocused beam diameter of 0.74 mm (approximately 20 mm from the exposed pulp surface), energy density of 0.698 J/cm2 per pulse, total applied energy of 0.75 J, and an activated air-cooling system. Group 2 w... Odontology journals http://www.medworm.com/rss/comments.php?id=4415441 Thu, 27 Jan 2011 01:14:26 +0100 4415441 http://www.medworm.com/index.php?rid=4415440&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fqg589631048w3267%2F Abstract  We aimed to evaluate the effect of a denture cleanser and NaOCl 5.25% solution on the modulus of elasticity, the ultimate stress, and the weight changes of Co-Cr and Ti-6Al-7Nb alloys. To evaluate the modulus of elasticity and ultimate stress, 24 Co-Cr and 24 Ti-6Al-7Nb castings were fabricated, immersed in Corega Extradent, NaOCl 5.25%, or water in subgroups of six each. Thirty-six castings were produced to evaluate weight changes, 18 Co-Cr and 18 Ti-6Al-7Nb, and immersed in Corega Extradent, NaOCl 5.25%, or water in subgroups of six each. Changes in the modulus of elasticity, ultimate stress, and weight were calculated before and after immersion in the cleanser or NaOCl 5.25% solution for 45 cycles of 10 min each. Two-way analysis of variance ANOVA and Tukey’s... Odontology journals http://www.medworm.com/rss/comments.php?id=4415440 Thu, 27 Jan 2011 01:14:26 +0100 4415440 http://www.medworm.com/index.php?rid=4415439&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F2444545wn3813068%2F Abstract  The aim of this study was to assess inter- and intra-examiner reproducibility and accuracy in the detection and assessment of occlusal caries in extracted human teeth using the newly developed fluorescence based camera VistaProof. Serial sectioning and microscopy are considered the gold standard. The occlusal surfaces of 53 teeth (99 investigation sites) were examined by two examiners with different levels of experience in cariology (one experienced dentist, one final-year dental student) and the VistaProof. Thereafter, the teeth were serially sectioned and assessed for lesion depth. The intraclass correlation coefficients for inter- and intra-examiner reproducibility for the fluorescence-based examinations were 0.76–0.95. There was a significant correlation bet... Odontology journals http://www.medworm.com/rss/comments.php?id=4415439 Thu, 27 Jan 2011 01:14:26 +0100 4415439 http://www.medworm.com/index.php?rid=4415443&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fy031462q50751027%2F Abstract  Bisphosphonate effects on the skeleton have been studied in the context of a broad range of disciplines, including endocrinology, orthopedics, oncology, and dentistry. The emergence of osteonecrosis of the jaw as a rare but serious side effect of bisphosphonate treatment has stimulated interest in understanding how this drug class affects the oral skeleton. This review focuses on recent work describing how bisphosphonates affect bone remodeling, tissue properties, and postsurgical healing in the oral cavity. Content Type Journal ArticlePages 8-17DOI 10.1007/s10266-010-0153-0Authors Matthew R. Allen, Department of Anatomy and Cell Biology, Indiana University School of Medicine, 635 Barnhill Drive, MS-5035, Indianapolis, IN 46202, USA Journal OdontologyOn... Odontology journals http://www.medworm.com/rss/comments.php?id=4415443 Thu, 27 Jan 2011 01:14:25 +0100 4415443 http://www.medworm.com/index.php?rid=4415442&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fg1h7371133256535%2F Abstract  Stem cells constitute the source of differentiated cells for the generation of tissues during development, and for regeneration of tissues that are diseased or injured postnatally. In recent years, stem cell research has grown exponentially owing to the recognition that stem cell-based therapies have the potential to improve the life of patients with conditions that span from Alzheimer’s disease to cardiac ischemia to bone or tooth loss. Growing evidence demonstrates that stem cells are primarily found in niches and that certain tissues contain more stem cells than others. Among these tissues, the dental pulp is considered a rich source of mesenchymal stem cells that are suitable for tissue engineering applications. It is known that dental pulp stem cells have t... Odontology journals http://www.medworm.com/rss/comments.php?id=4415442 Thu, 27 Jan 2011 01:14:25 +0100 4415442 http://www.medworm.com/index.php?rid=4415445&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F78175649r5535r72%2F Abstract  During orthodontic therapy, patients frequently complain about pain and discomfort, especially during insertion of fixed appliances. Skeletal anchorage using an interdental microimplant is a new concept in orthodontic treatment. The purpose of this study was to investigate differences and changes in the level of pain among patients in relation to orthodontic microimplant treatments. Forty microimplants were applied to the maxilla as skeletal anchors in the orthodontic treatment. The visual analog scale (VAS) was used to evaluate the patients’ perception of pain during this new modality treatment. The premolar extraction VAS core was used as a baseline for the complete orthodontic procedure. The mean VAS score was 35.8 mm at 24 h after premolar extraction. The me... Odontology journals http://www.medworm.com/rss/comments.php?id=4415445 Thu, 27 Jan 2011 01:14:24 +0100 4415445 http://www.medworm.com/index.php?rid=4415444&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fp21l2152405h0193%2F In conclusion, exposure to XeroLacer decreased microleakage into cavities restored with the compomer. Content Type Journal ArticlePages 49-54DOI 10.1007/s10266-010-0149-9Authors Ascensión Vicente, Orthodontic Teaching Unit, Dental Clinic, The University of Murcia, Hospital Morales Meseguer, 2a planta C/Marqués de los Vélez, s/n, 30008 Murcia, SpainAntonio J. Ortiz, Integral Pediatric Dentistry Teaching Unit, Dental Clinic, The University of Murcia, Murcia, SpainPablo L. Parra, Conservative Dentistry Teaching Unit, Dental Clinic, The University of Murcia, Murcia, SpainJosé L. Calvo, Integral Adult Dentistry Teaching Unit, Dental Clinic, The University of Murcia, Murcia, SpainFernando Chiva, Conservative Dentistry Teaching Unit, Dental Clinic, The University of Murcia, Murcia, Sp... Odontology journals http://www.medworm.com/rss/comments.php?id=4415444 Thu, 27 Jan 2011 01:14:24 +0100 4415444 http://www.medworm.com/index.php?rid=4415447&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F6451h47x06375101%2F Abstract  The aim of this study was to investigate the root and canal morphology of maxillary first and second premolars in Indians by a modified canal staining and tooth clearing technique. Maxillary first (350) and second (350) premolars were collected, and the morphology and number of roots analyzed. After cleaning, the teeth were immersed in India ink and placed in a hyperbaric oxygen chamber at 0.6 MPa for 2 h. The teeth were then demineralized and cleared. Digital images of the teeth were examined under magnification to evaluate the number of root canals, root canal system configurations, number of apical foramina, and intercanal communications. Root canal configurations were identified based on Vertucci’s classification and Gulabivala’s additional classes. The mo... Odontology journals http://www.medworm.com/rss/comments.php?id=4415447 Thu, 27 Jan 2011 01:14:21 +0100 4415447 http://www.medworm.com/index.php?rid=4415446&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Feu76863707257004%2F This study evaluated the effect of two silanes (3-trimethoxysilylpropylmethacrylate (MPS) and 3-trimethoxysilylpropylmethacrylate/4-methacryloyloxyethyl trimellitate anhydride methyl methacrylate (MPS/4-META) on the adhesion of two resin-based cements (SuperBond and Panavia F 2.0) to Y-TZP ceramic and compared several protocols with those indicated by the manufacturer of each of these cements. Disks of Y-TZP ceramic (LAVA, 3M ESPE) (n = 60) were divided into six experimental groups (n = 10 per group) and treated as follows: (1) silica coating (SC) + MPS silane + SuperBond; (2) SC + MPS/4-META + silane + SuperBond); (3) SC + MPS silane + Panavia F 2.0); (4) SC + MPS/4-META silane + Panavia F 2.0); (5) no conditioning + MPS/4-META silane + Super-Bond (SuperBond instructions); and (6) 50... Odontology journals http://www.medworm.com/rss/comments.php?id=4415446 Thu, 27 Jan 2011 01:14:21 +0100 4415446 http://www.medworm.com/index.php?rid=4415448&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fduu546u004x764q4%2F This report describes an episode of malignant hyperthermia (MH) in a 53-year-old Japanese man during general anesthesia that was triggered by isoflurane and succinylcholine. His past history and family history were unremarkable. From our analysis of ten exons, he had no recognizable mutation in the ryanodine receptor gene, but compatible with his MH reaction, he showed positive sensitivity to the Ca-induced Ca-release test. Histochemical and electron microscopic studies of muscle biopsy tissue demonstrated unusual “ring fibers,” which have never before been reported to be associated with MH. The presence of ring fibers in this patient might indicate muscle regeneration, suggesting a recovery process from the MH episode. Content Type Journal ArticlePages 101-104DOI 10.1007/s10... Odontology journals http://www.medworm.com/rss/comments.php?id=4415448 Thu, 27 Jan 2011 01:14:20 +0100 4415448 http://www.medworm.com/index.php?rid=4415450&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Flu43812963501qm0%2F Abstract  Orthodontic anchorages have recently been reinforced by newly developed mini-implants. The aim of the present study was to investigate the mechanical strengths of infrazygomatic mini-implants. We measured the insertion torque and pull-out strength of three brands of infrazygomatic mini-implants (AbsoAnchors, Bioray, and Lomas). All three mini-implants were 2 mm in diameter, and five of each brand were manually driven 6 mm into artificial bone. Significant differences among the brands were investigated with Kruskal-Wallis tests. We found no significant relationship between insertion torque and pull-out strength in any individual brand. Among the three brands of infrazygomatic mini-implants, we found no significant difference in mechanical strength. The design of an... Odontology journals http://www.medworm.com/rss/comments.php?id=4415450 Thu, 27 Jan 2011 01:14:19 +0100 4415450 http://www.medworm.com/index.php?rid=4415449&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fv42577454vh166h6%2F Abstract  The purpose of this study was to ascertain the effects of tooth bleaching on the shear bond strength of orthodontic brackets rebonded with a self-etching adhesive system. A total of 39 premolars were collected and divided into three equal groups: in group 1 bracket bonding was performed without bleaching treatment; specimens in group 2 were bonded immediately after bleaching; and group 3 teeth were bleached, then immersed in artificial saliva and left for 7 days before bonding. The shear bond strength was measured, with the bonding/debonding procedures repeated once after the first debonding, and the bracket/adhesive failure modes were evaluated by the adhesive remnant index after each debonding. Excepting the mean shear bond strength for group 2 after the first d... Odontology journals http://www.medworm.com/rss/comments.php?id=4415449 Thu, 27 Jan 2011 01:14:19 +0100 4415449 http://www.medworm.com/index.php?rid=4415451&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F43t843158132g312%2F Abstract  Previously, sex differences among the various tooth types in Japanese skulls were examined to facilitate choosing an implant diameter similar to the cervical diameter of each tooth, and it was found that mesiodistal diameters at the cementoenamel junction were narrower in women than in men. Also interesting and relevant to the selection of implant diameter is the possible existence of racial differences in diameters at the cementoenamel junction. The purpose of this research was to test the hypothesis that the diameter at the cementoenamel junction of the tooth differs in humans of different races. We compared 106 skulls of unknown sex collected from South Asia with the skulls of Japanese women. Our conclusions are as follows: (1) Except for the lower canine, no s... Odontology journals http://www.medworm.com/rss/comments.php?id=4415451 Thu, 27 Jan 2011 01:14:18 +0100 4415451 http://www.medworm.com/index.php?rid=3785083&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F92r4518551221285%2F Abstract  The purpose of this study was to clarify the influence of an experimental palatal plate on the mandibular position during continuous [n] phonation and at the physiologic rest position. Twenty healthy dentulous volunteers (10 males and 10 females, mean age of 24.4 years) were investigated. Three kinds of experimental plate with a thickness of 3 mm, 5 mm, and 8 mm were fabricated and used for each subject. The mandibular position was recorded by a K7 kinesiograph during continuous [n] phonation and at the physiologic rest position under normal conditions and when the three kinds of plate with different thickness were worn separately. The results showed that the mean interocclusal dimensions during continuous [n] phonation were 0.5 mm vertically and 0.4 mm anteropost... Odontology journals http://www.medworm.com/rss/comments.php?id=3785083 Fri, 23 Jul 2010 13:50:26 +0100 3785083 http://www.medworm.com/index.php?rid=3785084&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F16m7341656605416%2F Abstract  The purpose of this study was to evaluate the microtensile bond strength (μTBS) of an experimental adhesive system containing calcium chloride (CaCl2), synthetic peptides derived from dentin matrix protein 1 (DMP1: pA and pB), and hydroxyapatite experimentally developed for direct pulp capping to human dentin. Clearfil SE Bond/Primer (SEP) and Bond (SEB) were used for each experimental group as the matrix agents. Experimental self-etching primers included: primer-I, SEP containing 10 wt% CaCl2, and primer-II, SEP containing a 10 wt% compound of pA and pB. The experimental bonding agent was a mixture of SEB and 10 wt% hydroxyapatite. Specimens were divided into five experimental groups, including the control, according to the mode of primer application. Primer-I wa... Odontology journals http://www.medworm.com/rss/comments.php?id=3785084 Fri, 23 Jul 2010 13:50:25 +0100 3785084 http://www.medworm.com/index.php?rid=3785086&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fyl6355m842728l38%2F Abstract  The present study investigated which cognitive characteristics, including cancer phobia, self-efficacy, pain-related catastrophizing, and anxiety sensitivity, affect burning mouth syndrome (BMS) symptoms in the Japanese population. A total of 46 BMS patients (44 women and 2 men; mean age, 59.98 ± 9.57 years; range, 30–79 years) completed a battery of questionnaires, including measures of pain severity, oral-related quality of life (QOL), stressresponse, pain-related catastrophizing, self-efficacy, anxiety sensitivity, and tongue cancer phobia. The Pain Catastrophizing Scale (PCS), General Self-Efficacy Scale (GSES), and Anxiety Sensitivity Index (ASI) scores in the BMS patients were compared with the scores of Japanese healthy participants (PCS, n = 449; GSES, n... Odontology journals http://www.medworm.com/rss/comments.php?id=3785086 Fri, 23 Jul 2010 13:50:24 +0100 3785086 http://www.medworm.com/index.php?rid=3785085&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F0327775477115g13%2F Abstract  The purpose of this noninferiority trial was to compare postoperative pain relief after one-visit root canal therapy (ORCT) with a pulpotomy performed with a new endodontic calcium-enriched mixture cement (PCEM) in human permanent molars with irreversible pulpitis. A total of 407 selected patients were randomly allocated into the ORCT group (n = 202) or the PCEM group (n = 205). Numerical Rating Scale questionnaires were used to record pain intensity (PI) by the patients during the first 7 days after treatment. While there was no statistically significant difference in the mean PI at baseline between the two study groups (P = 0.45), changes in mean PI were significantly different between them (P < 0.001). In the ORCT group, pain relief was achieved after 36 h [95... Odontology journals http://www.medworm.com/rss/comments.php?id=3785085 Fri, 23 Jul 2010 13:50:24 +0100 3785085 http://www.medworm.com/index.php?rid=3791910&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fx1028255066p3477%2F Abstract  Cementum is mineralized tissue with collagen fibrils as its major organic component, and it can be roughly classified into acellular and cellular cementum. The latter generally consists of a stack of cellular intrinsic fiber cementum layers, in which intensely and weakly stained lamellae (each about 2.5 μm thick) alternate in light microscopic observations. It has been suggested that the alternate lamellar pattern results from periodic changes of the intrinsic fiber arrangement, but owing to the difficulty of observing the fibril arrangement three dimensionally, details were not understood until recently. The NaOH-maceration method has been developed to overcome this difficulty. For the past two decades, we have studied the structure and development of cementum b... Odontology journals http://www.medworm.com/rss/comments.php?id=3791910 Fri, 23 Jul 2010 13:50:23 +0100 3791910 http://www.medworm.com/index.php?rid=3791909&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fp2320g715752181k%2F Abstract  In addition to individual-based prevention strategies, the burden of oral cancer could be decreased by controlling its national level determinants. Population-based studies have found smoking, drinking, and wealth to be associated with oral cancer incidence and mortality rates. However, these studies merely reported trends, or did not account for confounders or for intercorrelation between predictor variables. This ecologic study sought to investigate oral cancer determinants at the country level. The male, age-standardized mortality rate was the dependent variable. The explanatory variables, obtained from reliable international agencies, were life expectancy, frequency of physicians, gross national product (GNP), expenditure on health, literacy rate, human immuno... Odontology journals http://www.medworm.com/rss/comments.php?id=3791909 Fri, 23 Jul 2010 13:50:23 +0100 3791909 http://www.medworm.com/index.php?rid=3785087&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fe6378g01897r888l%2F Abstract  All forms of asbestos are proven human carcinogens. All forms of asbestos cause malignant mesothelioma, lung, laryngeal, and ovarian cancers, and may cause gastrointestinal and other cancers. No exposure to asbestos is without risk, and there is no safe threshold of exposure to asbestos. Nonetheless, a large number of countries still use, import, and export asbestos and asbestos-containing products. And still today in many countries that have banned other forms of asbestos, the so-called “controlled use” of chrysotile asbestos continues to be permitted, an exemption that has no basis in medical science but rather reflects the political and economic influence of the asbestos mining and manufacturing industry. To protect the health of all people in the world —... Odontology journals http://www.medworm.com/rss/comments.php?id=3785087 Fri, 23 Jul 2010 13:50:22 +0100 3785087 http://www.medworm.com/index.php?rid=3785088&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F6416683144340971%2F Abstract  Our aim was to evaluate the influence of different application parameters on microtensile bond strength (μTBS) of an “all in one” water-based self-etching primer/adhesive to dentin. Extracted human third molars had their crowns transversally sectioned next to the dentinoenamel junction. Prompt-L-Pop adhesive was applied using five modes: (1) following the manufacturer’s instructions (MI); (2) after 36% H3PO4 etching (15 s) (AG); (3) after H3PO4 etching and 5% NaOCl (2 min) with constant agitation (HG); (4) as a double layer (DL); and (5) for double the application time (DT). Resin build-ups were constructed with Tetric Ceram. After storage for 24 h, 6 months, or 12 months in water at 37°C, the specimens were vertically sectioned into beams (cross-sectional ... Odontology journals http://www.medworm.com/rss/comments.php?id=3785088 Fri, 23 Jul 2010 13:50:21 +0100 3785088 http://www.medworm.com/index.php?rid=3791911&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fd249735h71437118%2F Abstract  Cervical lymph node (CLN) metastasis from oral cancer correlates with poor prognosis. Therefore, accurate assessment of CLN status is crucial in treatment planning. However, there are few reports focusing on CLN metastasis from tongue cancer. Further, the growth and progress of the tumor are known to be profoundly related to histological malignancy, tumor angiogenesis, and lymphangiogenesis. Thus, this study aimed to identify predictive factors for CLN metastasis in tongue squamous cell carcinoma (SCC). Initial biopsy specimens obtained from 30 patients with tongue SCC were examined to evaluate histological malignancy according to Anneroth’s classification. In addition, blood vessel density, lymph vessel density, and lymphatic invasion in the tumor were evaluate... Odontology journals http://www.medworm.com/rss/comments.php?id=3791911 Fri, 23 Jul 2010 13:50:20 +0100 3791911 http://www.medworm.com/index.php?rid=3791913&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fl0v5428h3602u541%2F This study evaluated the influence of scanning method, abutment position, and preparation angle on the vertical seal of three-unit posterior zirconia structures. Sixty differently angled metallic models were machined to receive 30 bridge frameworks. For each preparation type, half of the structures were waxed-up and digitized, whereas the other half were computer-designed after the abutments were scanned. Once milled, the samples were cemented in standard fashion. Misfit was assessed by scanning electron microscopy. Three-way analysis of variance showed significant differences. Computer-designed structures achieved the highest accuracy (P < 0.0001). No significant differences were recorded concerning the abutment position and convergence angle. All discrepancy values were within t... Odontology journals http://www.medworm.com/rss/comments.php?id=3791913 Fri, 23 Jul 2010 13:50:19 +0100 3791913 http://www.medworm.com/index.php?rid=3791912&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F560218883168w208%2F Abstract  To investigate the stimulating effect of endodontic medications on the mRNA expression of some osteogenesis-related genes associated with reparative dentinogenesis and hard-tissue formation, human dental pulp cells (D824 cells) were treated with calcium hydroxide (Ca (OH)2), formocresol, or guaiacol. The effect on growth was determined by growth curves of D824 cells treated for 1–3 days with 0.03–0.3 mM Ca (OH)2, 0.0007%–0.0014% formocresol, or 0.24–2.43 mM guaiacol. The mitotic activity of individual cells and the mRNA expression of the osteogenesis-related genes for alkaline phosphatase (ALP), type I collagen (COL-1), and bone sialoprotein (BSP) in the cells treated for 24 h with the same concentrations of the medications as described above were determined... Odontology journals http://www.medworm.com/rss/comments.php?id=3791912 Fri, 23 Jul 2010 13:50:19 +0100 3791912 http://www.medworm.com/index.php?rid=3791914&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F4g176l906u706218%2F Abstract  A cemental tear is a special kind of root fracture that may cause rapid and localized periodontal destruction. Most cemental tears have been reported on bicuspids and incisors. Here we present a case of cemental tears on both the right mandibular first and second molars. The patient was a 72-year-old man who showed gingival swelling and a deep pocket over his right mandibular second molar as well as a deep periodontal pocket on the distolingual aspect of the first molar. During exploratory flap surgery, a detached root fragment on the mesial side of the second molar and a small root fragment on the lingual surface of the first molar were found and removed for biopsy. After histopathological examination, both root fragments were confirmed to be cemental tears. The ... Odontology journals http://www.medworm.com/rss/comments.php?id=3791914 Fri, 23 Jul 2010 13:50:18 +0100 3791914 http://www.medworm.com/index.php?rid=3791915&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fb718m2935x326g13%2F We report a case of polyostotic craniofacial fibrous dysplasia in which two-jaw orthognathic surgery was performed using a navigation system with the Le Fort 1 osteotomy procedure. A 29-year-old woman presented with swelling and asymmetry on the right side of her face. Craniofacial fibrous dysplasia on the right side had been previously diagnosed, and she had undergone conservative surgery several times before. The disease extended to the right mandible, maxilla, and zygomatic, temporal frontal, and orbital areas, including the skull base. We first performed conservative contouring around the frontal and orbital areas, and then Le Fort I osteotomy and sagittal split ramus osteotomy to correct the asymmetry and cant of the occlusal plane. A passive infrared navigation system (Vector ... Odontology journals http://www.medworm.com/rss/comments.php?id=3791915 Fri, 23 Jul 2010 13:50:17 +0100 3791915 http://www.medworm.com/index.php?rid=3785089&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ft62277322h727760%2F Abstract  A pink retained left mandibular first molar without carious lesions was diagnosed in a healthy 12-year-old girl presenting normal clinical tests. An orthopantomogram failed to detect other retained teeth. Both periapical radiography and computed tomography showed the absence of a periodontal ligament space in the bifurcation area and the presence of radiolucency or calcifications in the pulp cavity. The coronal part of the removed tooth was subjected to histological and immunohistochemical analysis using anti-PCNA (proliferation marker) and anti-p53 (apoptosis marker) antibodies. Root surfaces were observed by scanning electron microscopy. The pink color of the molar reflected the extension of resorptive tissue into the clinical crown and the underlining prolifera... Odontology journals http://www.medworm.com/rss/comments.php?id=3785089 Fri, 23 Jul 2010 13:50:17 +0100 3785089 http://www.medworm.com/index.php?rid=3791916&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fjxp4h64148755025%2F Abstract  Nightguard vital bleaching (NGVB) has been applied as a safe and effective bleaching procedure with a wide variety of commercial products consisting of carbamide peroxide-based gels, but there have been few reports on tooth bleaching for tetracycline-stained teeth. The purpose of this study was to evaluate the bleaching effects on teeth discolored by tetracycline with 3 months’ active treatment, and to investigate the participant satisfaction, the shade stability, and the post-treatment side effects 2 years after the treatment. A custom-made tray with Polanight 10% carbamide peroxide gel was applied to both the incisal and premolar teeth (10 teeth of each participant), and the participants were directed to wear the tray every night over the course of the 3 month... Odontology journals http://www.medworm.com/rss/comments.php?id=3791916 Fri, 23 Jul 2010 13:50:16 +0100 3791916 http://www.medworm.com/index.php?rid=3277248&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa78q5q482428225p%2F We examined the abrasiveness of glycine powders with particle diameters of 63 and 100 μm by measuring the depth and volume of defects produced during air polishing of human dentin. A total of 36 extracted human teeth were embedded in acrylic resin. The resin blocks were polished until the dentin surfaces were exposed. The nozzle of an air polisher was mounted 4 mm from the dentin surface, and the dentin surface was treated for 5 s at one of two angles of incidence (45° or 90°). Three materials were used in the polishing process: NaHCO3 powder with a mean particle diameter of 100 μm (Handy Jet Powder), glycine powder with a mean particle diameter of 63 μm (Handy Jet Powder PMTC), and glycine powder with a mean particle diameter of 100 μm (Handy Jet Powder Recall). The defect dep... Odontology journals http://www.medworm.com/rss/comments.php?id=3277248 Mon, 15 Feb 2010 06:40:16 +0100 3277248 http://www.medworm.com/index.php?rid=3277247&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa686u7338r8l1830%2F Abstract  Dysgeusia causes a decrease in appetite, and it is one of the major factors in undernutrition. Dysgeusia is elicited by numerous causes, and in many cases it is still difficult to treat the various symptoms complained of by patients. We herein report a case in which dysgeusia was improved by transient cooling of the mouth. Content Type Journal ArticleCategory Case ReportDOI 10.1007/s10266-009-0110-yAuthors Rie Fujiyama, Nagasaki University Integrative Sensory Physiology, Graduate School of Biomedical Sciences 1-7-1 Sakamoto Nagasaki 852-8588 JapanShingo Ishitobi, Nagasaki University Hospital of Medicine and Dentistry Special Care Dentistry Nagasaki JapanKeiko Honda, Nagasaki University Hospital of Medicine and Dentistry Special Care Dentistry Nagasaki JapanYukio ... Odontology journals http://www.medworm.com/rss/comments.php?id=3277247 Mon, 15 Feb 2010 06:40:16 +0100 3277247 http://www.medworm.com/index.php?rid=3277251&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F9060lv857x646671%2F Abstract  We found few studies on the association between maxillary sinus size and malocclusion in an electronic search using PubMed. The purpose of this study was to investigate maxillary sinus size in different malocclusion groups and the association between maxillary sinus size and dentofacial morphology by the use of lateral cephalometric radiographs. A total of 120 lateral cephalograms were used. These radiographs were derived from subjects with skeletal Class I, Class II, and Class III malocclusions, classified on the basis of the A-N-B angle. Each malocclusion group consisted of 20 boys and 20 girls ranging in age from 12 to 16 years. Two linear measurements and three area measurements were made to evaluate maxillary sinus size, and four angular and eight linear meas... Odontology journals http://www.medworm.com/rss/comments.php?id=3277251 Mon, 15 Feb 2010 06:40:15 +0100 3277251 http://www.medworm.com/index.php?rid=3277250&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F950x27334288h3w0%2F We report on Rabson-Mendenhall syndrome in two siblings and briefly review the literature. Content Type Journal ArticleCategory Case ReportDOI 10.1007/s10266-009-0106-7Authors Renuka J. Bathi, Sharda University (Deemed University) Department of Oral Medicine & Radiology, School Of Dental Sciences Plot #32-34, Knowledge Park III Greater Noida, U. P. 201306 IndiaSameena Parveen, S.B. Patil Dental College Department of Oral Medicine and Radiology Bidar Karnataka IndiaSunil Mutalik, S.D.M. College of Dental Sciences & Hospital Department of Oral Medicine and Radiology Dharwad, Karnataka IndiaReema Rao, Terna Dental College & Hospital Department of Oral Medicine and Radiology Kargar, Navi Mumbai India Journal OdontologyOnline ISSN 1618-1255Print ISSN 1618-1247 Journal Volume Vo... Odontology journals http://www.medworm.com/rss/comments.php?id=3277250 Mon, 15 Feb 2010 06:40:15 +0100 3277250 http://www.medworm.com/index.php?rid=3277249&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Frt88317504757h38%2F Abstract  The purpose of this study was to demonstrate a micro-computed tomography (CT) method for observations of the mouse embryo. At 13.0 days post-coitum, mouse embryos were fixed in 4% paraformaldehyde for 24 h and stained en bloc by osmium tetroxide overnight. The embryos were then embedded in paraffin using standard methods for 24 h. Specimens were analyzed by micro-CT and image processing was performed. Organs containing nervous and blood systems could be viewed as a result of different osmium-staining densities. The trigeminal ganglion was imaged using three-dimensional techniques. Observation of the embryo was possible by micro-CT with osmium tetroxide staining. Content Type Journal ArticleCategory Original ArticleDOI 10.1007/s10266-009-0112-9Authors Hidekazu ... Odontology journals http://www.medworm.com/rss/comments.php?id=3277249 Mon, 15 Feb 2010 06:40:15 +0100 3277249 http://www.medworm.com/index.php?rid=3277252&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fq52l4n1803177238%2F This study aimed to investigate the effectiveness of systemically available antiangiogenic gene therapy targeting vascular endothelial growth factor (VEGF), which is one of the most important angiogenesis accelerators. We administered a soluble form of VEGF receptor-expressing gene incorporated into adenovirus (AdVEGF-ExR) intraperitoneally to nude mice to which oral cancer cell lines (SAS, HSC-3, and Ca9-22) had been transplanted subcutaneously in vivo to inhibit angiogenesis and tumor proliferation. Then, we measured tumor volumes over time, and tumors were enucleated and examined histopathologically and immunohistologically at 28 days after AdVEGF-ExR administration. Compared to the controls to which we administered AdLacZ or saline, significant antiproliferative effects were obse... Odontology journals http://www.medworm.com/rss/comments.php?id=3277252 Mon, 15 Feb 2010 06:40:13 +0100 3277252 http://www.medworm.com/index.php?rid=3277255&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F751305611g408618%2F In conclusion, most of our results quantitatively support previously reported findings in imaging, surgical, and histopathological studies of TMJ internal derangement. We suggest that our measure of disc position of the TMJ would be useful to assess the status and response to treatment of internal derangements of the TMJ. Content Type Journal ArticleCategory Original ArticleDOI 10.1007/s10266-009-0115-6Authors Raweewan Arayasantiparb, The Nippon Dental University Quantitative Diagnostic Imaging Program, Graduate School of Life Dentistry at Niigata Nippon JapanMakoto Tsuchimochi, The Nippon Dental University Quantitative Diagnostic Imaging Program, Graduate School of Life Dentistry at Niigata Nippon Japan Journal OdontologyOnline ISSN 1618-1255Print ISSN 1618-1247 Journal ... Odontology journals http://www.medworm.com/rss/comments.php?id=3277255 Mon, 15 Feb 2010 06:40:11 +0100 3277255 http://www.medworm.com/index.php?rid=3277254&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fpw15x26283k20084%2F This study was undertaken to elucidate significant risk factors associated with spontaneous pain in patients with untreated oral squamous cell carcinoma (OSCC) before treatment. A total of 113 patients (82 men, 31 women; median age, 64 years) with untreated OSCC were examined. Correlations between spontaneous pain in the primary site and sex, age, primary site, TN stage, clinical stage, and clinical growth type of cancer (exophytic or endophytic), as well as the degree of histological differentiation and the histological mode of invasion were evaluated. At the initial examination, 42 (37%) of patients had spontaneous pain. In univariate statistical analyses, reported pain correlated significantly with patient age and the clinical growth type of the cancer, as well as with the degree ... Odontology journals http://www.medworm.com/rss/comments.php?id=3277254 Mon, 15 Feb 2010 06:40:11 +0100 3277254 http://www.medworm.com/index.php?rid=3277253&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fy57636248685x855%2F In conclusion, the customized HA/PLLA tray was easily adapted to the mandible, and fine bone quality was obtained. These cases show that this tray system contributed to functional oral rehabilitation with dental implants. Content Type Journal ArticleCategory Case ReportDOI 10.1007/s10266-009-0111-xAuthors Akira Matsuo, Tokyo Medical University Department of Oral and Maxillofacial Surgery 6-7-1 Nishishinjuku, Shinjuku-ku Tokyo 160-0023 JapanHiroshige Chiba, Tokyo Medical University Department of Oral and Maxillofacial Surgery 6-7-1 Nishishinjuku, Shinjuku-ku Tokyo 160-0023 JapanHidetoshi Takahashi, Tokyo Medical University Department of Oral and Maxillofacial Surgery 6-7-1 Nishishinjuku, Shinjuku-ku Tokyo 160-0023 JapanJun Toyoda, Tokyo Medical University Department of Oral and Maxil... Odontology journals http://www.medworm.com/rss/comments.php?id=3277253 Mon, 15 Feb 2010 06:40:11 +0100 3277253 http://www.medworm.com/index.php?rid=3277259&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F5234w6860462m773%2F Abstract  Understanding outcomes of the interaction between a dental material and tooth tissue is important in terms not only of biocompatibilty but also of the potential for the material to modulate the response of the tissue. This interaction is influenced by many factors, including the chemistry of the material and any of its eluted components or degradation products, and the manner in which the tissue responds to these agents. Past studies of this interaction have primarily been aimed at identifying cytotoxic effects. More recently, investigations have focused on specific cellular responses, and in particular, on understanding how the materials themselves actually may contribute to regenerative processes in the tooth. Recent work has demonstrated the solubilization of p... Odontology journals http://www.medworm.com/rss/comments.php?id=3277259 Mon, 15 Feb 2010 06:40:09 +0100 3277259 http://www.medworm.com/index.php?rid=3277258&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fm073722534206256%2F Content Type Journal ArticleCategory EditorialDOI 10.1007/s10266-010-0119-2Authors Yukio Miyagawa, The Nippon Dental University School of Life Dentistry at Niigata The Society of The Nippon Dental University Division of Biomaterials, Advanced Research Center Niigata JapanMakoto Tsuchimochi, The Nippon Dental University School of Life Dentistry at Niigata Department of Oral and Maxillofacial Radiology 1-8 Hamaura-cho, Chuo-ku, Niigata Niigata 951-8580 Japan Journal OdontologyOnline ISSN 1618-1255Print ISSN 1618-1247 Journal Volume Volume 98 Journal Issue Volume 98, Number 1 / February, 2010 (Source: Odontology) Odontology journals http://www.medworm.com/rss/comments.php?id=3277258 Mon, 15 Feb 2010 06:40:09 +0100 3277258 http://www.medworm.com/index.php?rid=3277257&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fw43t35167j551286%2F Abstract  Fungi comprise a minor component of the oral microbiota but give rise to oral disease in a significant proportion of the population. The most common form of oral fungal disease is oral candidiasis, which has a number of presentations. The mainstay for the treatment of oral candidiasis is the use of polyenes, such as nystatin and amphotericin B, and azoles including miconazole, fluconazole, and itraconazole. Resistance of fungi to polyenes is rare, but some Candida species, such as Candida glabrata and C. krusei, are innately less susceptible to azoles, and C. albicans can acquire azole resistance. The main mechanism of high-level fungal azole resistance, measured in vitro, is energy-dependent drug efflux. Most fungi in the oral cavity, however, are present in multis... Odontology journals http://www.medworm.com/rss/comments.php?id=3277257 Mon, 15 Feb 2010 06:40:09 +0100 3277257 http://www.medworm.com/index.php?rid=3277256&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F64175360612048t7%2F Abstract  To determine the influence of oral status on halitosis, the relationship between halitosis and periodontopathic bacteria present in plaque on the tongue and the subgingival sulcus was examined in 62 periodontally healthy adults. Halitosis indicators used were the organoleptic score; gas chromatography results [total volatile sulfur compounds (VSCs) = H2S + CH3SH + (CH3)2S]; Halimeter values; and the results of three clinical tests, plaque control record (PlCR), plaque index (PlI), and tongue coat status. Significant correlations with organoleptic scores was observed for PlCR, PlI, tongue coat status, VSC amounts, and Halimeter values, indicating that halitosis in periodontally healthy subjects tended to originate from tongue plaque deposits. Polymerase chain reacti... Odontology journals http://www.medworm.com/rss/comments.php?id=3277256 Mon, 15 Feb 2010 06:40:09 +0100 3277256 http://www.medworm.com/index.php?rid=3277260&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fvx63818h4h000218%2F Abstract  The purpose of this study was to determine the effects of contamination with smoker’s and non-smoker’s saliva on the bond strength of resin composite to superficial dentin using different adhesive systems. The interfacial structure between the resin and dentin was evaluated for each treatment using environmental scanning electron microscopy (ESEM). Freshly extracted human molars were ground with 600-grit SiC paper to expose the superficial dentin. Adhesives [One-Up-Bond-F-Plus (OUFP) and Adper-Prompt-L-Pop (APLP)] and resin composite (TPHSpectrum) were bonded to the dentin (n = 8/group, 180 total specimens) under five surface conditions: control (adhesive applied following manufacturers’ instructions); saliva, then 5-s air dry, then adhesive; adhesive, saliva... Odontology journals http://www.medworm.com/rss/comments.php?id=3277260 Mon, 15 Feb 2010 06:40:08 +0100 3277260 http://www.medworm.com/index.php?rid=2661550&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F301v750777047838%2F Abstract  This case report describes the orthodontic treatment of an 18-year-old female patient with Class II malocclusion with dentoskeletal bimaxillary protrusion. An acceptable treatment result was obtained with a four first premolar extraction and an additional maxillary two second molar extraction plan. Standard edgewise appliances were placed after the premolars were extracted. A positive soft tissue response to treatment was achieved, and the patient’s profile was improved, with a reduction of lip protrusion and mentalis strain. Dentally, the interincisal angle improved significantly as both the maxillary and mandibular incisors were uprighted after space closure. The occlusion remained stable during 2 years of follow-up. Content Type Journal ArticleCategory Case... Odontology journals http://www.medworm.com/rss/comments.php?id=2661550 Tue, 28 Jul 2009 18:47:25 +0100 2661550 http://www.medworm.com/index.php?rid=2661553&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F945k51420530384r%2F Abstract  Angiotensin not only raises blood pressure and modifies body fluids and electrolytes but also induces differentiation and proliferation of fibroblasts in the circulatory system in order to repair damage. The purpose of the present study was to observe the influence of the addition of angiotensin II (AngII) or nifedipine (NIF) alone or both sequentially on proliferative activity, the intracellular Ca2+ concentration ([Ca2+]i), and the inositol-1,4,5-triphosphate (IP3) level in cultivated human gingival fibroblasts. Addition of 10−8−10−4 M NIF or 10−5−10−4 M AngII alone increased the proliferation of cultivated gingival fibroblasts, and the interaction of NIF and AngII suppressed proliferation. Addition of AngII alone increased [Ca2+]i, with a peak 60 s af... Odontology journals http://www.medworm.com/rss/comments.php?id=2661553 Tue, 28 Jul 2009 18:47:24 +0100 2661553 http://www.medworm.com/index.php?rid=2661552&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fr7178n291r583770%2F Abstract  We investigated root and canal morphology of permanent mandibular molar teeth in a Ugandan population. Mandibular first (n = 224) and second (n = 223) molars were collected from patients visiting dental clinics in Kampala and prepared by a clearing technique. An endodontic access cavity was prepared in each tooth. The teeth were consecutively immersed in 5% sodium hypochlorite, 10% nitric acid, and 99% methyl salicylate. India ink was coronally injected into the pulp chamber and withdrawn apically by suction. The teeth were viewed under a magnifying lens and the numbers of root canals and their configurations, lateral canals, intercanal communications, and multiple apical foramina were recorded, along with the number of roots and their morphology. Student’s t test... Odontology journals http://www.medworm.com/rss/comments.php?id=2661552 Tue, 28 Jul 2009 18:47:24 +0100 2661552 http://www.medworm.com/index.php?rid=2661551&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F2x2264w430300883%2F Abstract  The aim of this study was to evaluate the characteristics of new-generation light-emitting diode (LED) units in comparison with the conventional tungsten-halogen, plasma arc, and first-generation LED units reported in our previous study. The irradiance of light from new-generation LED units, the temperature rise of the bovine enamel surface, and the depth of cure of composites exposed to each unit were investigated. The irradiances in the range 400–515 nm emitted from the new-generation LED units were greater than those from the first-generation LED units. The temperature increase was 15–25°C for new-generation LED units compared with a typical value of 5°C for the first-generation LED units at 10 s of irradiation. The relationship between the depth of cure ... Odontology journals http://www.medworm.com/rss/comments.php?id=2661551 Tue, 28 Jul 2009 18:47:24 +0100 2661551 http://www.medworm.com/index.php?rid=2661555&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fq87282830594r01h%2F Abstract  We evaluated the effects of two dual-functional primers and a tribochemical surface modification system on the bond strength between an indirect composite resin and gold alloy or titanium. Disk specimens (diameter, 10 mm; thickness, 2.5 mm) were cast from type 4 gold alloy and commercially pure titanium. The specimens were wetground to a final surface finish using 600-grit silicone carbide paper. The specimens were then air-dried and treated using the following four bonding systems: (1) air-abrasion with 50–70 μm alumina, (2) system 1 + alloy primer, (3) system 1 + metal link primer, and (4) tribochemical silica/silane coating (Rocatec). A light-polymerizing indirect composite resin (Ceramage) was applied to each metal specimen and polymerized according to the ... Odontology journals http://www.medworm.com/rss/comments.php?id=2661555 Tue, 28 Jul 2009 18:47:23 +0100 2661555 http://www.medworm.com/index.php?rid=2661554&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F144840541171026r%2F Abstract  Xerostomia (dry mouth) is a common complaint with widespread implications such as impaired quality of life, oral pain, and numerous oral complications. There are a variety of salivary and nonsalivary causes of xerostomia, the most frequent being medication side effects and systemic disorders. A systematic approach should be employed to determine the etiology of this condition, with distinctions made between patients with subjective complaints of xerostomia alone and those with measurable salivary gland dysfunction. Management is multidisciplinary and multimodal. This review summarizes the current literature on the etiology, diagnosis, and complications of xerostomia, and on the management of patients with xerostomia. Content Type Journal ArticleCategory Review A... Odontology journals http://www.medworm.com/rss/comments.php?id=2661554 Tue, 28 Jul 2009 18:47:23 +0100 2661554 http://www.medworm.com/index.php?rid=2661556&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F8916p48651642672%2F Abstract  Atherosclerosis is an important component of coronary heart disease (CHD), which is the leading cause of death worldwide, including in Japan. Because atherosclerotic processes are typified by chronic inflammatory responses, which are similar to those elicited by chronic infection, the role of infection in promoting or accelerating atherosclerosis has received considerable focus. Increasing evidence supports the notion that periodontitis is associated with increased risk of atherosclerosis through dysfunction of endothelial cells induced by either periodontopathic bacteria or their products, or inflammatory mediators derived from infected periodontal tissue. Here we review whether periodontitis represents a risk factor for CHD or atherosclerosis, particularly in a ... Odontology journals http://www.medworm.com/rss/comments.php?id=2661556 Tue, 28 Jul 2009 18:47:22 +0100 2661556 http://www.medworm.com/index.php?rid=2661557&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F0755184110128733%2F Abstract  Bone has the capacity to regenerate in response to injury. During distraction osteogenesis, the renewal of bone is enhanced by gradual stretching of the soft connective tissues in the gap area between two separated bone segments. This procedure has received much clinical attention as a way to correct congenital growth retardation of bone tissue or to generate bone to fill skeletal defects. The process of bone regeneration involves a complex system of biological changes whereby mechanical stress is converted into a cascade of signals that activate cellular behavior resulting in (enhanced) formation of bone. Over the last decade, significant progress has been made in understanding the bone regeneration process during distraction osteogenesis. The mechanical and biol... Odontology journals http://www.medworm.com/rss/comments.php?id=2661557 Tue, 28 Jul 2009 18:47:21 +0100 2661557 http://www.medworm.com/index.php?rid=2399878&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fj41447475p540598%2F Abstract  With the specific aim of the examination of tissue-damage and repair of surgically exposed pulp and periapical region in rat molar model, 14 female Sprague-Dawley rats were used. The coronal portion of lower first molars was surgically removed and the teeth remained untreated for 3 weeks prior to euthanasia of the animals. During this experimental period, all animals were injected with fluorochrome agents twice at the 12th and 19th days, in order to monitor formation of hard tissues in the exposed pulpal chamber and on the surfaces of cementum and alveolar bone. For histologic examination using microradiography and fluorescent and light microscopy, resin-embedded ground sections and serial decalcified sections were prepared. Observations revealed that: (1) over ha... Odontology journals http://www.medworm.com/rss/comments.php?id=2399878 Wed, 06 May 2009 22:19:33 +0100 2399878 http://www.medworm.com/index.php?rid=2399880&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F2542006w48114v07%2F Abstract  We observed the structure of the tongues of some aquatic mammals in four species of Odontoceti (Stenella coeruleoalba, Lagenorhynchus obliquidens, Tursiops truncatus andMesoplodon stejnegeri) andZalophus californianus californianus using light microscopy (LM) as well as scanning electron microscopy (SEM) and compared the characteristics of the tongue of each animal species. In the four species of Odontoceti, the dorsal surface of the anterior part of the tongues had a smooth surface. However, after removal of the epithelium, slender conical connective tissue cores (CTCs) were densely distributed. At the boundary between the lingual body and the root ofTursiops truncatus, several round vallate-like structures were observed and inLagenorhynchus obliquidens, they had a ... Odontology journals http://www.medworm.com/rss/comments.php?id=2399880 Wed, 06 May 2009 22:19:32 +0100 2399880 http://www.medworm.com/index.php?rid=2399879&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa477135341185726%2F Abstract  It is a well-known fact that theoretically the absorption of new quinolones in the intestinal tract is significantly inhibited as a result of their interaction with metal cations. In order to study the effects of S. M powder, which is frequently used in the department of dentistry, on the tissue transfer of new quinolones, we administered S. M powder in combination with levofloxacin (LVFX) to rabbits and made comparative studies of soft tissue transfer rates. Prior to the initiation of the present study, we confirmed that there is a significant difference in tissue transfer rates of ofloxacin (OFLX) and LVFX, based upon the fact that LVFX is an optical activator of the OFLX. We obtained the following results in this study: 1)  All the samples including t... Odontology journals http://www.medworm.com/rss/comments.php?id=2399879 Wed, 06 May 2009 22:19:32 +0100 2399879 http://www.medworm.com/index.php?rid=2399881&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F132458782ww8k268%2F Abstract  In Begg and KB techniques, the kinetic frictional force generated between their characteristic orthodontic appliances at posterior sites and the orthodontic wire affects the efficiency of tooth movement. We compared the kinetic frictional force between the recent orthodontic appliances for posterior sites: the by-pass loop-KB buccal tube system (loop-KB tube system) and the conventional by-pass clamp-round buccal tube system (clamp-round tube system), and elucidated the frictional properties of the loop-KB tube system. We used 016"/018" round wires (016/018 round) and 022" × 016" ribbon wire (022 ribbon) with anchorage bend/curve applied. The results obtained were as follows: 1)  The kinetic frictional energy was significantly larger in the loop-KB tube... Odontology journals http://www.medworm.com/rss/comments.php?id=2399881 Wed, 06 May 2009 22:19:29 +0100 2399881 http://www.medworm.com/index.php?rid=2399884&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F77990362703u4218%2F Abstract  A study of the modes of occlusion of permanent teeth among Australian Aborigines was conducted at the University of Adelaide Faculty of Dentistry. From 1951 to 1971, 1,708 intra-oral plaster molds were taken at longitudinal changes from 444 Aborigines leading a traditional lifestyle in Northern Australia. Comparisons and analyses then were made with molds of modern Japanese. 1)  In contrast to previous reports, occlusion among Aborigines was found to be characterized by a mixture of psalidodontia (approximately 55%), deep overbite (approximately 30%), and labidodontia, and in general this was similar to that of modern Japanese. 2)  Labidodontia was found in a mere 6.3% of Aborigines and it is believed that previous occlusal studies failed to d... Odontology journals http://www.medworm.com/rss/comments.php?id=2399884 Wed, 06 May 2009 22:19:27 +0100 2399884 http://www.medworm.com/index.php?rid=2399883&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fpj37410278356291%2F This study was carried out at the histochemical, immunohistochemical and scanning electron microscopic levels to elucidate morphology, distribution of elastic fibers and extracellular matrices (type I and III collagens). Specimens were collected from 26 cadavers (18 males and 8 females; 50–90 years of age) which had no muscular disease in the human face. 1.  Observation by macroscopy: A tight attachment between skin and connective tissue was found in the frontal and inferior labial regions, but at the superior labial, orbital and modiolus regions showed loose attachment in the face skin. 2.  Observation by microscopy: The elastic fibers (EF) were located in the epithelium, intercellular substance, connective tissue near muscle fibers, and the perimysium and en... Odontology journals http://www.medworm.com/rss/comments.php?id=2399883 Wed, 06 May 2009 22:19:27 +0100 2399883 http://www.medworm.com/index.php?rid=2399882&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fp40277q302424l34%2F Abstract  Patients sometimes complain of pains and/or discomfort in the tongue or oral mucosa, even though they are diagnosed to have no abnormalities at dental and prosthetic examinations and maintain good health. It is extremely difficult to identify the exact cause of pain in these patients, who have only the complaint of subjective symptoms, without any symptoms such as rubber or swelling. Such pains and discomfort might beCandida. However, reports of the rate of appearance were rare. In the present study, we examined patients with primary complaints of intraoral pain and discomfort thought to be caused byCandida at their first visit to our clinic during the period between March and June 1994, out of 173 geriatric patients. The age of 173 patients was ranging from 65 t... Odontology journals http://www.medworm.com/rss/comments.php?id=2399882 Wed, 06 May 2009 22:19:27 +0100 2399882 http://www.medworm.com/index.php?rid=2399887&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fe842461215102355%2F Abstract  Changes in the permanent dentition that occur with growth in traditional Australian Aborigines have been reported by J. M. Barrett et al. (1965) and T. Brown et al. (1983–92). We undertook research on the longitudinal changes in the size of the permanent dentition of Aborigines by using a different method from that of the aforementioned studies. By focusing on the first molars, we analyzed movements in the anterior permanent dentition. We collected intra-oral plaster models of 50 male Aborigines and 50 female Aborigines, and measured the lengths and widths of the upper and lower dental arch triangles connecting the central fossae of the right and left first molars and the contact points of both central incisors of the subjects at around the ages of 8, 11, 15 a... Odontology journals http://www.medworm.com/rss/comments.php?id=2399887 Wed, 06 May 2009 22:19:26 +0100 2399887 http://www.medworm.com/index.php?rid=2399886&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fn7k57420442670p4%2F Abstract  The change of the reproducibility of maximum border movements in patients with CMD has been studied in the United States. Clayton and others reported a change of PRI, pantographic reproducibility index. There is no information on this in the Japanese population. Also, there is found no study on each section of a scribed line, pantographic reproducibility value (PRV). The purpose of this study is to analyze each section’s characteristics with a Japanese population. 30 craniomandibular disorder patients were used in study. The Denar pneumatic pantograph has used. The average PRI before treatment was 35.5 and after treatment was 14.8 Statistically significant correlation (r=0.56) was found in PRI between before and after treatment. All 12 sections showed a stasisti... Odontology journals http://www.medworm.com/rss/comments.php?id=2399886 Wed, 06 May 2009 22:19:26 +0100 2399886 http://www.medworm.com/index.php?rid=2399885&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fx3g56x1658u87866%2F Abstract  To review the previous preventive measures against the incidence of dental caries in children, we started to examine the state of dental health in children at the age of 18 months. The annual dental examination continued up to 12 years of age (sixgraders). Enrolled in this study were a total of 225 children living in a Town T and born between 1980 and 1982. Meanwhile, we made surveys in order to gauge the degree to which the subjects and their parents have concern for oral health. The findings and their relationships to the caries incidence were analyzed using an epidemiological technique. The annual dental examinations revealed that in primary dentition the incidence of caries tends to increase in 3-year-olds while in permanent dentition the carious process ext... Odontology journals http://www.medworm.com/rss/comments.php?id=2399885 Wed, 06 May 2009 22:19:26 +0100 2399885 http://www.medworm.com/index.php?rid=2399888&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F6175x73j12224l5l%2F Abstract  ZrO2−Al2O3 Composite Ceramics (3Y20A) has been discussed as a reinforcing material for castable glass ceramics. It is a goal of this study to obtain stable adhesive strength of 3Y20A using adhesive resin cement. As for the experimental conditions, four types of adhesive resins and three surface treatment methods were selected, and the effect of their bonding strength was compared. As a result, the surface roughness of 3Y20A was increased and its bonding strengh was improved with a 46% hydrofluoric acid treatment and 5-atm alumina sandblasting. In addition, the use of a silane coupling agent has a tendency to improve bonding strength. After 10,000 thermal cycles, the bonding strength of Panavia 21 was more stable than that of Super Bond C & B, Imperva Dual ceme... Odontology journals http://www.medworm.com/rss/comments.php?id=2399888 Wed, 06 May 2009 22:19:25 +0100 2399888 http://www.medworm.com/index.php?rid=2399889&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fv6k2583661136k81%2F Abstract  To investigate the effect of analgesics on pulsating pains, we studied the effect of pyrazolone and salicylate analgesics on the onset time and duration of analgesia, the course of analgesics response, and the recurrence of pain. The overall effective rate was 90.2%, 97.4% for the pyrazolone analgesics tested and 83.3% for the salicylate analgesics. In the pyrazolone group, the onset time and duration of analgesia were shorter than in the salicylate group. The time course of analgesics response was as follows: Fifteen minutes after ingestion of the pyrazolone analgesics, “severe” pain was reduced to “moderate” or “mild” in half of the patients; By 60 min after ingestion “severe” and “moderate” pains had disappeared; and the maximum analgestic e... Odontology journals http://www.medworm.com/rss/comments.php?id=2399889 Wed, 06 May 2009 22:19:22 +0100 2399889 http://www.medworm.com/index.php?rid=2399891&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fk46wq86856363953%2F Abstract  The respiratory rates following intravenous administration of pentazocine during general anesthesia were measured, in order to determine the effect of pentzocine on respiration from immediately after administration. When respiratory rates were compared among infusion periods of pentazocine (1 mg/kg) for 1, 3 and 6 minutes, it was found that the faster the infusion rate, the shorter the duration to reach the maximum reduction of respiratory rate, showing a significant difference (p<0.05). However, the maximum reduction of respiratory rate did not significantly differ among different infusion periods, indicating the lack of marked effect of infusion period on the maximum reduction of respiratory rate. When respiratory rates were compares between different doses... Odontology journals http://www.medworm.com/rss/comments.php?id=2399891 Wed, 06 May 2009 22:19:21 +0100 2399891 http://www.medworm.com/index.php?rid=2399890&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fc60q57mv74301422%2F Abstract  The purpose of this study is to investigate the bactericidal effects of newly developed electrically oxidized water (EOW) against several genera of bacteria and fungi. This EOW contained hypochlorous acid with chloride ion cuncentrations at 31.1±0.77 ppm in pH 5.20±0.09. Each genus of bacteria (initial concentration of 108 cells/ml) was incubated with EOW for 30sec., one minute, two minutes and five minutes at room temperature. Then the survival rate was determined by colony formation. For the genusStreptococci, E. coli, A. viscosus, F. nucleatum, P. gingivalis andA. actinomycetemcomitans, survived cells were less than 102 cells/ml. But for the genusStaphylococci, B. subtilis, P. aeruginosa andC. albicans more than 103 cells/ml survival. The bactericidal activity w... Odontology journals http://www.medworm.com/rss/comments.php?id=2399890 Wed, 06 May 2009 22:19:21 +0100 2399890 http://www.medworm.com/index.php?rid=2399893&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F335w738326228382%2F Abstract  Digital palpation has been used to evaluate patients with craniomandibular disorders. Tendemess at each site is classified on a 0 to 3 scale and evaluated as total summation. Tendernes were ranked on the scale. Nonparametric statistics were applied to analyze these data. 34 kind 64 sites makes 192 steps in total summation. Increase of step yielded similer results in parametric and nonparametric statistics. The purpose of this study is to clarify the difference in results between nonparametric and parametric statistics. 100 female CMD patient data were used to make group of 13, 25, 50 and 100 subject group. 16 kind 30 sites, 23 kind 44 sites and 34 kind 64 sites were anlysed as summation. The Wilcoxon test and t-test were used to analyse before and after treatment ... Odontology journals http://www.medworm.com/rss/comments.php?id=2399893 Wed, 06 May 2009 22:19:20 +0100 2399893 http://www.medworm.com/index.php?rid=2399892&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fb877p6723818rt2u%2F Abstract  Using the human osteosarcoma-derived osteoblastic cell line, HOS cells, and the human periodontal ligament-derived fibroblast-like cells (Periodontal ligament cells; PDL cells), we examined the responsiveness against mechanical stress (continuously applied compressive force) in HOS and PDL cellsin vitro. SDS-PAGE revealed that loading of mechanical stress (10 g/cm2) promoted intracellular protein production (approx. 30–35 kDa, 40kDa, 55kDa, 65–70kDa) in HOS cells, which are different sizes from those in PDL cells reported previously. Mechanical stress also enhanced heat shock protein (HSP) production in HOS cells and PDL cells: however, the responsiveness was different between HOS cells and PDL cells. In PDL cells, mechanical stress enhanced HSP 60 production m... Odontology journals http://www.medworm.com/rss/comments.php?id=2399892 Wed, 06 May 2009 22:19:20 +0100 2399892 http://www.medworm.com/index.php?rid=2399895&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa521460807307428%2F Abstract  In order to evalute the effects of preoperative irradiation therapy on oral cancer, monoclonal antibody to proliferating cell nuclear antigen (PCNA) was used to calculate PCNA positive rates before and after 30Gy irradiation therapy. The subjects were 24 patientas with oral cancer. Based on the results, the relation between PCNA positive rate and the histolosical effects of irradiation therapy was quantitatively analyzed. The conclusions are summarized as follows. 1)  The average pretreatment PCNA positive rate was 33.4±11.4% while the average posttreatment rate was 24.0±7.9%. 2)  Subjects were classified according to the degree of differentiation for pretreatment and posttreatment comparison. However, there existed no significant difference ... Odontology journals http://www.medworm.com/rss/comments.php?id=2399895 Wed, 06 May 2009 22:19:19 +0100 2399895 http://www.medworm.com/index.php?rid=2399894&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fj24325055072789n%2F Abstract  In order to establish human oral epithelial cell lines, secondary cultures of human oral keratinocytes from normal gingival tissues obtained from 20–29-yr-old females were transfected with origin (−) SV40 DNA (pRNS-1) and human c-fos gene (pBK 28) using Transfectam reagent® (Promega, WI). Out of 20 cultures transfected with pRNS-1, only one culture escaped senescence. After the transfection with origin(−) SV40 (87 days in culture), human c-fos (pBK 28) was introduced into ori− cells. Ori− cells and ori− cells transfected with c-fos, designated NDUSD-1 cells, were subjected to G418 selection (25μg/ml) for 125 days of culture. NDUSD-1 cells were immortal with continious growth for more than 1000 days in culture. Southern blotting analysis demonstrated tha... Odontology journals http://www.medworm.com/rss/comments.php?id=2399894 Wed, 06 May 2009 22:19:19 +0100 2399894 http://www.medworm.com/index.php?rid=2399896&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F21kp650035585217%2F Abstract  The clasp arms are fatigued by wearing a denture, by taking it off, and by occlusion. We routinely use laser irradiation to harden only the surface layer of clasp arms consisting of gold-silver-palladium alloy partially hardened by laser irradiation to resist fatigue. Recently we tested laser irradiation on silver-palladium-copper alloys, and obtained the following results: 1)  The surface hardness of the mother alloy No. 12 (52.5Ag−12.5Pd−35.0Cu alloy (wt%)) was 299.7HV after laser irradiation, 155% harder than after casting. 2)  The surface hardness of the 18Au−40Ag−20Pd−22Cu alloy (wt%) was 235.0HV after laser irradiation, 91% harder than after being softened, 15% harder than that after being hardened. The brightness (L*) of the ... Odontology journals http://www.medworm.com/rss/comments.php?id=2399896 Wed, 06 May 2009 22:19:18 +0100 2399896 http://www.medworm.com/index.php?rid=3093771&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F8723r7g4341724q2%2F Conclusions are as follows: 1.  Two to eight cutaneous branches, with averaged 3.7±1.1 per leg, are located at the mid-portion of leg. The mean inner diameter of peroneal artery and vein were 2.2±0.6mm and 2.7±1.0mm respectively. The mean of length of vascular pedicle was 3.8±0.9 cm. Fibular bone, which can be harvested, was 21.2±1.8cm. 2.  Vertical bone height when minimum length of horizontal section is 6mm in diameter at each four portions per leg, total number of 240 cross-sectional faces of 60 legs were measured. 72 sections of 32 legs (30.0%) were shorter than 10mm, 16 sections of 8 legs (22.2%) in male and 56 sections of 24 legs (77.8%) in female. 3.  Ideal mandibular contour could be reformed using osteotomy technique at several portiu... Odontology journals http://www.medworm.com/rss/comments.php?id=3093771 Wed, 06 May 2009 22:19:15 +0100 3093771 http://www.medworm.com/index.php?rid=2399897&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fq630202581h4276k%2F Abstract  The formation of the cartilage in mandible of human fetuses, which ranged from 12 to 32 weeks gestation, was systematically investigated with immunohistochemystry linked to an image color analyzer. One of the extracellular matrix proteins (type II collagen) was found mainly in the hypertrophic layer of the condyle from 16 weeks gestation. The percentage of type II collagen per 10,000μm2 area using a computer system with an image color analyzer gradually increased from 16 weeks gestation. This analyzer system revealed the value of cell activity by using immunoperoxidase staining. These results suggested that type II collagen effects the formation of mandibular condyle and the temporomandibular joint during embryonic stages. Content Type Journal ArticleDOI 10.1... Odontology journals http://www.medworm.com/rss/comments.php?id=2399897 Wed, 06 May 2009 22:19:15 +0100 2399897 http://www.medworm.com/index.php?rid=3093773&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fp574522498413h13%2F In this study, seventy adult humans were selected at autopsy from donations at Nippon Dental University for macroscopic, histochemical, and scanning microscopic analyses of the muscle-bone junction in mandible. The following results were obtained. 1)  Macroscopic analysis at human muscle-bone junction in mandible showed that various attachments were found in each masticatory muscle, however there were no strong correlations between measurments values and aging and sex. 2)  Immunohistochemical analysis also revealed that anti PCNA (cyclin proliferating cell nuclear antigen) positive cells were observed predominatly at the muscle-bone junction, and the percentage of these cells in pterygoid muscles was higher than in other muscles. Different distributions of the E... Odontology journals http://www.medworm.com/rss/comments.php?id=3093773 Wed, 06 May 2009 22:19:14 +0100 3093773 http://www.medworm.com/index.php?rid=3093772&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fp423124547072302%2F Abstract  A clinical and statistical analysis on 180 patients with 58 maxillary and 147 malar fractures, treated at the hospital of the Nippon Dental University, School of Dentistry at Niigata, Department of Oral and Maxillofacial Surgery II from July 1974 to December 1992, was retrospectively perfomed. Of fifty five patients, 37 maxillary fractures and 36 malar fractures could not be classified into either Le Fort classification or Night and North type classification assessed by radiographic image. Based on this fact, preliminary type of classification was newly developed for these fractures, i.e., Type I: infra-mid-third facial fracture, Type II: lateral-midthird facial fracture, a; without dislocation or b; with dislocation, Type III: zygomatic bone fracture only. Type I... Odontology journals http://www.medworm.com/rss/comments.php?id=3093772 Wed, 06 May 2009 22:19:14 +0100 3093772 http://www.medworm.com/index.php?rid=3093775&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fn541637g78u7260m%2F Abstract  Sixteen sinuses of 11 patients performed by sinus lift procedure were retrospectively discussed clinically and histopathological investigations from grafted materials. Grafted materials were 10 autogenous bones harvested from 1 iliac crest and 9 chin bones, 1 non-resorbable hydroxyapatite plus mandibular alveolar ridge bone, and 1 mixed of resorbable hydroxyapatite plus human freezed dry bone. Histopathological investigation on several small speciemens taken from grafts of these different materials was performed. New bone formation, small amount of bone resorption and fibrous encapsuling tissue were observed for autogenous bone graft, but new bone formation was delayed around non-resorbable hydroxyapatite particles, and most of all grafted specimens of human freez... Odontology journals http://www.medworm.com/rss/comments.php?id=3093775 Wed, 06 May 2009 22:19:13 +0100 3093775 http://www.medworm.com/index.php?rid=3093774&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F70335248mk1w7436%2F Abstract  Lipoma is generally regarded as a benign nonepithelial tumor consisting of mature adipose cells. Although lipoma is said to develop everywhere adipose tissues physiologically exist, it frequently develops in the subcutaneous tissues of extremities and trunk. Therefore the incidence of lipoma of mouth is relatively low. The author experienced a case of lipoma which developed in the buccal mucosa and reported the treatment course. The patient was a 70-year-old female who presented herself in the department of oral surgery with a chief complaint of a mass in the right buccal mucosa. She was treated in the outpatient clinic and underwent tumorectomy under local anesthesia. According to the histopathological findings, the lipoma was a subepithelial tumor with well-defi... Odontology journals http://www.medworm.com/rss/comments.php?id=3093774 Wed, 06 May 2009 22:19:13 +0100 3093774 http://www.medworm.com/index.php?rid=3093777&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F640640j707246242%2F Abstract  The multi-disciplinary concept of dental care in the adult patient, especially the middle age group, has recently received considerable attention in orthodontics. The author presents the orthodontic treatment of a middle age female with severe overjet. The patient was forty-one years and eleven months old female with a Class II, Division 1, malocclusion. Besides a severe skeletal discrepancy in the anterior-posterior relationship, the U1-SN was 123.5 degrees. There were spaces in the maxillary anterior segment and a large space was present between the canine and first premolar. The mandibular right first and second premolars occluded in lingual position. Begg plastic brackets were placed in the maxilla and C.A.T. brackets were placed in the mandible. The severe ... Odontology journals http://www.medworm.com/rss/comments.php?id=3093777 Wed, 06 May 2009 22:19:12 +0100 3093777 http://www.medworm.com/index.php?rid=3093776&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fel2g6pt042780631%2F Abstract  The bactericidal effect of acidic electrolyzed water (AEW) generated by an apparatus of EIKEN Industry Co, was investigated. We used 3 strains ofEscherichia coli O157: H7, 96003 strain producing VT1, 96140 and 96141 with both VT1 and VT2 which were isolated in Gunma Prefecture. The bactericidal effect of the AEW was investigated in a serial dilution of AEW with or without the presence of serum. No. 96140 was killed at 25% of AEW and No. 96003 and 96141 were killed at 10% of AEW within 1 min. The bactericidal effect of AEW was greatly decreased in the presence of a low concentration of serum as low as 1%. Content Type Journal ArticleDOI 10.1007/BF03039047Authors Kazuko Saito, The Nippon Dental University School of Dentistry at Niigata Department of Oral Microbio... Odontology journals http://www.medworm.com/rss/comments.php?id=3093776 Wed, 06 May 2009 22:19:12 +0100 3093776 http://www.medworm.com/index.php?rid=3093780&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fjl080027x672t175%2F Abstract  The effects of school health activities on the children’s state of oral health were investigated in a total of 299 elementary schools in Niigata Prefecture which had not yet expanded their school dental health program to include fluoride mouthrinsing. The relationship of the caries incidence of cares to the way each school is implementing its health program was analyzed according to the size of school. The results showed that there was no difference in the incidence of tooth decay among pupils in the second grade or above regardless of the size of school. However, the school dental health program was carried out differently depending on the size of school. In small-scale schools, emphasis was placed on health supervision, while in medium-size and large-size sc... Odontology journals http://www.medworm.com/rss/comments.php?id=3093780 Wed, 06 May 2009 22:19:07 +0100 3093780 http://www.medworm.com/index.php?rid=3093779&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fk6796460r2m125n3%2F Abstract  We performed stress analysis by the three-dimensional photoelastic experiments in order to elucidate dynamic behavior in porcelain laminate veneer restoration of the lower central incisors. We employed two models in preparing the crown: Model 1 (incisal edge not covered with laminate shell) and Model 2 (incisal edge covered with laminate shell). We used two conditions of loading: Loading 1 (load applied to the labial mesial angle near the incisal edge from the side at an angle of 45° against the tooth axis) and Loading 2 (load applied to the incisal edge in parallel to the tooth axis). 1)  Below the loading point during Loading 1 in Model 1 suggesting the possbility of laminate shell detachment. 2)  In a wide range in the distal part of shel... Odontology journals http://www.medworm.com/rss/comments.php?id=3093779 Wed, 06 May 2009 22:19:07 +0100 3093779 http://www.medworm.com/index.php?rid=3093778&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fulrr44k4g1459833%2F Abstract  Titanium and/or titanium alloys are useful materials for dental implant. To investigate the effect of these materials on the living body, specimens made of titanium or titanium alloy were embedded to the thingbone of rabbits for long terms (27 weeks) and following results were oblained: 1.  In general interim observation, apperance, behavior and increasing rate of weight of rabbits and also chemical analysis of blood gave no abnormal finding. 2.  In tissue structure findings, the embedded specimens were nearly surrounded by bone and partially by a thin layer of connective tissue but no other changes were observed, particularly on soft tissue. 3.  From the results of ICP analysis, any material which seemed to be eluted from the sp... Odontology journals http://www.medworm.com/rss/comments.php?id=3093778 Wed, 06 May 2009 22:19:07 +0100 3093778 http://www.medworm.com/index.php?rid=3093785&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F20750618guwj5u2r%2F In this study, 7 intraoral sites were analyzed. The results were compared with previous studies (high to low). 1.  The order of pain was: 1. Lateral pterygoid muscle 2. Medial pterygoid muscle 3. Posterior part of tongue and Anterior belli of digastrics 5. Temporalis insertion and middle part of tongue 7. Anterior part of tongue. This order was constant before and after the splint therapy. 2.  Intraoral sites showed significantly higher tenderness compared to corresponding intraoral sites. Temporalis showed 2.29 times or more in before treatment and 10.85 times or more after treatment. Medial pterygoid shows 1.47 times higher before and 5.32 times higher after treatment. Anterior belli of digastrics shows 1.34 times higher before and 2.49 times higher after trea... Odontology journals http://www.medworm.com/rss/comments.php?id=3093785 Wed, 06 May 2009 22:19:06 +0100 3093785 http://www.medworm.com/index.php?rid=3093784&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa2878175w762l108%2F This study suggests that neurons in the trigeminal subnucleus interpolaris or in its surrounding area are involved in relaying sensory information from salivary glands. Content Type Journal ArticleDOI 10.1007/BF03039157Authors Teruo Nakajima, The Nippon Dental University School of Dentistry at Niigata Department of Oral Physiology Niigata JapanKen’Ichi Ishizuka, The Nippon Dental University School of Dentistry at Niigata Department of Oral Physiology Niigata JapanToshiki Murakami, The Nippon Dental University School of Dentistry at Niigata Department of Oral Physiology Niigata Japan Journal OdontologyOnline ISSN 1618-1255Print ISSN 1618-1247 Journal Volume Volume 86 Journal Issue Volume 86, Number 1 / June, 1998 (Source: Odontology) Odontology journals http://www.medworm.com/rss/comments.php?id=3093784 Wed, 06 May 2009 22:19:06 +0100 3093784 http://www.medworm.com/index.php?rid=3093783&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fj8535ngmq55w4807%2F Abstract  There have been few reports addressing the state of bond between synthesized fluorapatite on the enamel by the gel method and the existing enamel. The purpose of the present study is to examine the ultrastructure of the interface between the existing enamel and synthesized fluorapatite. The results are as follows. 1.  Scanning electron microscopy revealed a distinct border between synthesized fluorapatite and the existing enamel surface. Observation after acid erosion showed the evidence of demineralization at the interface. 2.  Transmission electron microscopy identified two distinct patterns at the interface between large fluorapatite crystals and the enamel surface: one involving a gap and the other with a direct contact. Synthesized fluor... Odontology journals http://www.medworm.com/rss/comments.php?id=3093783 Wed, 06 May 2009 22:19:06 +0100 3093783 http://www.medworm.com/index.php?rid=3093782&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fj551225r2kk73770%2F Abstract  The Pantographic Reproducibility Index (PRI) has been developed to evaluate mandibular dysfunction through the reproducibility of lateral border movements. There exist no data on the Japanese population regarding PRI. The purpose of this study is to determine the normal range of PRI in normal subjects. Those data will be compared to the patient data and an evaluation of the treatment outcome. Ten male and ten female Japanese who reported no signs and symptoms of Craniomandiubular Disorders were used in this study. 1.  The average PRI in males was 6.95 (5.93). In females the average was 7.30 (4.45). There was no statistical difference between sexes. 2.  One male subject showed a PRI at 25 and was classified to the slight dysfunction category ... Odontology journals http://www.medworm.com/rss/comments.php?id=3093782 Wed, 06 May 2009 22:19:06 +0100 3093782 http://www.medworm.com/index.php?rid=3093781&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fj36338w863221mk7%2F Abstract  Peripheral cementifying fibroma is a rare tumor. It is classified as an osteogenic neoplasm by the WHO classification (1992). We encountered a 67 years old man who developed it on the buccal gingiva in the left lower posterior molar region of the mandible. The lesion was diagnosed clinically as epulis osteoplastica. The lesion was surgically excised under local anesthesia with first and second molar extractions. Histopathological examination indicated the lesion to be a peripheral cementifying fibroma. The post operative course was good. Content Type Journal ArticleDOI 10.1007/BF03039158Authors Kazuyoshi Ozawa, Joetsu General Hospital Department of Dentistry, Oral and Maxillofacial Surgery Niigata JapanKaoru Ishii, The Nippon Dental University School of Denti... Odontology journals http://www.medworm.com/rss/comments.php?id=3093781 Wed, 06 May 2009 22:19:06 +0100 3093781 http://www.medworm.com/index.php?rid=2383638&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F39542421632r1302%2F The objective of the present study was to determine the F release from two fluoride-releasing orthodontic materials in de-ionized water, and to evaluate the effects of the products, the F concentration of NaF solutions (0.02, 2%) and the immersion time (3, 6min) on the F rechargeable ability, during a two week trial. The results indicated that both the F releasing and the F rechargeable abilities were significantly different between products, and the effect of NaF immersion on the rechargeable ability was greater for the F concentration of NaF solution than for the effect of immersion time. Content Type Journal ArticleDOI 10.1007/BF03039024Authors Kensaku Takahashi, The Nippon Dental University School of Dentistry at Tokyo Department of Preventive Dentistry Tokyo JapanMasaaki I... Odontology journals http://www.medworm.com/rss/comments.php?id=2383638 Thu, 30 Apr 2009 05:55:08 +0100 2383638 http://www.medworm.com/index.php?rid=2383639&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fap8u03947762766k%2F Abstract  The investigation of the effects of mutastein and dextranase on the crude GTF derived fromS. mutans B13, and liveS. mutans B13, were made, and the following results were ohtained. 1)  The amount of insoluble glucans formed on the surface of the wall of a test tube in the presence of mutastein or dextranase decreased with the increase in the concentration of mutastein or dextranase. The amount of synthesized water-soluble glucans and insoluble non-adherent glucans increased with the increase in the concentration of mutastein or dextranase up to a certain point. 2)  The formation of plaques in the presence of live bacteria was significantly suppressed when mutastein or dextranase was added. 3)  By observation with the observation with... Odontology journals http://www.medworm.com/rss/comments.php?id=2383639 Thu, 30 Apr 2009 05:55:07 +0100 2383639 http://www.medworm.com/index.php?rid=2383640&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F2627h027737x6711%2F We examined the rat-mandibles which had been operated by the GBR technique and obtained following results: 1.  Bone regeneration at both experimental sides promoted due to the obstruction of invasion of muscle tissue around the defect area. 2.  The regeneration of small vessels was observed in the defective area on the both experimental sides, especially at the GTAM side. 3.  Loose connective tissue was found for long periods on the both experimental sides. 4.  Regenerated bone began at the bony edge of the defect area, and irregular sponge-like new bone was detected on the both experimental sides and exhibited lamella structure due to a remodeling. New bone particles were scattered in the middle of bony defective at the GTAM side. ... Odontology journals http://www.medworm.com/rss/comments.php?id=2383640 Thu, 30 Apr 2009 05:55:06 +0100 2383640 http://www.medworm.com/index.php?rid=2383642&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fg74x9x01v6686472%2F Abstract  We have followed a case of Papillon-Lefèvre syndrome over 20 years since the patient was brought to our hospital at the age of four. During this period, we inserted two sets of primary dentition dentures each into the upper and lower jaws, and later five sets of permanent dentition dentures in the both jaws corresponding the changes in the oral condition tootn erupution, exfoliation and the number of remaining teeth. From the longitudinal odservation, we have arrived at the conclusions as follows: 1.  The replacement of missing parts in the dental arch with plate dentures culd achieve restoration of dental function as well as esthetics. 2.  Early exfoliation had no serious effect on the growth of either the maxillae or the mandidles. 3.... Odontology journals http://www.medworm.com/rss/comments.php?id=2383642 Thu, 30 Apr 2009 05:55:04 +0100 2383642 http://www.medworm.com/index.php?rid=2383641&cid=s_33313_11_f&fid=33313&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fgp41857346v387lm%2F Abstract  A sequential study concerning suicide of patients with oral cancer, notification of oral cancer, terminal care of patients with oral cancer at home, etc. has been performed in our department. As part of the study, a possible role of hospital dentistry and oral and maxillofacial surgery at a local area was examined recently with reference to the terminal alleviating care provided to three patients with oral cancer at Joetsu General Hospital. The result was as follows: It is natural that most patients want to die at home in the presence of their family. In order to fulfill such a desire, it is considered necessary that a hospital dentistry and oral and maxillofacial surgery must handle terminal alleviating care. However, many problems still remain in managing pati... Odontology journals http://www.medworm.com/rss/comments.php?id=2383641 Thu, 30 Apr 2009 05:55:04 +0100 2383641