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 'Journal of Applied Oral Science' source. Wed, 08 Feb 2012 12:06:19 +0100 http://www.medworm.com/index.php?rid=5581804&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600023%26lng%3Den%26nrm%3Diso%26tlng%3Den The objective of this study was to describe the process of intensive speech therapy for a 6-year-old child using compensatory articulations while presenting with velopharyngeal insufficiency (VPI) and a history of cleft lip and palate. The correction of VPI was temporarily done with a pharyngeal obturator since the child presented with very little movement of the pharyngeal walls during speech, compromising the outcome of a possible pharyngeal flap procedure (pharyngoplasty). The program of intensive speech therapy involved 3 phases, each for duration of 2 weeks incorporating 2 daily sessions of 50 minutes of therapy. A total of 60 sessions of intervention were done with the initial goal of eliminating the use of compensatory articulations. Evaluation before the program indicated the use o... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581804 Fri, 13 Jan 2012 21:27:33 +0100 5581804 http://www.medworm.com/index.php?rid=5581803&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600022%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: The majority of participants proposed inadequate therapies, and 51% suggested orthodontic correction of occlusion, including orthognathic surgery. Educational activities on migraine should also target orthodontists. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581803 Fri, 13 Jan 2012 21:27:33 +0100 5581803 http://www.medworm.com/index.php?rid=5581802&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600021%26lng%3Den%26nrm%3Diso%26tlng%3Den This study evaluated the efficacy of complete denture biofilm removal using chemical (alkaline peroxide-effervescent tablets), mechanical (ultrasonic) and combined (association of the effervescent and ultrasonic) methods. MATERIAL AND METHODS: Eighty complete denture wearers participated in the experiment for 21 days. They were distributed into 4 groups (n=20): (1) Brushing with water (Control); (2) Effervescent tablets (Corega Tabs); (3) Ultrasonic device (Ultrasonic Cleaner, model 2840 D); (4) Association of effervescent tablets and ultrasonic device. All groups brushed their dentures with a specific brush (Bitufo) and water, 3 times a day, before applying their treatments. Denture biofilm was collected at baseline and after 21 days. To quantify the biofilm, the internal surfaces of the ... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581802 Fri, 13 Jan 2012 21:27:33 +0100 5581802 http://www.medworm.com/index.php?rid=5581801&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600020%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: Color changes and peaks of chemical elements suggestive of corrosion were observed in the soldering point areas between the wire, silver brazing and band in both control and experimental groups, which indicate that the 0.12% chlorhexidine gluconate mouthrinses did not influence the occurrence of corrosion in situ. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581801 Fri, 13 Jan 2012 21:27:33 +0100 5581801 http://www.medworm.com/index.php?rid=5581800&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600019%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: Lower stresses were observed in the denture with an additional tooth. Based on the flow limit of the materials, porcelain showed values below the limit of functional mastication. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581800 Fri, 13 Jan 2012 21:27:33 +0100 5581800 http://www.medworm.com/index.php?rid=5581799&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600018%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: The results of this in vitro study suggest that the healthy remaining radicular dentin is more important to increase fracture resistance than the root reconstruction protocol. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581799 Fri, 13 Jan 2012 21:27:33 +0100 5581799 http://www.medworm.com/index.php?rid=5581798&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600017%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: The aim of this in vitro study was to evaluate the bond strength of different root canal sealers to dentin. MATERIAL AND METHODS: Forty extracted single-rooted human teeth were examined and the coronal and middle thirds of the canals were prepared with a 1.50 mm post drill (FibreKor Post System, Pentron). The teeth were allocated in two experimental groups, irrigated with 2.5% NaOCl+17% EDTA or saline solution (control group) and instrumented using Race rotary files (FKG) to a size #40 at the working length. Then, the groups were divided into four subgroups and filled with Epiphany sealer (Group 1), EndoREZ (Group 2), AH26 (Group 3) and Grossman's Sealer (Group 4). After 2 weeks of storage in 100% humidity at 37ºC, all teeth were sectioned transversally into 2-mm-thick discs. P... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581798 Fri, 13 Jan 2012 21:27:33 +0100 5581798 http://www.medworm.com/index.php?rid=5581797&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600016%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: Apple vinegar associated or not with EDTA was effective in removing smear layer when used as an endodontic irrigant. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581797 Fri, 13 Jan 2012 21:27:33 +0100 5581797 http://www.medworm.com/index.php?rid=5581796&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600015%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVES: The purpose of this study was to compare the effects of a differently designed functional appliance (R-appliance) and the Anterior Inclined Bite Plate (AIBP) in Class II Division I (Cl II Div I) cases. MATERIAL AND METHODS: Fifty patients (28 girls, 22 boys) were chosen for the study: 25 patients (13 girls, 12 boys) with mean age of 10.4±0.8 years were treated with R-appliance for 11±2 months, the other 25 patients (15 girls, 10 boys) with mean age of 9±1.2 years were treated with AIBP for 10±2 months. All patients had Cl II Div I malocclusion due to mandibular deficiency. Lateral cephalograms were analyzed at the beginning (T1, T 1) and end of the study (T2, T 2). RESULTS: Paired T-test showed that SNB had a significant increase in both groups. The same test revealed that ... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581796 Fri, 13 Jan 2012 21:27:33 +0100 5581796 http://www.medworm.com/index.php?rid=5581795&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600014%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Aluminum sulfate, ferric sulfate and aluminum chloride hemostatic solutions did not show any inhibitory potential on the addition silicone samples under study, and there were no changes in polymerization as a result of contact between addition silicone and retraction cords handled with latex gloves. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581795 Fri, 13 Jan 2012 21:27:33 +0100 5581795 http://www.medworm.com/index.php?rid=5581794&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600013%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Repeated immersion cycles in disinfecting solutions alter ΔE* values, however these values do not compromise the color of the tested denture tooth acrylic resins because they are imperceptible to the human eye. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581794 Fri, 13 Jan 2012 21:27:33 +0100 5581794 http://www.medworm.com/index.php?rid=5581793&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600012%26lng%3Den%26nrm%3Diso%26tlng%3Den Conclusion: The changes in nasalance observed after drilling holes of known sizes in a speech bulb suggest that nasometry reflect changes in transfer of sound energy related to different sizes of velopharyngeal opening. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581793 Fri, 13 Jan 2012 21:27:33 +0100 5581793 http://www.medworm.com/index.php?rid=5581792&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600011%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVES: The present study used strain gauge analysis to perform an in vitro evaluation of the effect of axial loading on 3 elements of implant-supported partial fixed prostheses, varying the type of prosthetic cylinder and the loading points. MATERIAL AND METHODS: Three internal hexagon implants were linearly embedded in a polyurethane block. Microunit abutments were connected to the implants applying a torque of 20 Ncm, and prefabricated Co-Cr cylinders and plastic prosthetic cylinders were screwed onto the abutments, which received standard patterns cast in Co-Cr alloy (n=5). Four strain gauges (SG) were bonded onto the surface of the block tangentially to the implants, SG 01 mesially to implant 1, SG 02 and SG 03 mesially and distally to implant 2, respectively, and SG 04 distally t... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581792 Fri, 13 Jan 2012 21:27:33 +0100 5581792 http://www.medworm.com/index.php?rid=5581791&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600010%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: The present results indicate that the 2-min protocol produced more marked bone necrosis than the 1-min protocol. Although our results cannot be entirely extrapolated to clinical practice, they contribute to the understanding of the behavior of bone tissue submitted to different cycles of liquid nitrogen freezing and may serve as a basis for new studies. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581791 Fri, 13 Jan 2012 21:27:33 +0100 5581791 http://www.medworm.com/index.php?rid=5581790&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600009%26lng%3Den%26nrm%3Diso%26tlng%3Den Conclusions: The results showed that the TLFOB-USP members, adjoining to the professor's participants, develop projects in Tele-helth, in Tele-aid and Tele-education areas, thus resulting in the involvement of the University and the community. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581790 Fri, 13 Jan 2012 21:27:33 +0100 5581790 http://www.medworm.com/index.php?rid=5581789&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600008%26lng%3Den%26nrm%3Diso%26tlng%3Den Conclusion: Further studies about the application of the translated FAPI are necessary to make the test practicable in Brazilian clinical use. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581789 Fri, 13 Jan 2012 21:27:33 +0100 5581789 http://www.medworm.com/index.php?rid=5581788&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600007%26lng%3Den%26nrm%3Diso%26tlng%3Den Conclusion: We found a low occurrence of use of cleft related CA during attempts of production of liquid phonemes, and the variable age at primary palatoplasty significantly interfered with the acquisition of consonant cluster /r/. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581788 Fri, 13 Jan 2012 21:27:33 +0100 5581788 http://www.medworm.com/index.php?rid=5581787&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600006%26lng%3Den%26nrm%3Diso%26tlng%3Den Conclusion: One may conclude that the teachers who reported vocal alterations better realize the impact of voice in different dimensions of voice quality of life. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581787 Fri, 13 Jan 2012 21:27:33 +0100 5581787 http://www.medworm.com/index.php?rid=5581786&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600005%26lng%3Den%26nrm%3Diso%26tlng%3Den The evaluation of oral and vocal fold diadochokinesis (DDK) in individuals with voice disorders may contribute to the understanding of factors that affect the balanced vocal production. Scientific studies that make use of this assessment tool support the knowledge advance of this area, reflecting the development of more appropriate therapeutic planning. Objective: To compare the results of oral and vocal fold DDK in dysphonic women and in women without vocal disorders. Material and methods: For this study, 28 voice recordings of women from 19 to 54 years old, diagnosed with dysphonia and submitted to a voice assessment from speech pathologist and otorhinolaryngologist, were used. The control group included 30 nondysphonic women evaluated in prior research from normal adults. The analysis p... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581786 Fri, 13 Jan 2012 21:27:33 +0100 5581786 http://www.medworm.com/index.php?rid=5581785&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600004%26lng%3Den%26nrm%3Diso%26tlng%3Den Conclusions: Brazil is a developing country. The use of technologies for education reduces cultural isolation among education professionals. It is necessary to focus on making teaching materials for distance education. In order to provide an effective learning environment, the learners reality should be considered. A multidisciplinary team should prepare the materials. The development of educational material for distance education on the acquisition and development of written language seems not only appropriate, but also warranted to provide professional growth opportunity for teachers who need time flexibility and/or live far away from academic centers. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581785 Fri, 13 Jan 2012 21:27:33 +0100 5581785 http://www.medworm.com/index.php?rid=5581784&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600003%26lng%3Den%26nrm%3Diso%26tlng%3Den Conclusion: In powdered milk, the viscosity increases over time; the viscosity in human milk diminishes. The results point out the importance not only of considering the concentration of the thickener but also the time being administered after its addition to effectively treat dysphagic infants. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581784 Fri, 13 Jan 2012 21:27:33 +0100 5581784 http://www.medworm.com/index.php?rid=5581783&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600002%26lng%3Den%26nrm%3Diso%26tlng%3Den The oral language development depends on the effective development of the hearing system. In cases of children presenting with hearing loss, a cochlear implant is an electronic device indicated to (re)habilitate the hearing function. Thus, it is of paramount importance to assess and follow the oral language development of children fitted with a cochlear implant (CI) to measure the effectiveness of the electronic device and support the therapeutic planning of these children. Questions are currently being raised about the instruments to assess the oral language of children using a CI, and, seeking the answers, this systematic review aimed at surveying these instruments. Searches were performed in three different databases utilizing six different descriptors to select articles published from ... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581783 Fri, 13 Jan 2012 21:27:33 +0100 5581783 http://www.medworm.com/index.php?rid=5581782&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000600001%26lng%3Den%26nrm%3Diso%26tlng%3Den (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5581782 Fri, 13 Jan 2012 21:27:33 +0100 5581782 http://www.medworm.com/index.php?rid=5297045&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500018%26lng%3Den%26nrm%3Diso%26tlng%3Den Hypodontia is the congenital absence of one or more teeth and may affect permanent teeth. Several options are indicated to treat hypodontia, including the maintenance of primary teeth or space redistribution for restorative treatment with partial adhesive bridges, tooth transplantation, and implants. However, a multidisciplinary approach is the most important requirement for the ideal treatment of hypodontia. This paper describes a multidisciplinary treatment plan for congenitally missing permanent mandibular second premolars involving orthodontics, implantology and prosthodontic specialties. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297045 Sun, 09 Oct 2011 04:44:08 +0100 5297045 http://www.medworm.com/index.php?rid=5297044&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500017%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: RME performed on children in stages of primary and mixed dentition did not have any impact on nasal morphology, as assessed using facial analysis. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297044 Sun, 09 Oct 2011 04:44:08 +0100 5297044 http://www.medworm.com/index.php?rid=5297043&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500016%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Although the fragment was stable, the presence of adhesive in Group II did not allow graft incorporation to the recipient site, determining a localized, discrete and persistent inflammatory reaction. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297043 Sun, 09 Oct 2011 04:44:08 +0100 5297043 http://www.medworm.com/index.php?rid=5297042&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500015%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: The effect of disinfection by immersion in sodium perborate solution and microwave irradiation on surface roughness of one denture base resin (Lucitone 550 -L), 3 hard chairside reline resins (Tokuyama Rebase II-TR, New Truliner-NT, Ufi Gel hard-UH) and 3 resilient reline materials (Trusoft-T; Sofreliner-S, Dentusil-D) was evaluated. MATERIAL AND METHODS: Thirty specimens of each material were made and divided into 3 groups: Control - not disinfected; P - daily disinfection by immersing in sodium perborate solution (3.8%); MW - microwave disinfection (6 min/650 W). Roughness measurements were made after polymerization (baseline) and after 1, 3 and 28 days. Roughness differences relative to the baseline readings were analyzed by Student's t-test (P=0.05). RESULTS: At baseline, Tr... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297042 Sun, 09 Oct 2011 04:44:08 +0100 5297042 http://www.medworm.com/index.php?rid=5297041&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500014%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: No statistically significant differences were found between the values of surface energy. The measured wettability differed statistically in most combinations as a function of the type of composite resin, type of light-curing unit, and the test liquid. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297041 Sun, 09 Oct 2011 04:44:08 +0100 5297041 http://www.medworm.com/index.php?rid=5297040&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500013%26lng%3Den%26nrm%3Diso%26tlng%3Den This study evaluated the response of periapical tissues to the endodontic sealer Endométhasone in root canal fillings short of or beyond the apical foramen. MATERIAL AND METHODS: Twenty root canals of premolars and incisors of 2 mongrel dogs were used. After coronal access and pulp extirpation, the canals were instrumented up to a size 55 K-file and the apical cemental barrier was penetrated with a size 15 K-file to obtain a main apical foramen, which was widened to a size 25 K-file. The canals were irrigated with saline at each change of file. The root canals were obturated either short of or beyond the apical foramen by the lateral condensation of gutta-percha and Endométhasone, originating 2 experimental groups: G1: Endométhasone/short of the apical foramen; G2: Endométhasone/beyond... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297040 Sun, 09 Oct 2011 04:44:08 +0100 5297040 http://www.medworm.com/index.php?rid=5297039&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500012%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVES: The purpose of this study was to investigate the effect of different air-polishing powders on the color stability of different types of composite resin restorative materials. MATERIAL AND METHODS: Thirty cylindrical specimens (15×2 mm) were prepared for each of 7 composite resin restorative materials. All specimens were polished with a series of aluminum oxide polishing discs (Sof-Lex). The prepared specimens of each composite resin were randomly divided into 3 groups of 10 specimens each, for control (Group-C) and two air-powder applications (Group-CP: Cavitron Prophy-Jet; Group-PS: Sirona ProSmile prophylaxis powder). A standard air-polishing unit (ProSmile Handly) was used. All specimens were air-powdered for 10 s at 4-bar pressure. The distance of the spray nosel from the ... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297039 Sun, 09 Oct 2011 04:44:08 +0100 5297039 http://www.medworm.com/index.php?rid=5297038&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500011%26lng%3Den%26nrm%3Diso%26tlng%3Den This study evaluated experimentally-induced periapical bone loss sites using digital radiographic and histopathologic parameters. MATERIAL AND METHODS: Twenty-seven Wistar rats were submitted to coronal opening of their mandibular right first molars. They were radiographed at 2, 15 and 30 days after the operative procedure by two digital radiographic storage phosphor plates (Digora®). The images were analyzed by creating a region of interest at the periapical region of each tooth (ImageJ) and registering the corresponding pixel values. After the sacrifice, the specimens were submitted to microscopic analysis in order to confirm the pulpal and periapical status of the tooth. RESULTS: There was significant statistically difference between the control and test sides in all the experimental p... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297038 Sun, 09 Oct 2011 04:44:08 +0100 5297038 http://www.medworm.com/index.php?rid=5297037&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500010%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: There was no association between TMD and speech disorders. Occlusal alterations may be factors of influence, allowing distortions and frontal lisp in phonemes /s/ and /z/ and inadequate tongue position in phonemes /t/; /d/; /n/; /l/. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297037 Sun, 09 Oct 2011 04:44:08 +0100 5297037 http://www.medworm.com/index.php?rid=5297036&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500009%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: A standard error assuming that mean differences are zero, which is referred to in Orthodontics and Facial Orthopedics as the Dahlberg error, can be calculated only for estimating precision if accuracy is already proven. When double readings are collected, limits of agreement and coefficients of repeatability must be calculated. A graph with differences of readings should be presented and outliers discussed. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297036 Sun, 09 Oct 2011 04:44:08 +0100 5297036 http://www.medworm.com/index.php?rid=5297035&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500008%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: It may be concluded that 0.05% NaOCl and Medical Interporous tablets are not suitable as auxiliary chemical solutions for RPD care. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297035 Sun, 09 Oct 2011 04:44:08 +0100 5297035 http://www.medworm.com/index.php?rid=5297034&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500007%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Calendula officinalis L. and Camellia sinensis (L.) Kuntze presented antimicrobial activity against the adherence of microorganisms to sutures but were not as efficient as chlorhexidine digluconate. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297034 Sun, 09 Oct 2011 04:44:08 +0100 5297034 http://www.medworm.com/index.php?rid=5297033&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500006%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: There was a decreasing ability for smear layer removal and dentin tubule widening as follows: AC>TC-HCl>PA>EDTA. This information can be of value as an extra parameter for choosing one of them for root conditioning. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297033 Sun, 09 Oct 2011 04:44:08 +0100 5297033 http://www.medworm.com/index.php?rid=5297032&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500005%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Correlating the clinical and radiographic findings, it was found that in the majority of teeth diagnosed by radiographic images as having enamel-dentin caries, no caries could be detected by clinical examination. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297032 Sun, 09 Oct 2011 04:44:08 +0100 5297032 http://www.medworm.com/index.php?rid=5297031&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500004%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: Neither the 1% NaOCl treatment nor the resin luting agents caused any alterations in the dental substrate that could have influenced the marginal adaptation of composite onlays in primary teeth. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297031 Sun, 09 Oct 2011 04:44:08 +0100 5297031 http://www.medworm.com/index.php?rid=5297030&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500003%26lng%3Den%26nrm%3Diso%26tlng%3Den Radiotherapy, alone or associated with surgery or chemotherapy, produces a significant increase in cure rates for many malignancies of the head and neck region. However, high doses of radiation in large areas, including the oral mucosa, may result in several undesired reactions that manifest during or after the completion of therapy. The multidisciplinary management is the best alternative to minimize or even prevent such reactions, and the dentist has a fundamental role in this context. This paper reviews the literature related to the main oral sequelae from head and neck radiotherapy and establishes clinical oral management protocol for these irradiated patients. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297030 Sun, 09 Oct 2011 04:44:08 +0100 5297030 http://www.medworm.com/index.php?rid=5297029&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500002%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: AMSTAR evaluation of the methodological quality of the relatively small number of systematic reviews published in JAOS illustrated that there was room for improvement. Pre-publication and editorial appraisal of future systematic reviews might beneft from the application of tools such as AMSTAR and is to be recommended. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297029 Sun, 09 Oct 2011 04:44:08 +0100 5297029 http://www.medworm.com/index.php?rid=5297028&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000500001%26lng%3Den%26nrm%3Diso%26tlng%3Den (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5297028 Sun, 09 Oct 2011 04:44:08 +0100 5297028 http://www.medworm.com/index.php?rid=5260769&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400022%26lng%3Den%26nrm%3Diso%26tlng%3Den Angle Class III malocclusion has been a challenge for researchers concerning diagnosis, prognosis and treatment. It has a prevalence of 5% in the Brazilian population, and may have a genetic or environmental etiology. This malocclusion can be classified as dentoalveolar, skeletal or functional, which will determine the prognosis. Considering these topics, the aim of this study was to describe and discuss a clinical case with functional Class III malocclusion treated by a two-stage approach (interceptive and corrective), with a long-term follow-up. In this case, the patient was treated with a chincup and an Eschler arch, used simultaneously during 14 months, followed by corrective orthodontics. It should be noticed that, in this case, initial diagnosis at the centric relation allowed visual... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260769 Thu, 29 Sep 2011 04:11:45 +0100 5260769 http://www.medworm.com/index.php?rid=5260768&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400021%26lng%3Den%26nrm%3Diso%26tlng%3Den Facial trauma can be considered one of the most serious aggressions found in the medical centers due to the emotional consequences and the possibility of deformity. In craniofacial surgery, the use of autologous bone is still the first choice for reconstructing bony defects or irregularities. When there is a shortage of donor bone or a patient refuses an intracranial operation, alloplastic materials such as polymethylmethacrylate (PMMA) can be used. The PMMA prosthesis can be pre-fabricated, bringing advantages such as reduction of surgical time, easy technical handling and good esthetic results. This paper describes the procedures for rehabilitating a patient with PMMA implants in the region of the face, recovering the facial contours and esthetics of the patient. (Source: Journal of Appl... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260768 Thu, 29 Sep 2011 04:11:45 +0100 5260768 http://www.medworm.com/index.php?rid=5260767&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400020%26lng%3Den%26nrm%3Diso%26tlng%3Den The objective of this work was to evaluate, using radiographic images, the behavior of four materials used to repair root perforations in dogs' teeth. Material and METHODS: Second and third premolars of 6 dogs were used. The 48 teeth were randomly divided into 4 groups (n=12) and the perforations were sealed with one of the following materials: MTA, AH Plus, Vitremer and gutta-percha. Dogs were submitted to general anesthesia, teeth were radiographed and pulp was accessed. Perforations were done, at the maximum curve of the pulp floor, sealed and the accessed coronal cavity was filled with glass ionomer cement (Vidrion R). After 90 days, the dogs were sacrificed and the last x-ray image was taken. Images were analyzed for the presence/absence of periodontal lesions at the perforation regio... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260767 Thu, 29 Sep 2011 04:11:45 +0100 5260767 http://www.medworm.com/index.php?rid=5260766&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400019%26lng%3Den%26nrm%3Diso%26tlng%3Den Conclusion: Although internal connections present a more favorable design, this study did not show any advantage in terms of strength. The external hexagon connector used in this study yielded similar results to those obtained in a previous study with Nobel Biocare and Straumann systems. However, the internal connections (cone-in-cone and internal hexagon) were mechanically inferior compared to previous results. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260766 Thu, 29 Sep 2011 04:11:45 +0100 5260766 http://www.medworm.com/index.php?rid=5260765&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400018%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: The aim of this study was to compare the polimerization ability of three different light-curing units (quartz tungsten halogen, light-emitting diodes and plasma arc) and their exposure modes (high-intensity and soft-start) by determination of microhardness, water sorption and solubility, and diametral tensile strength of 5 dual-curing resin cements. Material and methods: A total of 720 disc-shaped samples (1 mm height and 5 mm diameter) were prepared from different dual-curing resin cements (Duolink, Nexus, Bifix-QM, Panavia F and RelyX Unicem). Photoactivation was performed by using quartz tungsten halogen (high-power and soft-up modes), light-emitting diode (standard and exponential modes) and plasma arc (normal and ramp-curing modes) curing units through ceramic discs. Then t... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260765 Thu, 29 Sep 2011 04:11:45 +0100 5260765 http://www.medworm.com/index.php?rid=5260764&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400017%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: It appears that sealant placement was effective in preventing dental caries development. Moreover, the variables "risk" and "sealant placement" were predictors for DMFT increment in the studied children. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260764 Thu, 29 Sep 2011 04:11:45 +0100 5260764 http://www.medworm.com/index.php?rid=5260763&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400016%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: This in vitro study aimed to evaluate the influence of different surface treatments, 3 luting agents and thermocycling on microtensile bond strength (µTBS) to zirconia ceramic. Material and METHODS: A total of 18 blocks (5x5x4 mm) were fabricated from zirconia ceramic (ICE Zirkonia) and duplicated into composite blocks (Alphadent). Ceramic blocks were divided into 3 groups (n=6) according to the following surface treatments: airborne-particle abrasion (AA), silica-coating, (SC) (CoJet) and silica coating followed by silane application (SCSI) (ESPE Sil). Each group was divided into 3 subgroups (n=2) according to the 3 luting agents used. Resin-modified glass-ionomer cement (RMGIC, Ketac Cem Plus), self-adhesive resin cement (UN, RelyX Unicem) and adhesive resin cement (ML, Multi... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260763 Thu, 29 Sep 2011 04:11:45 +0100 5260763 http://www.medworm.com/index.php?rid=5260762&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400015%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION:The results of the present study suggest a higher Candida adherence of samples isolated from patients with chronic periodontitis. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260762 Thu, 29 Sep 2011 04:11:45 +0100 5260762 http://www.medworm.com/index.php?rid=5260761&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400014%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: The low frequency of detection of HPV DNA in OSCC indicates a possible participation of the virus in the development and progression of only a subgroup of these tumors. There was no association between the immunohistochemical labeling for Langerhans cells (S-100+) and HPV infection of in OSSC. These findings suggest that the presence of HPV in such OSCC cases could not alter the immunological system, particularly the Langerhans cells. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260761 Thu, 29 Sep 2011 04:11:45 +0100 5260761 http://www.medworm.com/index.php?rid=5260760&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400013%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: It was found that relevant guidelines for RBC preparations were not being fully adhered to in private practice in Jordan. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260760 Thu, 29 Sep 2011 04:11:45 +0100 5260760 http://www.medworm.com/index.php?rid=5260759&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400012%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: The aims of this study were to evaluate the tensile bond strengths between indirect composites and dentin of 3 recently developed self-adhesive resin cements and to determine mode of failure by SEM. MATERIAL AND METHODS: Exposed dentin surfaces of 70 mandibular third molars were used. Teeth were randomly divided into 7 groups: Group 1 (control group): direct composite resin restoration (Alert) with etch-and-rinse adhesive system (Bond 1 primer/adhesive), Group 2: indirect composite restoration (Estenia) luted with a resin cement (Cement-It) combined with the same etch-and-rinse adhesive, Group 3: direct composite resin restoration with self-etch adhesive system (Nano-Bond), Group 4: indirect composite restoration luted with the resin cement combined with the same self-etch adhes... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260759 Thu, 29 Sep 2011 04:11:45 +0100 5260759 http://www.medworm.com/index.php?rid=5260758&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400011%26lng%3Den%26nrm%3Diso%26tlng%3Den During post preparation, the root canal is exposed to the oral cavity, and endodontic treatment may fail because of coronal leakage, bacterial infection and sealing inability of the luting cement. OBJECTIVE: this study quantified the interfacial continuity produced with conventional dual-cure and self-adhesive resin cements in the cervical (C), medium (M) and apical (A) thirds of the root. MATERIAL AND METHODS: Forty single-rooted human teeth were restored using Reforpost # 01 conical glass-fiber posts and different materials (N=10 per group): group AC=Adper™ ScotchBond™ Multi-purpose Plus + AllCem; group ARC=Adper™ ScotchBond™ Multi-purpose Plus + RelyX ARC; group U100=RelyX U100; and group MXC=Maxcem Elite. After being kept in 100% humidity at 37°C for 72 hours, the samples were... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260758 Thu, 29 Sep 2011 04:11:45 +0100 5260758 http://www.medworm.com/index.php?rid=5260757&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400010%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: The aim of this study was to investigate the ability of two NiTi rotary apical preparation techniques used with an electronic apex locator-integrated endodontic motor and a manual technique to create an apical stop at a predetermined level (0.5 mm short of the apical foramen) in teeth with disrupted apical constriction, and to evaluate microleakage following obturation in such prepared teeth. MATERIAL AND METHODS: 85 intact human mandibular permanent incisors with single root canal were accessed and the apical constriction was disrupted using a #25 K-file. The teeth were embedded in alginate and instrumented to #40 using rotary Lightspeed or S-Apex techniques or stainless-steel K-files. Distance between the apical foramen and the created apical stop was measured to an accuracy o... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260757 Thu, 29 Sep 2011 04:11:45 +0100 5260757 http://www.medworm.com/index.php?rid=5260756&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400009%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: The aim of this study was to evaluate whether vertical facial patterns influence maximal occlusal force (MOF), masticatory muscle electromyographic (EMG) activity, and medial mandibular flexure (MMF). MATERIAL AND METHODS: Seventy-eight dentate subjects were divided into 3 groups by Ricketts's analysis: brachyfacial, mesofacial and dolychofacial. Maximum occlusal force in the molar region was bilaterally measured with a force transducer. The electromyographic activities of the masseter and anterior temporal muscles were recorded during maximal voluntary clenching. Medial mandibular flexure was calculated by subtracting the intermolar distance of maximum opening or protrusion from the distance in the rest position. The data were analyzed using ANOVA followed by Tukey's HSD test. ... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260756 Thu, 29 Sep 2011 04:11:45 +0100 5260756 http://www.medworm.com/index.php?rid=5260755&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400008%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: The physicochemical properties of hydroxyapatite (HA) granules were observed to affect the biological behavior of graft materials. The aim of this work was to analyze the tissue response of two HA granules with different crystallinity and Ca/P ratio in vivo. MATERIAL AND METHODS: The HA granules were produced in the Biomaterials Laboratory (COPPE/UFRJ). The testing materials were HA granules presenting a Ca/P molar ratio of 1.60 and 28% crystallinity (HA-1), and a Ca/P molar ratio of 1.67 and 70% crystallinity (HA-2). Both HAs were implanted into a critical-size calvaria rat defects. RESULTS: To note, in the control group, the bone defects were filled with blood clot only. Descriptive and histomorphometric analyses after 1, 3, and 6 months postoperatively showed mild inflammator... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260755 Thu, 29 Sep 2011 04:11:45 +0100 5260755 http://www.medworm.com/index.php?rid=5260754&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400007%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: The results suggest that Sealapex Plus is biocompatible and stimulates the mineralization of the tissue. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260754 Thu, 29 Sep 2011 04:11:45 +0100 5260754 http://www.medworm.com/index.php?rid=5260753&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400006%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVES: To evaluate the sealing ability of five root canal sealers, including two experimental cements (MBP and MTA-Obtura) using the fluid filtration method. MATERIAL AND METHODS: Teeth were divided into 5 study groups: G1-AH Plus; G2-Acroseal; G3Sealapex; G4-MBP; G5-MTA-Obtura; and two controls. Chemical-mechanical preparation was performed with ProFile rotary nickel-titanium instruments 1 mm short of the apical foramen. The sealing ability was evaluated by fluid filtration at 15, 30, and 60 days. RESULTS: The statistical analysis showed significant difference between the materials at different periods (p Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260753 Thu, 29 Sep 2011 04:11:45 +0100 5260753 http://www.medworm.com/index.php?rid=5260752&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400005%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: The aim of this study was to evaluate the capacity of potassium oxalate, fluoride gel and two kinds of propolis gel to reduce the hydraulic conductance of dentin, in vitro. MATERIAL AND METHODS: The methodology used for the measurement of hydraulic conductance of dentin in the present study was based on a model proposed in literature. Thirty-six 1-mm-thick dentin discs, obtained from extracted human third molars were divided into 4 groups (n=9). The groups corresponded to the following experimental materials: GI-10% propolis gel, pH 4.1; GII-30% propolis gel; GIII-3% potassium oxalate gel, pH 4,1; and GIV-1.23% fluoride gel, pH 4.1, applied to the dentin under the following surface conditions: after 37% phosphoric acid and before 6% citric acid application. The occluding capacit... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260752 Thu, 29 Sep 2011 04:11:45 +0100 5260752 http://www.medworm.com/index.php?rid=5260751&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400004%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: There are significant variations in torque values of some of the brackets assessed, which would clinically compromise the buccolingual positioning of the tooth at the end of orthodontic treatment. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260751 Thu, 29 Sep 2011 04:11:45 +0100 5260751 http://www.medworm.com/index.php?rid=5260750&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400003%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVES: Residual methyl methacrylate (MMA) may leach from the acrylic resin denture bases and have adverse effects on the oral mucosa. This in vitro study evaluated and correlated the effect of the leaching residual MMA concentrations ([MMA]r) on in vitro cytotoxicity of L-929 fibroblasts. MATERIAL AND METHODS: A total of 144 heat-polymerized acrylic resin specimens were fabricated using 4 different polymerization cycles: (1) at 74ºC for 9 h, (2) at 74ºC for 9 h and terminal boiling (at 100ºC) for 30 min, (3) at 74ºC for 9 h and terminal boiling for 3 h, (4) at 74ºC for 30 min and terminal boiling for 30 min. Specimens were eluted in a complete cell culture medium at 37ºC for 1, 2, 5 and 7 days. [MMA]r in eluates was measured using high-performance liquid chromatography. In vitro... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260750 Thu, 29 Sep 2011 04:11:45 +0100 5260750 http://www.medworm.com/index.php?rid=5260749&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400002%26lng%3Den%26nrm%3Diso%26tlng%3Den Titanium reacts strongly with elements, mainly oxygen at high temperature. The high temperature of titanium laser welding modifies the surface, and may interfere on the metal-ceramic tensile bond strength. OBJECTIVE: The influence of laser welding on the titanium-ceramic bonding has not yet been established. The purpose of this in vitro study was to analyze the influence of laser welding applied to commercially pure titanium (CpTi) substructure on the bond strength of commercial ceramic. The influence of airborne particle abrasion (Al2O3) conditions was also studied. MATERIAL AND METHODS: Forty CpTi cylindrical rods (3 mm x 60 mm) were cast and divided into 2 groups: with laser welding (L) and without laser welding (WL). Each group was divided in 4 subgroups, according to the size of the p... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260749 Thu, 29 Sep 2011 04:11:45 +0100 5260749 http://www.medworm.com/index.php?rid=5260748&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000400001%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Microsurgical reconstruction of the jaws represents a valid treatment modality in patients with bisphosphonate-related osteonecrosis at 3rd stage of the disease. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=5260748 Thu, 29 Sep 2011 04:11:45 +0100 5260748 http://www.medworm.com/index.php?rid=4873282&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300019%26lng%3Den%26nrm%3Diso%26tlng%3Den This study aimed at assessing the effect of reduced curing time of five resin luting cements (RLCs) polymerized by high-power LED curing unit on the viability of a cell of L-929 fibroblast cells. MATERIAL AND METHODS: Disc-shaped samples were prepared in polytetrafluoroethylene moulds with cylindrical cavities. The samples were irradiated from the top through the ceramic discs and acetate strips using LED LCU for 20 s (50% of the manufacturer's recommended exposure time) and 40 s (100% exposure time). After curing, the samples were transferred into a culture medium for 24 h. The eluates were obtained and pipetted onto L-929 fibroblast cultures (3x10(4) per well) and incubated for evaluating after 24 h. Measurements were performed by dimethylthiazol diphenyltetrazolium assay. Statistical si... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873282 Sat, 28 May 2011 16:49:21 +0100 4873282 http://www.medworm.com/index.php?rid=4873281&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300018%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: The purposes of this study were to histologically assess different types of oral squamous cell carcinoma and the silver-binding nucleolar organizer region (AgNOR) morphology in neoplastic cells, as well as to quantify the number of AgNORs in each type of carcinoma in order to relate AgNOR count and histologic grading. MATERIAL AND METHODS: Twenty-eight cases of oral squamous cell carcinoma were divided into 4 groups, namely well-differentiated, moderately differentiated, poorly differentiated, and undifferentiated. For NOR study, 3-µm-thick sections were stained with 50% aqueous silver nitrate solution. The predominant microscopic pattern of NORs was determined. Quantitative analyses of NORs were obtained of all cells present on each histological field using a 0.025 mm² eyepie... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873281 Sat, 28 May 2011 16:49:21 +0100 4873281 http://www.medworm.com/index.php?rid=4873280&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300017%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: Some factors such as gender, age, craniofacial morphology, body structure, occlusal contact patterns may affect the maximum bite force. Thus, the purposes of this study were to determine the mean maximum bite force in individuals with normal occlusion, and to examine the effect of gender, facial dimensions, body mass index (BMI), type of functional occlusion (canine guidance and group function occlusion) and balancing side interferences on it. MATERIAL AND METHODS: Thirty-four individuals aged 19-20 years-old were selected for this study. Maximum bite force was measured with strain-gauge transducers at first molar region. Facial dimensions were defined by standardized frontal photographs as follows: anterior total facial height (ATFH), bizygomathic facial width (BFW) and intergo... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873280 Sat, 28 May 2011 16:49:21 +0100 4873280 http://www.medworm.com/index.php?rid=4873279&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300016%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: According to the studied cases, the cell block method was proven to be a simple, fast and low-cost technique to effectively differentiate KOTs from other lesions with similar clinical and radiographic features. The cell block technique comprises cellular preparations useful to determine a clinical diagnosis and help to develop a therapeutic plan for those lesions. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873279 Sat, 28 May 2011 16:49:21 +0100 4873279 http://www.medworm.com/index.php?rid=4873278&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300015%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: These findings indicate that rat sockets with experimentally induced infection produced higher levels of serum CRP, showing the potential of disseminated infection and a disturb in the alveolar repair process in an interesting experimental model for alveolitis studies. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873278 Sat, 28 May 2011 16:49:21 +0100 4873278 http://www.medworm.com/index.php?rid=4873277&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300014%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Under the tested experimental conditions and based on the obtained results, it may be concluded that the aqueous AgNO3 solutions: have neutral/alkaline pH and service life of up to 168 h; the level of ionic silver is proportional to the concentration of the solution; even at 5% concentration, the solutions were capable of indicating loss of marginal seal in the composite restorations; the 3-step conventional adhesive system had better performance regarding microleakage in enamel on primary and permanent teeth. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873277 Sat, 28 May 2011 16:49:21 +0100 4873277 http://www.medworm.com/index.php?rid=4873276&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300013%26lng%3Den%26nrm%3Diso%26tlng%3Den Denture fractures are common in daily practice, causing inconvenience to the patient and to the dentists. Denture repairs should have adequate strength, dimensional stability and color match, and should be easily and quickly performed as well as relatively inexpensive. OBJECTIVE: The aim of this study was to evaluate the flexural strength of acrylic resin repairs processed by different methods: warm water-bath, microwave energy, and chemical polymerization. MATERIAL AND METHODS: Sixty rectangular specimens (31x10x2.5 mm) were made with warm water-bath acrylic resin (Lucitone 550) and grouped (15 specimens per group) according to the resin type used to make repair procedure: 1) specimens of warm water-bath resin (Lucitone 550) without repair (control group); 2) specimens of warm water-bath ... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873276 Sat, 28 May 2011 16:49:21 +0100 4873276 http://www.medworm.com/index.php?rid=4873275&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300012%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: The concentration of choice for building the experimental model was 1/1. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873275 Sat, 28 May 2011 16:49:21 +0100 4873275 http://www.medworm.com/index.php?rid=4873274&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300011%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: The MC presents an overall satisfactory visibility on CBCT cross-sectional images in most cases. However, the discrimination of the canal from its surrounds becomes less obvious towards the mental foramen region when cross-sectional images are individually analyzed. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873274 Sat, 28 May 2011 16:49:21 +0100 4873274 http://www.medworm.com/index.php?rid=4873273&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300010%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: The aim of this study was to evaluate the effects of tribochemical silica coating and silane surface conditioning on the bond strength of rebonded metal and ceramic brackets. MATERIAL AND METHODS: Twenty debonded metal and 20 debonded ceramic brackets were randomly assigned to receive one of the following surface treatments (n=10 for each group): (1) sandblasting (control); (2) tribochemical silica coating combined with silane. Brackets were rebonded to the enamel surface on the labial and lingual sides of premolars with a light-polymerized resin composite. All specimens were stored in distilled water for 1 week and then thermocycled (5,000 cycles) between 5-55ºC. Shear bond strength values were measured using a universal testing machine. Student's t-test was used to compare th... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873273 Sat, 28 May 2011 16:49:21 +0100 4873273 http://www.medworm.com/index.php?rid=4873272&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300009%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: The aim of the present study was to evaluate the radiopacity of Portland and MTA-based cements using the Digora TM digital radiographic system. MATERIAL AND METHODS: The performed tests followed specification number 57 from the American National Standard Institute/American Dental Association (2000) for endodontic sealing materials. The materials were placed in 5 acrylic plates, especially designed for this experiment, along with a graduated aluminum stepwedge varying from 1 to 10 mm in thickness. The set was radiographed at a 30 cm focus-object distance and with 0.2 s exposure time. After the radiographs were taken, the optical laser readings of radiographs were performed by Digora TM system. Five radiographic density readings were performed for each studied material and for eac... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873272 Sat, 28 May 2011 16:49:21 +0100 4873272 http://www.medworm.com/index.php?rid=4873271&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300008%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVES: The present study evaluated comparatively the surface roughness of four orthodontic band cements after storage in various solutions. MATERIAL AND METHODS: Eight standardized cylinders were made from 4 materials: zinc phosphate cement (ZP), compomer (C), resin-modified glass ionomer cement (RMGIC) and resin cement (RC). Specimens were stored for 24 h in deionized water and immersed in saline (pH 7.0) or 0.1 M lactic acid solution (pH 4.0) for 15 days. Surface roughness readings were taken with a profilometer (Surfcorder SE1200) before and after the storage period. Data were analyzed by two-way ANOVA and Tukey's test (comparison among cements and storage solutions) or paired t-test (comparison before and after the storage period) at 5% significance level. RESULTS: The values for ... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873271 Sat, 28 May 2011 16:49:21 +0100 4873271 http://www.medworm.com/index.php?rid=4873270&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300007%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: These results suggest that Bis-GMA has cytotoxic effects, though dental pulp exposed to lower concentrations is able to recover their viability when Bis-GMA is removed. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873270 Sat, 28 May 2011 16:49:21 +0100 4873270 http://www.medworm.com/index.php?rid=4873269&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300006%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Children with autism exhibited a higher caries prevalence, poor oral hygiene and extensive unmet needs for dental treatment than non-autistic healthy control group. Thus oral health program that emphasizes prevention should be considered of particular importance for children and young people with autism. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873269 Sat, 28 May 2011 16:49:21 +0100 4873269 http://www.medworm.com/index.php?rid=4873268&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300005%26lng%3Den%26nrm%3Diso%26tlng%3Den This study evaluated the influence of light sources and immersion media on the color stability of a nanofilled composite resin. MATERIAL AND METHODS: Conventional halogen, high-power-density halogen and high-power-density light-emitting diode (LED) units were used. There were 4 immersion media: coffee, tea, Coke® and artificial saliva. A total of 180 specimens (10 mm x 2 mm) were prepared, immersed in artificial saliva for 24 h at 37±1ºC, and had their initial color measured with a spectrophotometer according to the CIELab system. Then, the specimens were immersed in the 4 media during 60 days. Data from the color change and luminosity were collected and subjected to statistical analysis by the Kruskall-Wallis test (p Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873268 Sat, 28 May 2011 16:49:21 +0100 4873268 http://www.medworm.com/index.php?rid=4873267&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300004%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: The digital imaging technique for reproducing irides presented better color stability after microwave polymerization. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873267 Sat, 28 May 2011 16:49:21 +0100 4873267 http://www.medworm.com/index.php?rid=4873266&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300003%26lng%3Den%26nrm%3Diso%26tlng%3Den The objectives of this study were to evaluate the presence of amino groups on acrylic resin surface and the influence on flexural strength after incorporation of TBAEMA. MATERIAL AND METHODS: Six groups were divided according to the concentration of TBAEMA incorporated to acrylic resin (Lucitone 550): 0, 0.5, 1.0, 1.5, 1.75 and 2%. Specimens surface were evaluated by Electron Spectroscopy for Chemical Analysis (ESCA) to detect the presence of amino groups, represented by nitrogen ratios. Flexural strength of the specimens was tested and results were analyzed by ANOVA and Tukey's test (α=0.05). RESULTS: Different nitrogen ratios were observed on specimen surfaces: 0, 0.13, 0.74, 0.66, 0.92 and 0.33% for groups 0, 0.5, 1.0, 1.5, 1.75, and 2%, respectively. Significant differences were found... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873266 Sat, 28 May 2011 16:49:21 +0100 4873266 http://www.medworm.com/index.php?rid=4873265&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300002%26lng%3Den%26nrm%3Diso%26tlng%3Den SHED (stem cells from human exfoliated deciduous teeth) represent a population of postnatal stem cells capable of extensive proliferation and multipotential differentiation. Primary teeth may be an ideal source of postnatal stem cells to regenerate tooth structures and bone, and possibly to treat neural tissue injury or degenerative diseases. SHED are highly proliferative cells derived from an accessible tissue source, and therefore hold potential for providing enough cells for clinical applications. In this review, we describe the current knowledge about dental pulp stem cells and discuss tissue engineering approaches that use SHED to replace irreversibly inflamed or necrotic pulps with a healthy and functionally competent tissue that is capable of forming new dentin. (Source: Journal of ... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873265 Sat, 28 May 2011 16:49:21 +0100 4873265 http://www.medworm.com/index.php?rid=4873264&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000300001%26lng%3Den%26nrm%3Diso%26tlng%3Den (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4873264 Sat, 28 May 2011 16:49:21 +0100 4873264 http://www.medworm.com/index.php?rid=4790375&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200016%26lng%3Den%26nrm%3Diso%26tlng%3Den Pleomorphic adenoma (PA), the most common salivary gland tumor, accounts for 54 to 65% of all salivary gland neoplasias and 80% of the benign salivary gland tumors. It most frequently affects the parotid gland, followed by the submandibular and the minor salivary glands. Microscopically, mucous, sebaceous, oncocytic and squamous metaplasia, sometimes with the formation of keratin pearls, may be present, but the latter rarely results in the formation of extensive keratin-flled cysts lined by squamous epithelium. Extensive squamous metaplasia can be mistaken for malignancy, including mucoepidermoid carcinoma and squamous cell carcinoma. Here, we present an unusual case of PA with extensive squamous metaplasia and keratin cyst formations in a minor salivary gland, and discuss its microscopic ... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790375 Fri, 06 May 2011 16:12:48 +0100 4790375 http://www.medworm.com/index.php?rid=4790374&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200015%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: There were alterations in the facial measurements, without interference of the breathing pattern. However, the breathing pattern infuenced dental alterations. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790374 Fri, 06 May 2011 16:12:48 +0100 4790374 http://www.medworm.com/index.php?rid=4790373&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200014%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: In the studied age range, anterior maxillary length increased from 10 to 12 years of age, males had larger maxillary depth than females and the predominant arch form was elliptical. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790373 Fri, 06 May 2011 16:12:48 +0100 4790373 http://www.medworm.com/index.php?rid=4790372&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200013%26lng%3Den%26nrm%3Diso%26tlng%3Den This study evaluated the association between breastfeeding and non-nutritive sucking patterns and the prevalence of anterior open bite in primary dentition. MATERIAL AND METHODS: Infant feeding and non-nutritive sucking were investigated in a 3-6 year-old sample of 1,377 children, from São Paulo city, Brazil. Children were grouped according to breastfeeding duration: G1 - non-breastfed, G2 - shorter than 6 months, G3 - interruption between 6 and 12 months, and G4 - longer than 12 months. Three calibrated dentists performed clinical examinations and classifed overbite into 3 categories: normal, anterior open bite and deep bite. Chi-square tests (p Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790372 Fri, 06 May 2011 16:12:48 +0100 4790372 http://www.medworm.com/index.php?rid=4790371&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200012%26lng%3Den%26nrm%3Diso%26tlng%3Den Indirect resin composites are generally regarded to have better color stability than direct resin composites since they possess higher conversion degree. OBJECTIVE: The present study aimed at comparing the changes in color (ΔE) and color coordinates (ΔL, Δa and Δb) of one direct (Estelite Sigma: 16 shades) and 2 indirect resin composites (BelleGlass NG: 16 shades; Sinfony: 26 shades) after thermocycling. MATERIAL AND METHODS: Resins were packed into a mold and light cured; post-curing was performed on indirect resins. Changes in color and color coordinates of 1-mm-thick specimens were determined after 5,000 cycles of thermocycling on a spectrophotometer. RESULTS: ΔE values were in the range of 0.3 to 1.2 units for direct resins, and 0.3 to 1.5 units for indirect resins, which were cli... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790371 Fri, 06 May 2011 16:12:48 +0100 4790371 http://www.medworm.com/index.php?rid=4790370&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200011%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: The experimental desensitizer gel formulation reduced dentin permeability as effectively as the original Gluma® Desensitizer solution. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790370 Fri, 06 May 2011 16:12:48 +0100 4790370 http://www.medworm.com/index.php?rid=4790369&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200010%26lng%3Den%26nrm%3Diso%26tlng%3Den In this study, the effect of the Piper betle L. extract towards S. mutans (with/without sucrose) using scanning electron microscopy (SEM) and on partially purifed cell-associated glucosyltransferase activity were determined. MATERIAL AND METHODS: S. mutans were allowed to adhere to glass beads suspended in 6 different Brain Heart Infusion broths [without sucrose; with sucrose; without sucrose containing the extract (2 mg mL-1 and 4 mg mL-1); with sucrose containing the extract (2 mg mL-1 and 4 mg mL-1)]. Positive control was 0.12% chlorhexidine. The glass beads were later processed for SEM viewing. Cell surface area and appearance and, cell population of S. mutans adhering to the glass beads were determined upon viewing using the SEM. The glucosyltransferase activity (with/without extract)... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790369 Fri, 06 May 2011 16:12:48 +0100 4790369 http://www.medworm.com/index.php?rid=4790368&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200009%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVES: The aim of this study was to evaluate the effects of non-surgical treatment of periodontal disease during the second trimester of gestation on adverse pregnancy outcomes. MATERIAL AND METHODS: Pregnant patients during the 1st and 2nd trimesters at antenatal care in a Public Health Center were divided into 2 groups: NIG - "no intervention" (n=17) or IG- "intervention" (n=16). IG patients were submitted to a non-surgical periodontal treatment performed by a single periodontist consisting of scaling and root planning (SRP), professional prophylaxis (PROPH) and oral hygiene instruction (OHI). NIG received PROPH and OHI during pregnancy and were referred for treatment after delivery. Periodontal evaluation was performed by a single trained examiner, blinded to periodontal treatment,... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790368 Fri, 06 May 2011 16:12:48 +0100 4790368 http://www.medworm.com/index.php?rid=4790367&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200008%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: HOXB5 is expressed in OSCCs and its role in cancer progression should be further investigated. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790367 Fri, 06 May 2011 16:12:48 +0100 4790367 http://www.medworm.com/index.php?rid=4790366&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200007%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Brazilian Afro-Caucasian subjects have greater dentoalveolar and soft tissue protrusion than Brazilian Caucasian subjects, with slight sexual dimorphism in some variables. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790366 Fri, 06 May 2011 16:12:48 +0100 4790366 http://www.medworm.com/index.php?rid=4790365&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200006%26lng%3Den%26nrm%3Diso%26tlng%3Den Nitric oxide (NO) has been considered a key molecule in infammation. OBJECTIVE: The aim of this study was to evaluate the effect of treatment with L-NAME and sodium nitroprussiate, substances that inhibit and release NO, respectively, on tissue tolerance to endodontic irrigants. MATERIAL AND METHODS: The vital dye exudation method was used in a rat subcutaneous tissue model. Injections of 2% Evans blue were administered intravenously into the dorsal penial vein of 14 male rats (200-300 g). The NO inhibitor and donor substances were injected into the subcutaneous tissue in the dorsal region, forming two groups of animals: G1 was inoculated with L-NAME and G2 with sodium nitroprussiate. Both groups received injections of the test endodontic irrigants: acetic acid, 15% citric acid, 17% EDTA-T... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790365 Fri, 06 May 2011 16:12:48 +0100 4790365 http://www.medworm.com/index.php?rid=4790364&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200005%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: It was concluded that 2.5% NaOCl and CLX were effective in eliminating E. coli. Only the studied intracanal medications were to reduce the amount of endotoxin present in the root canals, regardless of the irrigant used. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790364 Fri, 06 May 2011 16:12:48 +0100 4790364 http://www.medworm.com/index.php?rid=4790363&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200004%26lng%3Den%26nrm%3Diso%26tlng%3Den This study investigated the mechanical properties of glass ionomer cements (GICs) combined with propolis as a natural antimicrobial substance. MATERIAL AND METHODS: Typifed green propolis, as an ethanolic extract (EEP) or in the lyophilized form (powder), was incorporated to specimens of Ketac Fil Plus, ChemFlex and Ketac Molar Easymix GICs. For each test, 8 specimens of each material were prepared. For water sorption and solubility tests, specimens were subjected to dehydration, hydration and redehydration cycles until a constant mass was obtained for each step. Measurements were recorded using a digital balance of 10-4 g precision. For the diametral tensile strength test, specimens were tested in a universal test machine at 0.5 mm/min crosshead speed after 24 h storage in deionized water... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790363 Fri, 06 May 2011 16:12:48 +0100 4790363 http://www.medworm.com/index.php?rid=4790362&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200003%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: The aim of this study was to evaluate the fexural strength of two porcelain materials (IPS d.SIGN and IPS e.max Ceram) exposed to erosive agents. MATERIAL AND METHODS: One hundred and twenty bar-shaped specimens were made from each of fuorapatite-leucite porcelain (IPS d.SIGN) and fuorapatite porcelain (IPS e.max Ceram) and divided into 8 groups of 15 specimens each. Six groups were alternately immersed in the following storage agents for 30 min: deionized water (control), citrate buffer solution, pineapple juice, green mango juice, cola soft drink and 4% acetic acid. Then, they were immersed for 5 min in deionized water at 37ºC. Seven cycles were completed, totalizing 245 min. A 7th group was continuously immersed in 4% acetic acid at 80ºC for 16 h. The final, 8th, group was ... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790362 Fri, 06 May 2011 16:12:48 +0100 4790362 http://www.medworm.com/index.php?rid=4790361&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200002%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Salivary pH tended to be acidic while tongue coating pH tended to be alkaline, even after rising. Triclosan and essential oil mouthrinses increased salivary pH immediately after rinsing. Enzymatic solution decreased saliva and tongue coating pH immediately after rising. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790361 Fri, 06 May 2011 16:12:48 +0100 4790361 http://www.medworm.com/index.php?rid=4790360&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000200001%26lng%3Den%26nrm%3Diso%26tlng%3Den (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4790360 Fri, 06 May 2011 16:12:48 +0100 4790360 http://www.medworm.com/index.php?rid=4616655&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100016%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Within the limits of this study, it may be concluded that PRP failed to provide statistically significant improvements in the histometric parameters. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616655 Tue, 22 Mar 2011 16:36:58 +0100 4616655 http://www.medworm.com/index.php?rid=4616654&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100015%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: The curette-ultrasonic simultaneous instrumentation may combine the beneficial effects of each instrument in a single technique creating a root surface relatively free from the physical barrier of smear layer and dentin tubules orifices partial occlusion. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616654 Tue, 22 Mar 2011 16:36:58 +0100 4616654 http://www.medworm.com/index.php?rid=4616653&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100014%26lng%3Den%26nrm%3Diso%26tlng%3Den This study evaluated the effects of coronally positioned flap (CPF) on the subgingival biofilm composition. MATERIAL AND METHODS: Twenty-two subjects with gingival recessions were treated with CPF. Clinical parameters were assessed before and at 6 months after surgery. Subgingival biofilms were analyzed by checkerboard DNA-DNA hybridization technique for 40 bacterial species. RESULTS: Recession height, clinical attachment level and bleeding on probing improved significantly (p Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616653 Tue, 22 Mar 2011 16:36:58 +0100 4616653 http://www.medworm.com/index.php?rid=4616652&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100013%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: This methodology was effective in comparing unscrewing torque values of the implant-abutment junction even with a limited sample size. It confirmed a previously shown significant difference between two types of screws. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616652 Tue, 22 Mar 2011 16:36:58 +0100 4616652 http://www.medworm.com/index.php?rid=4616651&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100012%26lng%3Den%26nrm%3Diso%26tlng%3Den The objective this work was to assess the friction coefficient between brackets and wires of different materials under conditions simulating the oral environment. MATERIAL AND METHODS: Stainless steel (SS) and titanium-molybdenum alloy (TMA) wires of 0.019x0.025-in diameter (American Orthodontics) and polycarbonate bracket (American Orthodontics), ceramic bracket (American Orthodontics), and metal bracket (3M Unitek) with slots of 0.022x0.030-in were used. The friction coefficient was assessed by means of mechanical traction with the system immersed in artificial saliva. The mean roughness of both wire surface and bracket slots was evaluated by using a surface profilometer. RESULTS: The system using TMA wire and polycarbonate bracket had the highest roughness (p Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616651 Tue, 22 Mar 2011 16:36:58 +0100 4616651 http://www.medworm.com/index.php?rid=4616650&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100011%26lng%3Den%26nrm%3Diso%26tlng%3Den This study tested rat connective tissue response to RealSeal, RealSeal primer or AH Plus after 7, 15, 30, 60 and 90 days of implantation. MATERIAL AND METHODS: Thirty Wistar rats had subcutaneous sockets created on their back and received four implants each of polyethylene tubes containing one of the materials tested according to the groups: AH (AH Plus Sealer); RS (RealSeal Sealer); RP (RealSeal Primer); CG (control group - empty tube). After histological processing, sections were analyzed to identify the presence of neutrophils, lymphocytes and plasma cells, eosinophils, macrophages and giant cells, as well as fibrous capsule and abscesses, by an examiner using light microscope. Kruskal-Wallis and multiple-comparisons test were used for statistical analysis. Significance level was set at... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616650 Tue, 22 Mar 2011 16:36:58 +0100 4616650 http://www.medworm.com/index.php?rid=4616649&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100010%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: The best mechanical characteristics and modulus of elasticity value comparable to that of human trabecular bone were obtained when A/B ratio was 1:1. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616649 Tue, 22 Mar 2011 16:36:58 +0100 4616649 http://www.medworm.com/index.php?rid=4616648&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100009%26lng%3Den%26nrm%3Diso%26tlng%3Den Despite the advances in bonding materials, many clinicians today still prefer to place bands on molar teeth. Molar bonding procedures need improvement to be widely accepted clinically. OBJECTIVE: The purpose of this study was to evaluate the shear bond strength when an additional adhesive layer was applied on the occlusal tooth/tube interface to provide reinforcement to molar tubes. MATERIAL AND METHODS: Sixty third molars were selected and allocated to the 3 groups: group 1 received a conventional direct bond followed by the application of an additional layer of adhesive on the occlusal tooth/tube interface, group 2 received a conventional direct bond, and group 3 received a conventional direct bond and an additional cure time of 10 s. The specimens were debonded in a universal testing ma... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616648 Tue, 22 Mar 2011 16:36:58 +0100 4616648 http://www.medworm.com/index.php?rid=4616647&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100008%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: The following conclusions can be drawn: 1. there are at least two subtypes of patients with myofascial pain that respond differently to experimental chewing; 2. the chewing protocol had an adequate discriminative ability in distinguishing patients with myofascial pain from healthy controls. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616647 Tue, 22 Mar 2011 16:36:58 +0100 4616647 http://www.medworm.com/index.php?rid=4616646&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100007%26lng%3Den%26nrm%3Diso%26tlng%3Den This study investigated the effect of different ferrule heights on endodontically treated premolars. MATERIAL AND METHODS: Fifty sound mandibular first premolars were endodontically treated and then restored with 7-mm fiber post (FRC Postec Plus #1 Ivoclar-Vivadent) luted with self-polymerized resin cement (Multilink, Ivoclar Vivadent) while the coronal section was restored with hybrid composite core build-up material (Tetric Ceram, Ivoclar-Vivadent), which received all-ceramic crown. Different ferrule heights were investigated: 1-mm circumferential ferrule without post and core (group 1 used as control), a circumferential 1-mm ferrule (group 2), non-uniform ferrule 2-mm buccally and 1-mm lingually (group 3), non-uniform ferrule 3-mm buccally and 2-mm lingually (group 4), and finally no fe... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616646 Tue, 22 Mar 2011 16:36:58 +0100 4616646 http://www.medworm.com/index.php?rid=4616645&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100006%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Light overexposure did not compensate for light intensity attenuation due to the presence of SICR when Rely X and Eco-Link were used. Although hardness of such RCs increased over a 24-h interval, the RCs subjected to light overexposure did not reach the hardness values exhibited after direct light exposure. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616645 Tue, 22 Mar 2011 16:36:58 +0100 4616645 http://www.medworm.com/index.php?rid=4616644&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100005%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVES: The purpose of this in vitro study was to evaluate misfit alterations at the implant/abutment interface of external and internal connection implant systems when subjected to cyclic loading. MATERIAL AND METHODS: Standard metal crowns were fabricated for 5 groups (n=10) of implant/abutment assemblies: Group 1, external hexagon implant and UCLA cast-on premachined abutment; Group 2, internal hexagon implant and premachined abutment; Group 3, internal octagon implant and prefabricated abutment; Group 4, external hexagon implant and UCLA cast-on premachined abutment; and Group 5, external hexagon implant and Ceraone abutment. For groups 1, 2, 3 and 5, the crowns were cemented on the abutments and in group 4 crowns were screwed directly on the implant. The specimens were subjected t... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616644 Tue, 22 Mar 2011 16:36:58 +0100 4616644 http://www.medworm.com/index.php?rid=4616643&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100004%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: This method is potentially effective for inferior alveolar nerve block, especially in Pediatric Dentistry. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616643 Tue, 22 Mar 2011 16:36:58 +0100 4616643 http://www.medworm.com/index.php?rid=4616642&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100003%26lng%3Den%26nrm%3Diso%26tlng%3Den Candida spp. can lead to infections or even fungal sepsis particularly among immunocompromized individuals. OBJECTIVE: The aim of the present study was to analyze the presence of Candida spp. among patients subjected to orthotopic heart transplantation. MATERIAL AND METHODS: Oral rinses from 50 patients subjected to orthotopic heart transplantation, aged 13 to 70 years, 40 males and 10 females, were examined. Sex-age-oral conditions matched-control included 50 individuals who were not subjected to any kind of transplantation and were not immunocompromized for any other reason. Counts of yeasts were expressed as median values of logarithm of cfu/mL and were statistically compared by Mann-Whitney's test. The heart transplant and control groups were compared for the presence of Candida spp. b... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616642 Tue, 22 Mar 2011 16:36:58 +0100 4616642 http://www.medworm.com/index.php?rid=4616641&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100002%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: Hydroxyl (OH-) and calcium (Ca++) ion release was evaluated in six materials: G1) Sealer 26, G2) White mineral trioxide aggregate (MTA), G3) Epiphany, G4) Epiphany + 10% calcium hydroxide (CH), G5) Epiphany + 20% CH, and G6) zinc oxide and eugenol. MATERIAL AND METHODS: Specimens were placed in polyethylene tubes and immersed in distilled water. After 3, 6, 12, 24, and 48 h, 7, 14, and 28 days, the water was assessed for pH with a pH meter and for Ca++ release by atomic absorption spectrophotometry. RESULTS: G1, G2, G4, and G5 had the highest pH until 14 days (p Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616641 Tue, 22 Mar 2011 16:36:58 +0100 4616641 http://www.medworm.com/index.php?rid=4616640&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572011000100001%26lng%3Den%26nrm%3Diso%26tlng%3Den (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4616640 Tue, 22 Mar 2011 16:36:58 +0100 4616640 http://www.medworm.com/index.php?rid=4390151&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600019%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: Our orofacial findings correlate with the reported cases in the literature, and point out that after diagnosis GS patients need to be examined for systemic abnormalities. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390151 Mon, 24 Jan 2011 17:20:04 +0100 4390151 http://www.medworm.com/index.php?rid=4390150&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600018%26lng%3Den%26nrm%3Diso%26tlng%3Den This study assessed the color stability of acrylic resins used to fabricate sclera in three basic shades (N1, N2 and N3) when subjected to accelerated aging, mechanical and chemical polishing. MATERIAL AND METHODS: Specimens of each resin were fabricated and submitted to mechanical and chemical polishing. Chromatic analysis was performed before and after accelerated aging through ultraviolet reflection spectrophotometry. RESULTS: All specimens revealed color alteration following polishing and accelerated aging. The resins presented statistically significant chromatic alteration (p Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390150 Mon, 24 Jan 2011 17:20:04 +0100 4390150 http://www.medworm.com/index.php?rid=4390149&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600017%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVE: The aim of this study was to compare subgingival irrigation with tetracycline hydrochloride (TTC-HCL) as adjunctive treatment to scaling and root planning (SRP) on induced periodontitis in rats. MATERIAL AND METHODS: In 60 rats, periodontal disease was ligature-induced at the mandibular left first molar. After 7 days, the ligature was removed and all animals were submitted to SRP, and divided into 2 groups according to the following treatment: C (n=30) - subgingival irrigation with 1 mL of saline; T (n=30) - subgingival irrigation with 1 mL of TTC-HCL (50 mg/mL). Ten animals in each group were euthanized at 7, 15 and 30 days posttreatment. The histometric values were statistically analyzed (p Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390149 Mon, 24 Jan 2011 17:20:04 +0100 4390149 http://www.medworm.com/index.php?rid=4390148&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600016%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Histometric results confirmed that none of the tested drugs had a detrimental effect in the volume fraction of bone trabeculae formed inside the alveolar socket. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390148 Mon, 24 Jan 2011 17:20:04 +0100 4390148 http://www.medworm.com/index.php?rid=4390147&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600015%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: The proposed reference line could be useful in mixed dentition root angulation evaluation; there was a slight asymmetry in the mesiodistal angulation among homologous teeth, and also a small variation between the male and the female groups, but no difference between 8-and 10-year-old children. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390147 Mon, 24 Jan 2011 17:20:04 +0100 4390147 http://www.medworm.com/index.php?rid=4390146&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600014%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJETIVES: The aim of this study was to investigate through scanning electron microscopy (SEM) the cleaning of root canal walls after the use of experimental propolis or calcium hydroxide root canal dressings. MATERIAL AND METHODS: Twenty single-rooted teeth were used. After conventional cleaning and shaping procedures and removal of the smear layer with 17% EDTA, the teeth were divided into four groups according to the medication used (N=5): Group I (control) - No drug, Group II - Calcium hydroxide dressing, Group III - Propolis paste A70D and Group IV - Propolis paste D70D. The medications were introduced into the root canals and maintained for 7 days, then removed with a K-file and 5 mL of 1% sodium hypochlorite irrigation. Finally, the canals were flushed with 2 mL of 17% EDTA for 3 mi... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390146 Mon, 24 Jan 2011 17:20:04 +0100 4390146 http://www.medworm.com/index.php?rid=4390145&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600013%26lng%3Den%26nrm%3Diso%26tlng%3Den This study assessed and compared the immunoexpression of vascular endothelial growth factor (VEGF) and matrix metalloproteinase-9 (MMP-9) in radicular cysts (RCs) and residual radicular cysts (RRCs), relating them to the angiogenic index and the intensity of the inflammatory infiltrate. MATERIAL AND METHODS: Twenty RCs and 10 RRCs were evaluated by immunohistochemistry using anti-VEGF and anti-MMP-9 antibodies. The angiogenic index was determined by microvessel count (MVC) using anti-von Willebrand factor antibody. RESULTS: The expression of both VEGF and MMP-9 was higher in RCs than in RRCs. RCs and RRCs presented strong epithelial expression of VEGF, irrespective of the intensity of the inflammatory infiltrate. Lesions with strong expression of MMP-9 showed significantly higher number of... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390145 Mon, 24 Jan 2011 17:20:04 +0100 4390145 http://www.medworm.com/index.php?rid=4390144&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600012%26lng%3Den%26nrm%3Diso%26tlng%3Den Advances in all-ceramic systems have established predictable means of providing metal-free aesthetic and biocompatible materials. These materials must have sufficient strength to be a practical treatment alternative for the fabrication of crowns and fixed partial dentures. OBJECTIVES: The aim of this study was to compare the biaxial flexural strength of three core ceramic materials. MATERIAL AND METHODS: Three groups of 10 disc-shaped specimens (16 mm diameter x 1.2 mm thickness - in accordance with ISO-6872, 1995) were made from the following ceramic materials: Turkom-Cera Fused Alumina [(Turkom-Ceramic (M) Sdn Bhd, Puchong, Selangor, Malaysia)], In-Ceram (Vita Zahnfabrik, Bad Säckingen, Baden-Württemberg, Germany) and Vitadur-N (Vita Zahnfabrik, Bad Säckingen, Baden-Württemberg, Germ... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390144 Mon, 24 Jan 2011 17:20:04 +0100 4390144 http://www.medworm.com/index.php?rid=4390143&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600011%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: The use of PVP-I as an adjunct in the non-surgical treatment of interproximal class II furcation involvements provided limited additional clinical benefits. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390143 Mon, 24 Jan 2011 17:20:04 +0100 4390143 http://www.medworm.com/index.php?rid=4390142&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600010%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVES: The aims of this study were to evaluate the effect of resin composite (Filtek Z250 and Filtek Flow Z350) and adhesive system [(Solobond Plus, Futurabond NR (VOCO) and Adper Single Bond (3M ESPE)] on the microtensile (μTBS) and microshear bond strength (μSBS) tests on enamel, and to correlate the bond strength means between them. MATERIAL AND METHODS: Thirty-six extracted human molars were sectioned to obtain two tooth halves: one for μTBS and the other one for μSBS. Adhesive systems and resin composites were applied to the enamel ground surfaces and light-cured. After storage (37(0)C/24 h) specimens were stressed (0.5 mm/min). Fracture modes were analyzed under scanning electron microscopy. The data were analyzed using two-way ANOVA and Tukey's test (α=0.05). RESULTS: The ... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390142 Mon, 24 Jan 2011 17:20:04 +0100 4390142 http://www.medworm.com/index.php?rid=4390141&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600009%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: The surface roughness of composite resin materials are differently affected by the food-simulating solutions, depending on the immersion media. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390141 Mon, 24 Jan 2011 17:20:04 +0100 4390141 http://www.medworm.com/index.php?rid=4390140&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600008%26lng%3Den%26nrm%3Diso%26tlng%3Den Clinicians tend to make reductions in glass ionomer power/liquid (P/L) ratios since some materials are difficult to mix and flow into small cavities, grooves or pits. In general, changing the P/L ratio decreases the physical and mechanical properties of conventional glass ionomer cements (GICs) and resin modified glass ionomer cements (RMGICs), but alterations seem to depend on their composition. OBJECTIVE: To determine the influence of P/L ratio on the radiodensity and diametral tensile strength (DTS) of glass ionomer cements. MATERIAL AND METHODS: There were 2 factors under study: P/L ratio (manufacturer's recommended P/L ratio and a 50% reduced P/L ratio), and materials (Vitro Molar, Vitro Fil, Vitro Cem conventional GICs and Vitro Fil LC, Ortho Glass LC RMGICs. Five 1-mm-thick samples ... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390140 Mon, 24 Jan 2011 17:20:04 +0100 4390140 http://www.medworm.com/index.php?rid=4390139&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600007%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: It was possible to conclude that dental injuries are common during professional soccer practice and that there is a lack of information in the medical departments related to the emergency conducts and prevention of dental trauma. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390139 Mon, 24 Jan 2011 17:20:04 +0100 4390139 http://www.medworm.com/index.php?rid=4390138&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600006%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: Groups where lipstick was applied showed greater staining than the control group at the three evaluation times. The lipstick with ultra fixer stained more than the lipstick with common fixer. Time elapsed between photoactivation and contact with lipstick had a similar influence on the groups that received lipstick application. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390138 Mon, 24 Jan 2011 17:20:04 +0100 4390138 http://www.medworm.com/index.php?rid=4390137&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600005%26lng%3Den%26nrm%3Diso%26tlng%3Den This study evaluated the efficacy of NitrAdineTM-based disinfecting cleaning tablets for complete denture, in terms of denture biofilm removal and antimicrobial action. MATERIAL AND METHODS: Forty complete denture wearers (14 men and 26 women) with a mean age of 62.3±9.0 years were randomly assigned to two groups and were instructed to clean their dentures according to two methods: brushing (control) - 3 times a day with denture brush and tap water following meals; brushing and immersion (Experimental) - brushing the denture 3 times a day with denture brush and tap water following meals and immersion of the denture in NitrAdineTM-based denture tablets (Medical InterporousTM). Each method was used for 21 days. Denture biofilm was disclosed by a 1% neutral red solution and quantified by mea... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390137 Mon, 24 Jan 2011 17:20:04 +0100 4390137 http://www.medworm.com/index.php?rid=4390136&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600004%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: The results of this investigation confirmed that the oral cavity of patients with periodontitis and gingivitis, and particularly edentulous patients wearing complete dentures could harbor microorganisms with several antimicrobial resistance markers, and these microorganisms are frequently implicated in multiresistant, systemic, oral or nosocomial infections. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390136 Mon, 24 Jan 2011 17:20:04 +0100 4390136 http://www.medworm.com/index.php?rid=4390135&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600003%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: Repaired specimens showed lower flexural strength values than intact heat-curing resin. Cavity preparation had no significant effect on the flexural strength of repair with water immersion. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390135 Mon, 24 Jan 2011 17:20:04 +0100 4390135 http://www.medworm.com/index.php?rid=4390134&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600002%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: ProTaper Universal rotary had better results for endodontic retreatment, and both techniques promote similar apical extrusion of debris. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390134 Mon, 24 Jan 2011 17:20:04 +0100 4390134 http://www.medworm.com/index.php?rid=4390133&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000600001%26lng%3Den%26nrm%3Diso%26tlng%3Den (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4390133 Mon, 24 Jan 2011 17:20:04 +0100 4390133 http://www.medworm.com/index.php?rid=4180087&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500019%26lng%3Den%26nrm%3Diso%26tlng%3Den Pyogenic granuloma (PG) is a benign non-neoplastic mucocutaneous lesion. It is a reactional response to constant minor trauma and might be related to hormonal changes. In the mouth, PG is manifested as a sessile or pedunculated, resilient, erythematous, exophytic and painful papule or nodule with a smooth or lobulated surface that bleeds easily. PG preferentially affects the gingiva, but may also occur on the lips, tongue, oral mucosa and palate. The most common treatment is surgical excision. This paper describes a mucocutaneous PG on the upper lip, analyzing the clinical characteristics and discussing the features that distinguish this lesion from other similar oral mucosa lesions. The diagnosis of oral lesions is complex and leads the dentist to consider distinct lesions with different ... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180087 Fri, 19 Nov 2010 05:03:21 +0100 4180087 http://www.medworm.com/index.php?rid=4180086&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500018%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: The results suggest a promising role for diclofenac in hyaluronic acid gel in the treatment of AC. This treatment has the advantages of not being invasive and showing few side effects. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180086 Fri, 19 Nov 2010 05:03:21 +0100 4180086 http://www.medworm.com/index.php?rid=4180085&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500017%26lng%3Den%26nrm%3Diso%26tlng%3Den ABSTRACT OBJECTIVE: The aim of this study was to evaluate the effect of simulated periodontal ligament (SPDL) on custom cast dowel and core removal by ultrasonic vibration. MATERIAL AND METHODS: Thirty-two human maxillary canines were included in resin cylinders with or without SPDL made from polyether impression material. In order to allow tensile testing, the roots included in resin cylinders with SPDL were fixed to cylinders with two stainless steel wires. Post-holes were prepared by standardizing the length at 8 mm and root canal impressions were made with self-cured resin acrylic. Cast dowel and core sets were fabricated and luted with Panavia F resin cement. Half of the samples were submitted to ultrasonic vibration before the tensile test. Data were analyzed statistically by two-way... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180085 Fri, 19 Nov 2010 05:03:21 +0100 4180085 http://www.medworm.com/index.php?rid=4180084&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500016%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Mean values (n=10 drill sequences) for maximum recorded temperature (Max TºC), change in temperature (ΔTºC) from baseline were as follows. The changes in temperature (ΔTºC) were 1.57ºC and 2.46ºC for the lowest and the highest values, respectively. Drilling at 50 rpm without irrigation did not produce overheating. There was no significant difference in heat production between the 3 implant drill systems (p>0.05). No implant drill system produced heat exceeding 47ºC, which is the critical temperature for bone necrosis during low-speed drilling. Low-speed drilling without irrigation could be used during implant site preparation. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180084 Fri, 19 Nov 2010 05:03:21 +0100 4180084 http://www.medworm.com/index.php?rid=4180083&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500015%26lng%3Den%26nrm%3Diso%26tlng%3Den This study had a single-blind, randomized, split-mouth, 21 days-experimental gingivitis design, including 20 individuals who abandoned all mechanical plaque control methods during 25 days. After 4 days of plaque accumulation, the individuals had 2 randomized quadrants cleaned, remaining 2 quadrants with plaque-covered dental surfaces. On the fourth day, the individuals started with 0.12% CHX rinsing lasting for 21 days. Stain index intensity and extent as well as calculus formation were evaluated during the experimental period. RESULTS: Intergroup comparisons showed statistically higher (p Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180083 Fri, 19 Nov 2010 05:03:21 +0100 4180083 http://www.medworm.com/index.php?rid=4180082&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500014%26lng%3Den%26nrm%3Diso%26tlng%3Den ABSTRACT OBJECTIVE: To analyze and to quantify morphological acinar postmortem changes in rat sublingual glands (SLG). MATERIAL AND METHODSs: Fifty rats were divided into two groups of 25 animals each. Group I was used for morphological and morphometric evaluations and group II for the determination of gland density and processed gland volume. Acinar autolytic changes were studied at 0 (control group), 3, 6, 12 and 24 h postmortem periods. The morphometric analysis of the volume density (Vv) and total volume (Vt) of intact (ia) and autolyzed (aa) acini was performed under light microscopy using a Zeiss II integration grid with 100 symmetrically distributed points. RESULTS: Morphologically, temporal progressive nuclear alterations and gradual loss of the structural architecture of acinar ce... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180082 Fri, 19 Nov 2010 05:03:21 +0100 4180082 http://www.medworm.com/index.php?rid=4180081&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500013%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: Among the orthodontic adhesive analyzed, it may be concluded that Transbond XT exhibited the worst biocompatibility. However, one cannot interpret the specificity of the data generated in vivo animal models as a human response. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180081 Fri, 19 Nov 2010 05:03:21 +0100 4180081 http://www.medworm.com/index.php?rid=4180080&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500012%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: Under the conditions of this study Sterilox's Aquatine Alpha Electrolyte® appeared to have significantly more antimicrobial action compared to the Optident Sterilox Electrolyte Solution® alone, however NaOCl was the only solution able to consistently eradicate E. faecalis in the model. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180080 Fri, 19 Nov 2010 05:03:21 +0100 4180080 http://www.medworm.com/index.php?rid=4180079&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500011%26lng%3Den%26nrm%3Diso%26tlng%3Den ABSTRACT OBJECTIVE: The present study evaluated morphometrically bone loss percentages in experimental periodontitis in rats, comparing different locations (lingual mandible, palatal maxilla and buccal maxilla) and two evaluation methods (distance and area methods). MATERIAL AND METHODS: Ligatures were placed around the maxillary right second molar and around the mandibular right first molar in 14 female Wistar rats. The contralateral molars served as intragroup controls. After 4 weeks, the rats were sacrificed and their mandible and maxilla were removed. The specimens were dissected and stained with methylene blue dye. Bone loss was evaluated by two different methods on the surfaces of the defleshed jaw. In the first method, the distance from the cementoenamel junction (CEJ) to the alveol... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180079 Fri, 19 Nov 2010 05:03:21 +0100 4180079 http://www.medworm.com/index.php?rid=4180078&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500010%26lng%3Den%26nrm%3Diso%26tlng%3Den This study compared the occurrence of porosities and the retentive force of commercially pure titanium (CP Ti) and cobalt-chromium (Co-Cr) removable partial denture circumferential clasps cast by induction/centrifugation and plasma/vacuum-pressure. MATERIAL AND METHODS: 72 frameworks were cast from CP Ti (n=36) and Co-Cr alloy (n=36; control group). For each material, 18 frameworks were casted by electromagnetic induction and injected by centrifugation, whereas the other 18 were casted by plasma and injected by vacuum-pressure. For each casting method, three subgroups (n=6) were formed: 0.25 mm, 0.50 mm, and 0.75 mm undercuts. The specimens were radiographed and subjected to an insertion/removal test simulating 5 years of framework use. Data were analyzed by ANOVA and Tukey's to compare ma... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180078 Fri, 19 Nov 2010 05:03:21 +0100 4180078 http://www.medworm.com/index.php?rid=4180077&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500009%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSIONS: The present results suggest that the promoter sequences analyzed are not sufficient to drive PAX9 gene transcription. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180077 Fri, 19 Nov 2010 05:03:21 +0100 4180077 http://www.medworm.com/index.php?rid=4180076&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500008%26lng%3Den%26nrm%3Diso%26tlng%3Den OBJECTIVES: The aim of this study was to evaluate the influence of two adhesive systems and the post space region on the degree of conversion of dual resin cement and its bond strength to root dentin. MATERIAL AND METHODS: One three-step etch-and-rinse (All-bond 2, Bisco) and another one-step self-etch (Xeno III, Dentsply) adhesive systems were applied on 20 (n=10) crownless bovine incisors, at 12-mm-deep post space preparation, and a fiber post (DT Light Post, Bisco) was cemented using a dual cure resin cement (Duo-Link, Bisco). Three transverse sections (3 mm) were obtained, being one from each study region (cervical, middle and apical). The degree of conversion of the dual cure resin cement was determined by a micro-Raman spectrometer. The data (%) were submitted to repeated-measures an... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180076 Fri, 19 Nov 2010 05:03:21 +0100 4180076 http://www.medworm.com/index.php?rid=4180075&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500007%26lng%3Den%26nrm%3Diso%26tlng%3Den In the most recent decades, several developments have been made on impression materials' composition, but there are very few radiodensity studies in the literature. It is expected that an acceptable degree of radiodensity would enable the detection of small fragments left inside gingival sulcus or root canals. OBJECTIVE: The aim of this study was to determine the radiodensity of different impression materials, and to compare them to human and bovine enamel and dentin. MATERIAL AND METHODS: Twenty-five impression materials, from 5 classes, were studied: addition and condensation silicones, polyether, polysulfides and alginates. Five 1-mm-thick samples of each material and tooth structure were produced. Each sample was evaluated 3 times (N=15), being exposed to x-ray over a phosphor plate of... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180075 Fri, 19 Nov 2010 05:03:21 +0100 4180075 http://www.medworm.com/index.php?rid=4180074&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500006%26lng%3Den%26nrm%3Diso%26tlng%3Den This in vitro study evaluated the cytotoxicity of an experimental restorative composite resin subjected to different light-curing regimens. METHODS: Forty round-shaped specimens were prepared and randomly assigned to four experimental groups (n=10), as follows: in Group 1, no light-curing; in Groups 2, 3 and 4, the composite resin specimens were light-cured for 20, 40 or 60 s, respectively. In Group 5, filter paper discs soaked in 5 µL PBS were used as negative controls. The resin specimens and paper discs were placed in wells of 24-well plates in which the odontoblast-like cells MDPC-23 (30,000 cells/cm²) were plated and incubated in a humidified incubator with 5% CO2 and 95% air at 37ºC for 72 h. The cytotoxicity was evaluated by the cell metabolism (MTT assay) and cell morphology (SE... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180074 Fri, 19 Nov 2010 05:03:21 +0100 4180074 http://www.medworm.com/index.php?rid=4180073&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500005%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: Conventional and resin-modified glass ionomer cements as well as neutral and acidulated fluoride gels inhibit the progression of artificial caries adjacent to restorations. The associated effect of fluoride-containing restorative materials and gels could not be demonstrated. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180073 Fri, 19 Nov 2010 05:03:21 +0100 4180073 http://www.medworm.com/index.php?rid=4180072&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500004%26lng%3Den%26nrm%3Diso%26tlng%3Den CONCLUSION: These findings demonstrate that sexual harassment can occur in a dental school setting. There is a need for ongoing sexual harassment education programs for students and university staff. Increased knowledge of sexual harassment during graduation can better prepare dental professionals to respond to sexual harassment during their practice. (Source: Journal of Applied Oral Science) Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180072 Fri, 19 Nov 2010 05:03:21 +0100 4180072 http://www.medworm.com/index.php?rid=4180071&cid=s_37435_11_f&fid=37435&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS1678-77572010000500003%26lng%3Den%26nrm%3Diso%26tlng%3Den This study analyzed the degree of conversion (DC%) of four resin-based cements (All Ceram, Enforce, Rely X ARC and Variolink II) activated by two modes (chemical and dual), and evaluated the decrease of DC% in the dual mode promoted by the interposition of a 2.0-mm-thick IPS Empress 2 disc. MATERIAL AND METHODS: In the chemical activation, the resin-based cements were prepared by mixing equal amounts of base and catalyst pastes. In the dual activation, after mixing, the cements were light-activated at 650 mW/cm² for 40 s. In a third group, the cements were light-activated through a 2.0-mm-thick IPS Empress 2 disc. The DC% was evaluated in a FT-IR spectrometer equipped with an attenuated total reflectance crystal (ATR). The data were analyzed by two-way ANOVA and Tukey's HSD test. RESULTS:... Journal of Applied Oral Science journals http://www.medworm.com/rss/comments.php?id=4180071 Fri, 19 Nov 2010 05:03:21 +0100 4180071