Introduction Modern dentistry is reflected in the insertion of new materials with different adhesion forms in dental structures, such as the Universal adhesive system. Objective To evaluate the bond strength of the universal dentin adhesive system, in the form of self-etching and conventional application, compared with a simplified conventional adhesive system, in two distinct periods: 1 week and 6 months. Material and method 48 bovine incisors separated into 6 groups, stored for 7 days, were selected. Worn out the buccal enamel until dentin exposure. Adper Single Bond 2 (3M Espe) or SingleBond Universal (3M Espe) adhesives were applied, and catheters filled with Opallis Flow (FGM) composite were placed. After photoactivation, the catheters were removed and the specimens (n = 48), stored in distilled water at 37 °C for one week and six months, were exposed. The specimens were fixed to a universal testing machine (EMIC DL 2000) with a speed of 0.5 mm / min. Bond strength (BS) was calculated in MPa, and data were statistically analyzed by Anova and Tukey test at 5% significance level. Result For Adper Single bond, the BS was equivalent in the times tested; for Universal conventional and self-conditioning time influenced the BS, with a decrease in the results. At 1 week, all stickers were different from each other, with higher BS for Universal conventional mode, followed by universal self-etching mode and then Adper Single bond. Conclusion The best results were achieved with universal adhesive in conventional mode for both tested times.
Dentre todas as patologias que afetam o sistema estomatognático, a disfunção temporomandibular (DTM) é bastante prevalente na população brasileira. As causas de DTM são várias, dentre elas as doenças psicossomáticas, que podem iniciar ou mesmo intensificar um quadro de disfunção já instaurado, inclusive pelos efeitos colaterais decorrentes do tratamento dessas alterações psicológicas. Este trabalho objetivou, através de um estudo clínico, avaliar a prevalência de doenças psicossomáticas, seus efeitos colaterais do tratamento e revisar a literatura sua relação com a DTM. Estudo observacional, Cross-sectional (transversal/prevalência) realizado nas Clínicas de Odontologia da Universidade Paranaense – UNIPAR campus Cascavel, no período de março de 2015 a agosto de 2016. Os voluntários preencheram um questionário referente à sua condição sistêmica, hábitos nocivos e higiênicos, os dados foram submetidos à estatística descritiva em planilhas do software Excel for Windows. Os resultados mostraram que 42,7% possuíam alguma alteração sistêmica, dentre estes, 6,30% eram portadores de doenças psicossomáticas, a depressão foi a mais prevalente (96%) seguido de ansiedade (4%), ao passo que 45% relataram possuir xerostomia. Portanto, o número de portadores de doenças psicossomáticas é consideravelmente alto, bem como efeitos colaterais referentes ao tratamento, sendo necessário uma análise criteriosa do paciente, pois podem acarretar danos à saúde bucal e também à Articulação Temporomandibular.
Introduction Endodontically treated teeth are usually affected by extensive structure loss requiring the use of intraradicular posts to provide retention and restoration. Objective An in vitro assessment was performed on the bonding of glass fiber posts to the root dentin. Material and method Ninety (n = 10) single bovine roots were used in a 3 x 3 x 3 factorial study with subdivided plots: post customization varying the presence and type of resin (without customization, conventional resin, and Bulk Fill resin), light-curing device (Valo, Radii-Cal, Rainbow), and root third (cervical, middle, and apical). Result For the customization factor, Tukey’s test (5%) showed the superiority of the Bulk Fill (8.16 MPa) and Z350 (7.40 MPa) groups compared to the control group (4.92 MPa), without differing from each other. All light-curing devices differed, showing the superiority of Valo (9.36 MPa), Radii (6.96 MPa) as an intermediate, and the inferiority of Rainbow (4.17 MPa). The cervical root third (7.81 MPa) was superior, the apical third was inferior (5.80 MPa), and the middle third (6.88 MPa) was an intermediate without differing from the others. Conclusion The customization of glass fiber posts increases the bond strength to the root dentin, regardless of the resin used. There was a compromise in the apical third and when using light-curing devices with lower light intensity.
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