Background: Secondary or recurrent caries are located around restoration margins or under these lesions, and can lead to tooth loss. The interproximal or bite wing radiograph is the technique of choice to assist diagnosis of secondary caries.Objective: To evaluate diagnostic accuracy of secondary caries in pulpal walls artificially created in extracted human premolars, observed in digital bitewing radiographs using variations in horizontal X-ray beam angle of incidence and application of enhancement filters.
Materials and methods:The sample consisted of 20 healthy premolars, in which secondary caries lesions were simulated by means of subjecting the pulpal wall of the cavity to wear with spherical carbide drill half, fitted to a high speed handpiece, under constant cooling, focused perpendicular to the tooth surface. The orifices were filled with wax and all teeth were restored with composite resin Filtek Z350 XT ® . Later teeth were radiographed with a digital sensor complementary metal-oxidesemiconductor (CMOS) varying the horizontal angle at intervals of 2°, covering a range of -10 to +10º.
Results:The results showed that in the diagnosis of secondary caries, there was no statistically significant difference between the 2 pseudocolor filters, and negative and direct digital
O tratamento da má oclusão de Classe II em duas fases é eficaz em sua correção, entretanto apresenta um tem tempo médio de tratamento maior, sem resultar em benéficos significantes no resultado final. O presente estudo teve como objetivo revisar a literatura a respeito das indicações do tratamento da Classe II em duas fases, apresentando possíveis benefícios adicionais de um tratamento em duas fases, como redução de estresse psicológico e risco a traumas dentários. Grandes reduções de trespasse horizontal em dentadura mista mostraram-se eficazes na melhora da autoestima e qualidade de vida de pacientes vítimas de bullying, assim como na redução da incidência de traumas dentários, tendo como principais beneficiados pacientes mais sensíveis psicologicamente e aqueles com maior risco a traumas dentários.Descritores: Má Oclusão de Angle Classe II; Bullying; Autoimagem; Traumatismos Dentários.
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