Fendas em classe V de resinas Bulk Fill: uma avaliação em microscopia eletrônica de varredura

Detalhes bibliográficos
Ano de defesa: 2019
Autor(a) principal: Righes, Danielle Zorzo
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de Santa Maria
Brasil
Odontologia
UFSM
Programa de Pós-Graduação em Ciências Odontológicas
Centro de Ciências da Saúde
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://repositorio.ufsm.br/handle/1/18547
Resumo: The aim of this in vitro study was to evaluate under scanning electron microscopy (SEM), the gap formation due to the shrinkage stress of a conventional resin (Filtek Z350XT [3M ESPE]) and two types of bulk-fill resins (Filtek Bulk Fill [3M ESPE] and Opus Bulk Fill [FGM]) along the margins of class V restorations. On each of the 36 extracted human non-carious molar teeth, class V cavities were prepared on the medium third of buccal and lingual surfaces, which were divided into six groups (n = 6), according to the restorative technique: incremental and unique insertion technique. After restoration, each molar was cut in half in the buco-lingual direction between the two restorations, resulting in two specimens per molar. The specimens were evaluated in SEM and the data were submitted to one-way ANOVA and Tukey test, at a significance level of 5%. The gaps were measured at three different points from the all walls to the restoration with 250x magnification to determine the mean of each wall. All the composites resins (Filtek Z350 XT, Filtek Bulk Fill and Opus Bulk Fill) tested individually in the unique and incremental insertion techniques did not present statistical difference, however, Filtek Bulk Fill composite when used in the technique recommended (unique insertion) shows better result compared to Z350 XT in the incremental insertion technique. All the groups had a predominance of gingival wall gaps being the most critical region.