Capacidade de selamento de três materiais retrobturadores frente à infiltração microbiana por Enterococcus faecalis

• Autor(a) principal: Reis, Luciana Carvalho
• Data de Publicação: 2010
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/14115
• topic: Restoring materials of the root canal; Dental leakage; Enterococcus faecalis; Materiais restauradores do canal radicular; Infiltração dentária; Enterococcus faecalis; CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA::ENDODONTIA

The objective of this study was to compare the apical sealing ability of three root-end filling materials in teeth submitted to the microbial leakage by Enterococcus faecalis. Besides analyzing the occurrence of the microbial leakage in relation to the variable time.For such, 80 canine permanent superior teeth extracted from humans were used, which were instrumented with ProTaper Universal® system (MAILLEFER) and filled by the lateral compaction technique, with two types of endodontic sealers: Endofill® (DENTSPLY) and AH Plus® (DENTSPLY). The apices were resected with the removal of 3mm of the apical third and the root-end cavities prepared with ultrasonic tips. The samples were subdivided, randomly, in 6 groups with 10 teeth each, and 2 control groups. The materials used for the retrofilling were white MTA® (ANGELUS), IBC BioAggregate® (INNOVATIVE BIOCERAMIX INC.) and Acroseal® (SEPTODONT). Devices were made for fixation of the teeth to the Eppendorf tubes. The filling samples were inoculated with strains of E. faecalis and incubated at 37°C, for a period of 90 days, for analysis of the presence of turbidity of Enterococcosel medium. For the accomplishment of the statistical analysis the following tests were used: Qui-square with Exact Proof of Fisher and Kruskal-Wallis. The results showed that all the groups in which the filling was accomplished and the subsequent retrofilling presented leakage. Comparing all groups, there was not significant difference among the tested materials. In regard to only the root-end filling materials, Acroseal obtained the smallest leakage, followed by white MTA® and IBC BioAggregate®. The samples filled with the sealer Endofill® didn't present statistical difference in relation to the variable time. However, in the samples filled with the sealer AH Plus®, there was larger leakage occurrence in the samples retrofilled with IBC BioAggregate® and smaller leakage in the samples retrofilled with Acroseal®, with statistically significant difference at a 10% level.