Avaliação de métodos intermediários de irrigação para evitar a formação de smear-layer química

Detalhes bibliográficos
Ano de defesa: 2016
Autor(a) principal: Silva, Camilla Corrêa
Orientador(a): Silva, Emmanuel João Leal Nogueira da
Banca de defesa: Morante, Daniel Rodrigo Herrera, Moreira, Edson Jorge Lima, Senna, Plínio Mendes
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade do Grande Rio
Programa de Pós-Graduação: Programa de Pós-Graduação em Odontologia
Departamento: Unigranrio::Odontologia
País: Brasil
Palavras-chave em Português:
Área do conhecimento CNPq:
Link de acesso: http://localhost:8080/tede/handle/tede/119
Resumo: The aim of the present study was to evaluate the influence of three different intermediate irrigation protocols on the formation of chemical smear layer (CSL). Thirty freshly extracted human teeth were instrumented using R40 reciprocating files and irrigated with 5.25% NaOCl. Then, teeth were randomly divided into three groups (n=10), according to the intermediate irrigation protocol: Conventional irrigation with saline solution; Self-Adjusting File with saline solution; or EndoVac irrigation with saline solution. Then, the root canals were irrigated with 17% EDTA and received a final flush of 2% Chlorhexidine. After chemomechanical preparation, all specimens were sectioned and processed for observation of the CSL formation by using scanning electron microscopy (SEM). Two calibrated evaluators attributed scores to each specimen. The differences between activation protocols were analyzed with Kruskal-Wallis and Mann-Whitney U tests. Friedman and Wilcoxon signed rank tests were used for comparison between each root canal third. The results demonstrated that the use of Self-Adjusting File results in lower CSL formation when compared to Conventional and EndoVac irrigation (P<0.05). In the Conventional and EndoVac irrigation groups, cervical and medium thirds presented lower CSL formation when compared to the apical third (P<0.05). In the Self-Adjusting File groups no statistically significant differences were observed among the different root canal thirds (P>0.05). It can be concluded that the use of an intermediate irrigation with Self-Adjusting File avoids the formation of chemical smear layer.