Microleakage analysis of dental caries lesions sealed with flow resin and compared to microhybrid resin restorations in dentin

ABSTRACT Objective: To evaluate the sealing of cavities of dentinal occlusal caries lesions, reproduced in vitro, with flow resin compared to cavity restorations presenting healthy dentin using microhybrid composite resin. Methods: The sample consisted of 27 healthy deciduous molars where cavities o...

Full description

Saved in:
Bibliographic Details
Published in:RGO - Revista Gaúcha de Odontologia Vol. 66; no. 2; pp. 141 - 146
Main Authors: VASCONCELOS, Amanda de Albuquerque, REIS, Juliana Tietbohl de Almeida, MOURA, Bianca Fiorentin, GIRÃO, Daniela Cavalcante, IMPARATO, José Carlos Pettorossi, PINHEIRO, Sérgio Luiz
Format: Journal Article
Language:English
Published: Faculdade São Leopoldo Mandic 01-06-2018
Subjects:
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:ABSTRACT Objective: To evaluate the sealing of cavities of dentinal occlusal caries lesions, reproduced in vitro, with flow resin compared to cavity restorations presenting healthy dentin using microhybrid composite resin. Methods: The sample consisted of 27 healthy deciduous molars where cavities of approximately 2 mm in the fossa region were performed and occlusal cleft of each tooth were sealed, impermeabilization was performed and the sample was randomly divided into 2 groups: group I underwent cariogenic challenge and occlusal sealing with resin flow. The teeth of group II were restored with microhybrid composite resin. The teeth were immersed in 5% methylene blue for 8 hours at 37° C and washed until all the dye was removed from the surface. The teeth were sectioned in the mesio-distal direction. The penetration of the dye was evaluated: 0- no penetration; 1- dye penetration up to 1/3 of the restoration; 2- dye penetration up to 2/3 of the restoration depth; 3 - penetration of dye into the pulp wall. The results were analyzed by the Biostat 4.0 program. Descriptive analysis and the mode among the examiners submitted to the Mann-Whitney test. Results: There was no significant difference in microleakage between restoration performed in healthy dentin with microhybrid composite resin or maintenance of infected dentin in primary teeth sealed with resin flow (p = 0.6035). Conclusion: It was concluded that the marginal infiltration of primary molars sealed with microhybrid composite resin and resin flow was not influenced by the removal -or not -of the carious tissue or the material used. RESUMO Objetivo: Avaliar o selamento de cavidades de lesões de cárie oclusais em dentina, reproduzidas in vitro, com resina flow comparando com restaurações em cavidades com dentina hígida utilizando resina composta microhíbrida. Métodos: Foram selecionados 27 molares decíduos hígidos, realizadas cavidades de aproximadamente 2 mm na região de fossa e fissura da face oclusal de cada dente, impermeabilização e divisão em 2 grupos aleatoriamente: grupo I foram submetidos ao desafio cariogênico e selamento oclusal com resina flow. Os dentes do grupo II foram restaurados com resina composta microhíbrida. Os dentes foram imersos em azul de metileno a 5% durante 8 horas a 37 ° C e lavados até que todo o corante fosse removido da superfície. Os dentes foram seccionados no sentido mesio-distal. A penetração do corante foi avaliada: 0- nenhuma penetração; 1- a penetração de corante até 1/3 da restauração; 2- a penetração de corante até 2/3 da restauração profundidade; 3- penetração de corante para a parede pulpar. Os resultados foram analisados pelo programa Biostat 4.0. Foi feita análise descritiva e a moda entre os examinadores submetidas ao teste de Mann-Whitney. Resultados: Não houve diferença significante na microinfiltração entre restauração realizada em dentina hígida com resina composta microhíbrida ou a manutenção da dentina infectada em dentes decíduos selados com resina flow (p=0.6035). Conclusão: A remoção ou não do tecido cariado, assim como o material utilizado, não influenciou na infiltração marginal de molares decíduos selados com resina composta microhíbrida e resina flow.
ISSN:0103-6971
1981-8637
DOI:10.1590/1981-863720180002000063343