Revista de Odontologia da UNESP
https://revodontolunesp.com.br/article/588018f07f8c9d0a098b4ecd
Revista de Odontologia da UNESP
Original Article

Comparison of root canal filling removal of different types of endodontic sealers

Comparação da desobturação de dentes obturados com diferentes tipos de cimentos endodônticos

Almeida, Juliana Silva; Nabeshima, Cleber Keiti; Cavatoni, Mariana; Britto, Maria Leticia Borges

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Abstract

The aim of this study was evaluate the difference of root canal filling removal of 4 endodontic sealers (Acroseal, AH Plus, Endomethasone e Endo Rez). It were used 20 upper molars shaped by Gates Glidden 1, 2 and 3, and ProTaper rotary system, then filled by lateral condensation technique using different sealers: Acroseal, AH Plus, Endomethasone e Endo Rez. After 7 days of incubation at 37°, the root canal filling removal was performed using K-file and Hedströen associated to Gates Glidden. The time to reach the working length was recorded using a stopwatch. The data were submitted to ANOVA and Tukey tests, and the comparison between root canals type was done by Krukal-Wallis test. The results showed significant difference just between AH Plus and Endo REZ sealers (p = 0.0167), the root canal type had not influence on the root canal filling removal. It can conclude that epoxy resin-based sealer demonstrate difficulty in removing root canal filling material, and  methacrylate resin-based, zinc oxide eugenol, and calcium hydroxide sealers show similarity.

Keywords

Retreatment, endodontics, cement resin cements, zinc oxide-eugenol

Resumo

O objetivo deste estudo foi avaliar a diferença da desobturação de quatro tipos de cimento (Acroseal, AH Plus, Endomethasone e Endo Rez). Foram utilizados 20 molares superiores, nos quais os terços cervical e médio foram preparados com brocas Gates Glidden 1, 2 e 3, os canais instrumentados com sistema ProTaper e obturados por condensação lateral, utilizando-se diferentes cimentos: Acroseal, AH Plus, Endomethasone e Endo Rez. Após sete dias mantidos em estufa a 37 °C, os dentes foram desobturados com limas K e Hedströen, associadas a Gates Glidden. O tempo até chegar ao limite de trabalho foi marcado com um cronômetro digital. Os dados foram submetidos aos testes de ANOVA e Tukey, e a comparação entre os tipos de raízes foi obtida pelo teste de Krukal-Wallis. Os resultados mostraram diferença significante somente entre o AH Plus e o Endo REZ (p = 0,0167), sendo que o tipo de raiz não influenciou nos resultados obtidos em nenhum dos grupos. Pode-se concluir que o cimento obturador à base de resina epóxia dificulta a desobturação do canal radicular e os cimentos à base de resina uretano dimetacrilato, óxido de zinco e eugenol, e hidróxido de cálcio apresentam similaridade. 

Palavras-chave

Retratamento, Endodontia, cimentos de resina, cimento de óxido de zinco e eugenol.

References



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