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Effectiveness of a silicon-based root canal sealer for filling of simulated lateral canals
Barbizam, João Vicente Baroni; Souza, Matheus; Cecchin, Doglas; Dabbel, Jakob.
  • Barbizam, João Vicente Baroni; University of Passo Fundo. Department of Endodontics. Passo Fundo. BR
  • Souza, Matheus; University of Passo Fundo. Department of Endodontics. Passo Fundo. BR
  • Cecchin, Doglas; University of Passo Fundo. Department of Endodontics. Passo Fundo. BR
  • Dabbel, Jakob; University of North Carolina. Department of Endodontics. Chapel Hill. US
Braz. dent. j ; 18(1): 20-23, 2007. tab, ilus
Article in English | LILACS | ID: lil-461431
ABSTRACT
The purpose of this in vitro study was to evaluate the ability of a silicon-based root canal sealer, compared to zinc oxide and eugenol and an epoxy resin-based sealers, for filling of simulated lateral canals. Thirty extracted single-rooted human teeth were selected, conventional access was made and the working length was established 1 mm from the apical foramen. Three simulated lateral canals, one in each root third (coronal, middle and apical) were prepared in both the mesial and distal surfaces of each tooth using a size 15 reamer adapted to a low-speed handpiece. Each root canal was instrumented using ProTaper rotary files up to file F3 at the working length, and then irrigated with 2.5 percent NaOCl followed by EDTA. The teeth were assigned to 3 groups (n=10), according to the root canal sealer Roeko Seal (Group 1), Sealer 26 (group 2) and Grossman's sealer (Group 3). Gutta-percha cold lateral condensation technique was performed in all groups. Postoperative radiographs were taken and the images were projected for evaluation of the quality of lateral canal filling. Data were submitted to statistical analysis by Kruskal Wallis test at 5 percent significance level. The results showed that Grossman's sealer filled a larger number of lateral canals than Roeko Seal (p<0.05) and Sealer 26 (p<0.01). It may be concluded that Roeko Seal silicone-based root canal sealer was not as effective as the Grossman's sealer for filling of simulated lateral canals. The lateral canals localized in the apical third of the root were more difficult to be filled.
RESUMO
O objetivo desse estudo in vitro foi avaliar a capacidade de um cimento a base de silicone, em obturar canais laterais simulados, em comparação a um cimento à base de oxido de zinco e eugenol e um cimento resinoso. Trinta dentes humanos unirradiculares extraídos foram selecionados, a abertura coronária foi feita e o comprimento de trabalho foi determinado 1 mm aquém do forame apical. Foram confeccionados três canais laterais, um em cada terço radicular, em ambas as faces mesial e distal da raiz, usando um alargador 15 acoplado a um contra-ângulo em baixa rotação. Os canais foram instrumentados com sistema Protaper até a lima F3, sob irrigação com hipoclorito de sódio a 2,5 por cento, seguido de EDTA. Os dentes foram divididos em 3 grupos (n=10) e obturados com o cimento de Grossman, RoekoSeal ou Sealer 26, pela técnica da condensação lateral da gutta-percha. Foram feitas tomadas radiografias pós-operatórias, projetadas em aumentos de 20X para avaliação da qualidade das obturações. Os dados foram analisados estaticamente pelo teste de Kruskal Wallis com nível de significância de 5 por cento. Os resultados mostraram que o cimento de Grossman obturou um numero maior de canais laterais que o cimento RoekoSeal (p<0,05) e o Sealer 26 (p<0,01). Pode-se concluir que o cimento Roeko Seal não foi tão eficiente quanto o cimento de Grossman para o selamento de canais laterais, bem como, que os canais laterais situados no terço apical da raiz apresentaram maior dificuldade para serem obturados.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Root Canal Filling Materials / Silicon / Dental Cements Type of study: Controlled clinical trial / Evaluation studies Limits: Humans Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2007 Type: Article / Project document Affiliation country: Brazil / United States Institution/Affiliation country: University of North Carolina/US / University of Passo Fundo/BR

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Full text: Available Index: LILACS (Americas) Main subject: Root Canal Filling Materials / Silicon / Dental Cements Type of study: Controlled clinical trial / Evaluation studies Limits: Humans Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2007 Type: Article / Project document Affiliation country: Brazil / United States Institution/Affiliation country: University of North Carolina/US / University of Passo Fundo/BR