Influência do desenho de cavidade de acesso endodôntico e da técnica restauradora na remoção de tecido duro e resistência à fratura de pré-molares inferiores

Autores

DOI:

https://doi.org/10.33448/rsd-v11i1.24575

Palavras-chave:

Preparo do canal radicular; Resistência à flexão; Microtomografia de raios-x; Restauração dentária permanente.

Resumo

Este estudo avaliou a influência do acesso tradicional (TradAC) e conservador (ConsAC), com diferentes técnicas restauradoras, na porcentagem de tecido duro removido (% TDR) e na resistência à fratura de pré-molares inferiores. 45 pré-molares foram escaneados por microtomografia computadorizada e divididos em quatro grupos de acordo com o acesso (TradAC ou ConsAC) e a técnica restauradora: resina composta (RC) ou pino de fibra (PF) + RC. Após o preparo, os dentes foram re-escaneados para determinar o aumento de volume e % TDR na coroa e no canal radicular. Após a restauração, a carga na fratura foi registrada. Os dados foram analisados estatisticamente pelos testes one-way ANOVA, post-hoc de Tukey, ANOVA de medidas repetidas e teste de qui-quadrado (P <0,05). O TradAC (RC ou PF) resultou no aumento do volume do canal radicular (Δ%) e de tecido duro removido em até 14 mm (%) em comparação com o ConsAC (RC ou PF). O TradAC + PF removeu maior porcentagem de tecido duro da coroa quando comparado ao TradAC + RC. A porcentagem de tecido duro removido na coroa nos grupos ConsAC foi estatisticamente menor do que nos grupos TradAC. O grupo controle apresentou maior resistência à fratura do que todos os grupos experimentais, sem diferenças entre os últimos. Os padrões de fratura restauráveis foram mais prevalentes. As cavidades de acesso endodôntico tradicionais removeram maior porcentagem de dentina do que as cavidades de acesso endodôntico conservadoras. No entanto, não foram observadas diferenças na resistência à fratura. Restaurações usando resina composta ou pino de fibra associado à resina composta mostraram resultados semelhantes de resistência à fratura.

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04/01/2022

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BOSCATTO, R. H. .; PRADO, M.; SILVA, E. J. N. L. .; LIMA, C. O. de .; DE-JESUS-SOARES, A.; FROZONI, M. Influência do desenho de cavidade de acesso endodôntico e da técnica restauradora na remoção de tecido duro e resistência à fratura de pré-molares inferiores. Research, Society and Development, [S. l.], v. 11, n. 1, p. e18511124575, 2022. DOI: 10.33448/rsd-v11i1.24575. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/24575. Acesso em: 30 jun. 2024.

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