Avaliação da resistência à fratura de dentes restaurados e tratados endodonticamente com diferentes retentores intrarradiculares

Autores

DOI:

https://doi.org/10.33448/rsd-v12i4.41336

Palavras-chave:

Resistência à fratura; Técnica para retentor intrarradicular; Resina composta.

Resumo

O objetivo deste estudo foi avaliar a resistência à fratura de pré-molares fragilizados após restauração com diferentes retentores intrarradiculares. Para o teste de resistência à fratura, 30 pré-molares superiores foram divididos em três grupos experimentais (n=10), sendo o G1 composto de dentes hígidos (grupo controle); o grupo G2 - dentes com pino de fibra de vidro (Reforpost, Angelus) e restauração direta com resina microhíbrida Filtek Z250 (3M ESPE) e o G3 - dentes com fibra de polietileno (Ribbond Inc.) e restauração direta com resina composta microhíbrida Filtek Z250 (3M ESPE). As amostras foram submetidas ao teste de resistência à fratura e as falhas foram avaliadas. Os resultados foram analisados pelos testes Anova e Teste T para a resistência à fratura, e o Teste Kruskal-Wallis para a localização e tipo de fratura, sendo sempre utilizado p<0,05, como nível de confiança. O grupo G1 apresentou os maiores valores, com 503,12N (+/- 262,20) com diferença estatística dos grupos G2 e G3 que apresentaram valores semelhantes (p<0,05) para resistência à fratura, quanto a localização de fratura a mais comum entre os três grupos foi na cervical. Pode-se concluir que as restaurações com o uso do pino de fibra e fibra de polietileno utilizados como retentores intrarradiculares propiciaram resultados semelhantes nos testes de resistência à fratura, demostrando que a fibra de polietileno utilizada como retentor pode ser considerada como uma opção para reabilitação de dentes tratados endodonticamente.

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21/04/2023

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BRAGA, M. R. C. L. .; SENA, N. .; PAULO JUNIOR, M. .; OLIVEIRA, T. T. .; MACEDO NETO, J. C. de .; CALDERON, P.; OLIVEIRA, J. A. de . Avaliação da resistência à fratura de dentes restaurados e tratados endodonticamente com diferentes retentores intrarradiculares. Research, Society and Development, [S. l.], v. 12, n. 4, p. e0112441336, 2023. DOI: 10.33448/rsd-v12i4.41336. Disponível em: https://www.rsdjournal.org/index.php/rsd/article/view/41336. Acesso em: 19 maio. 2024.

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