Resistência à fadiga dos instrumentos Bassi LogicTM e Hyflex EDM em canal artificial de curvatura extrema

Autores

DOI:

https://doi.org/10.33448/rsd-v11i6.29570

Palavras-chave:

Endodontia; Instrumentos odontológicos; Rotação.

Resumo

O objetivo do trabalho foi avaliar comparativamente a resistência à fadiga por flexão de instrumentos de NiTi através de modelo in vitro (canal artificial). Dez instrumentos Hyflex EDM (Coltene/Whaledent, Altstätten, Suíça), ponta 10 taper .05 e 10 instrumentos Bassi LogicTM (Bassi Endo, Belo Horizonte, Brasil), ponta 15, taper .05 foram incluídos nesse trabalho. Para o teste estático de resistência à fadiga por flexão, utilizou-se um canal artificial de aço inoxidável com um raio de curvatura de 5 mm, um ângulo de curvatura de 90º e um diâmetro interno de 1,5 mm. Os instrumentos foram girados nos canais artificiais até a ocorrência da fratura, tempo de fratura foi registrado e foi calculado o número de ciclos até a fratura. Foram medidos os comprimentos dos fragmentos rompidos e 3 amostras de cada grupo foram avaliadas em microscopia eletrônica de varredura para caracterização da fadiga metálica. Os dados foram avaliados pelo teste Não Paramétrico de MannWhitney (para amostras sem distribuição normal). O nível de significância estabelecido foi p<0,05. Os instrumentos os Bassi LogicTM 15.05 apresentaram uma maior resistência à fadiga em canais artificiais com curvatura acentuada, quando comparados com instrumentos Hyflex EDM 10.05.

Referências

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Publicado

04/05/2022

Como Citar

RESENDE, L. C. .; MAIA , C. A.; SANTOS, A. M. C.; CAMPOS , G. O. .; SOARES JUNIOR , P. R. R.; FERNANDES , A. M. . Resistência à fadiga dos instrumentos Bassi LogicTM e Hyflex EDM em canal artificial de curvatura extrema. Research, Society and Development, [S. l.], v. 11, n. 6, p. e47511629570, 2022. DOI: 10.33448/rsd-v11i6.29570. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/29570. Acesso em: 30 jun. 2024.

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Ciências da Saúde