Resistencia a la fadiga de dos instrumentos Bassi LogicTM e Hyflex EDM en canales artificiales de curvatura extrema

Autores/as

DOI:

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

Palabras clave:

Endodoncia; Instrumentos dentales; Rotación.

Resumen

El objetivo de este trabajo fue evaluar comparativamente la resistencia a la fatiga por flexión de instrumentos de NiTi a través de un modelo in vitro (canal artificial). En este trabajo se incluyeron diez instrumentos Hyflex EDM (Coltene/Whaledent, Altstätten, Suiza), punta 10, conicidad .05 y 10 instrumentos Bassi LogicTM (Bassi Endo, Belo Horizonte, Brasil), punta 15, conicidad .05. Para el ensayo de resistencia a la fatiga por flexión estática se utilizó un canal artificial de acero inoxidable con un radio de curvatura de 5 mm, un ángulo de curvatura de 90º y un diámetro interno de 1,5 mm. Los instrumentos se rotaron en los canales artificiales hasta que se produjo la fractura, se registró el tiempo hasta la fractura y se calculó el número de ciclos hasta la fractura. Se midieron las longitudes de los fragmentos rotos y se evaluaron 3 muestras de cada grupo en microscopía electrónica de barrido para caracterizar la fatiga metálica. Los datos fueron evaluados por la prueba no paramétrica de Mann-Whitney (para muestras sin distribución normal). El nivel de significación establecido fue p<0,05. Los instrumentos Bassi LogicTM 15.05 mostraron una mayor resistencia a la fatiga en canales artificiales con curvatura acentuada, en comparación con los instrumentos Hyflex EDM 10.05.

Citas

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Publicado

04/05/2022

Cómo citar

RESENDE, L. C. .; MAIA , C. A.; SANTOS, A. M. C.; CAMPOS , G. O. .; SOARES JUNIOR , P. R. R.; FERNANDES , A. M. . Resistencia a la fadiga de dos instrumentos Bassi LogicTM e Hyflex EDM en canales artificiales 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.

Número

Sección

Ciencias de la salud