Tiempo de curado en la resistencia adhesiva dentinaria al utilizar dos unidades de fotocurado

Abstract

Objetivo: Este estudio buscó evaluar las unidades de polimerización LED polywave (PW) y monowave (MW) sobre la fuerza de unión a la microtracción (µTBS) de las resinas bulk-fill, utilizando tiempos de curado diferentes. Material y método: Se realizó un estudio experimental in vitro, transversal, propectivo, para lo cual se utilizaron terceros molares y se restauraron con las resinas Filtek One Bulk Fill Restorative A2, Tetric® N-Ceram Bulk Fill IVA y Opus Bulk Fill APS A2, cada una fue colocada con su respectivo sistema adhesivo y fueron fotopolimerizados con Elipar Deep cure L (3M ESPE, Saint Paul, EE. UU.) y Valo (Ultradent Products, South Jordan, EE. UU.) en sus tres modos, standard mode, high power mode y extra power mode. Se cortó los dientes obteniendo 15 microbarras por grupo y se midieron con pruebas de microtracción. Los datos se analizaron en el programa SPSS (Statistical Package for the Social Sciences Inc. IBM, NY, USA) versión 24.0. Se realizó análisis descriptivo e inferencial considerando un valor de significancia del 5% (p<0,05) Resultados: Filtek One Bulk Fill, Tetric N-Ceram Bulk y Opus Bulk Fill tuvieron mayor resistencia adhesiva al ser fotocuradas con una lampara monowave, a comparación de la lampara polywave en tres diferentes tiempos y modos de curado. Conclusión: Existen diferencias significativas al comparar la resistencia adhesiva dentinaria al utilizar dos unidades de fotocurado

Objective: This study sought to evaluate polywave (PW) and monowave (MW) LED curing units on the microtensile bond strength (µTBS) of bulk-fill resins, using different curing times. Material and method: An in vitro, cross-sectional, prospective experimental study was carried out, for which Third molars were used and restored, the resins Filtek One Bulk Fill Restorative A2, Tetric® N-Ceram Bulk Fill IVA and Opus Bulk Fill APS A2 were used, each one was placed with its respective adhesive system and they were light-cured with Elipar Deep cure L (3M ESPE, Saint Paul, USA) and Valo (Ultradent Products, South Jordan, USA) in its three modes, standard mode, high power mode and extra power mode. It was cut from the teeth obtaining 15 microbars per group. Microtensile tests were performed. Data were analyzed using the SPSS program (Statistical Package for the Social Sciences Inc. IBM, NY, USA) version 24.0. Descriptive and inferential analysis was performed considering a significance value of 5% (p<0.05), with a type I error. Results: Filtek One Bulk Fill, Tetric N-Ceram Bulk and Opus Bulk Fill had higher bond strength when light-cured with a monowave lamp compared to the polywave lamp at three different cure times and modes. Conclusion: There are significant differences when comparing dentin adhesive strength when using two light-curing units.