Protocolos de limpieza para cementos endodónticos biocerámico y a base de resina epóxica: adhesión y eliminación de residuos
DOI:
https://doi.org/10.15517/caks2s94Palabras clave:
Dentina intraradicular; Cemento biocerámico; Cemento de resina epóxica; Resistencia de adhesión; Protocolos de limpieza.Resumen
Este estudio evaluó el efecto de diferentes protocolos de limpieza quimico-mecánica sobre la presencia residual de cementos endodónticos a base de resina epóxica y biocerámico, así como la resistencia de unión de un sistema adhesivo universal para cementar postes de fibra a la dentina intraradicular. Se utilizaron 160 incisivos bovinos que fueron preparados con el sistema ProTaper y obturados con un cemento a base de resina epóxica (Vioseal) o un cemento biocerámico (BioRoot RCS). Se probaron cuatro protocolos de limpieza: etanol (ET), acetato de amilo (AA), acetona (AC) y una solución experimental (EX) que combina acetato de amilo, etanol y acetona. El cemento residual fue analizado mediante microscopía electrónica de barrido, y la resistencia de unión se evaluó a través de pruebas de push-out. Los tipo de falla adhesiva se examinaron bajo un estereomicroscopio, y los datos se analizaron utilizando los tests ANOVA y Kruskal-Wallis (α=5%). Para los cementos a base de resina epóxica, AA y AC resultaron en una mayor apertura de los túbulos dentinarios que ET y EX (p<0.05), siendo AC el que dejó menos residuo. Por el contrario, ET y EX mostraron mayor presencia residual. Para los cementos biocerámicos, ET y EX lograron la mayor apertura de los túbulos (p<0.05). La resistencia de unión fue mayor con ET en el tercio apical (sellador epóxico) y en el tercio cervical (sellador biocerámico) (p<0.05). El etanol y la solución experimental eliminaron eficazmente los residuos del cemento biocerámico mientras preservaban la resistencia de unión. Aunque los selladores a base de resina epóxica dejaron más residuo, todos los protocolos probados proporcionaron una adhesión satisfactoria.
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Derechos de autor 2025 Jaime Barcena-Taco, Ivana D. Mamani-Colque, Eliam C. Zúñiga-Mayhua, Wilfredo G. Escalante-Otárola, Milton C. Kuga, Gabriela M. Castro-Núñez.
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