Resistencia adhesiva y adaptación de cementos selladores de conductos radiculares a base de MTA a la dentina con o sin gutapercha: estudio in vitro
DOI:
https://doi.org/10.15517/jth6x974Palabras clave:
Adaptación; Gutapercha; Selladores a base de MTA; Resistencia adhesiva push-out; Selladores a base de resina.Resumen
Este estudio in vitro investigó la resistencia adhesiva (push-out) y la adaptación de tres selladores endodónticos: AH Plus Jet (a base de resina), MTA Fillapex y EndoSeal Mineral Trioxide Aggregate (MTA), tanto con obturación con gutapercha como sin ella, utilizando 90 dientes unirradiculares rectos asignados aleatoriamente en grupos y subgrupos. La resistencia adhesiva push-out se midió mediante una máquina universal de ensayos Instron, mientras que la adaptación se evaluó mediante microscopía electrónica de barrido. El análisis estadístico se realizó utilizando ANOVA de una vía y la prueba post hoc de Tukey (p<0.05). EndoSeal MTA mostró la resistencia adhesiva (push-out) más alta y estadísticamente significativa (p<0.001) en ambas condiciones, aunque no se observaron diferencias significativas entre MTA Fillapex y AH Plus Jet en ausencia de gutapercha, donde AH Plus Jet presentó una mayor resistencia adhesiva a nivel del conducto radicular que MTA Fillapex (p<0.001). Aunque la adaptación no mostró diferencias significativas entre los selladores en presencia de gutapercha, AH Plus Jet presentó el menor porcentaje de brechas en su ausencia. En conclusión, EndoSeal MTA exhibió la mayor resistencia adhesiva (push-out) en general, lo que convierte a su adhesión superior en una opción prometedora para la obturación de conductos radiculares.
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