Formación de capa híbrida al cementar postes metálicos y de fibra de vidrio en dientes tratados endodónticamente / Hybrid layer formation using metal post and fiber post into endodontically trated canal roots

RESUMEN

Se evaluó al microscopio electrónico de barrido (MEB) la efectividad de la adhesión lograda dentro de conductos tratados utilizando dos sistemas adhesivos, uno de fotocurado (Single Bond) y otro dual (Prime& Bond NT + Self-Cure Activator) y dos sistemas de postes (fibra de vidrio y metálicos). El objetivo fue evaluarla formación de capa híbrida y tags de resina al interior de los conductos radiculares. Método: Doce piezas dentarias fueron preparadas para recibir un poste. Se dividieron en dos grupos de 6piezas, a cada uno de los cuales se les colocó un tipo de poste. Ambos grupos fueron subdivididos en dos, aplicándoles distintos adhesivos, la resina de cementación RelyX ARC y el poste correspondiente. Las muestras fueron cortadas longitudinalmente y preparadas para la observación al MEB. Resultados: No se evidenciaron diferencias en cuanto al espesor de la capa híbrida entre los grupos. Se concluye que la capa híbrida y tags de resina formados dentro de los conductos utilizando ambos sistemas de postes y diferentes sistemas adhesivos, no son satisfactorios (AU)

ABSTRACT

The goal of this study was to evaluate the adhesive effectiveness attained in root canals endodontically treated with a scanning electronic microscope (SEM). We used two adhesive systems (Single Bond and Prime&BondNT + Self Cure Activator) and two post systems (fiberglass and metallic). The main objective was to evaluate the hybrid layer and resin tag formation inside each root canal. Twelve teeth were used, which were prepared for receiving the post. The teeth were divided into two groups of 6 pieces each. Each group received one type of post. In turn, each group was subdivided in two (a total of 4), receiving different adhesives, the cementation resin RelyX ARC and the corresponding post. The samples were cut longitudinally and prepared to be scrutinized with the microscope. The results showed that the adhesion inside the canal roots was not reliable. No difference regarding the thickness of the hybrid layer was shown between the groups. We concluded that the quality of the hybrid layer and the resin tags built inside the teeth, utilizing both post and differents adhesive systems, was not satisfactory (AU)