Eficacia de resistencia adhesiva microtraccional, utilizando protocolo de grabado total optibond fl y autograbante clearfil se bond

Abstract

Objetivo: Evaluar la resistencia adhesiva dentina-resina de los Sistemas Adhesivos de Grabado Total Optibond Fl y Autograbante Clearfil SE Bond. Materiales y métodos: 30 terceros molares con formación de corona clínica completa y sin malformaciones, se distribuyeron en 2 grupos de 15 dientes cada uno. Fueron desgastados en su cara oclusal con un disco de carburo, hasta la unión del tercio oclusal y tercio medio coronario. Grupo 1, se realizó protocolo de grabado total utilizando optibond Fl. Grupo 2, se aplicó el protocolo Autograbante, Clearfil SE Bond. Se aplicó una resina compuesta Brilliant Ever Glow para simular restauraciones directas, previo a la aplicación del sistema adhesivo, se polimerizó la resina compuesta con una lámpara de fotocurado BLUEPHASE G4 1200mW/cm2, por 10 segundos cada incremento. Las muestras fueron sometidas a cortes axiales para obtener un total de 15 muestras por grupo, posteriormente se realizó el test de microtraccion para evaluar la resistencia adhesiva microtraccional. Resultados: en grupo 1 se observó una media de valores de resistencia adhesiva de 49,42 Mpa, en el grupo 2 la media obtenida fue de 45,42 Mpa, demostrando diferencias estadísticamente significativa entre ambos grupos. Conclusiones: La resistencia adhesiva microtraccional de los sistemas adhesivos Optibond Fl y Clearfil SE Bond fueron elevadas, comparando los resultados entre los 2 grupos no hay diferencia estadísticamente significativa de valores de resistencia adhesiva.

The aim of this study is to assess the adhesive endurance of dentin-resin with the adhesive systems known as Optibond FL and Clearfil SE Bond. Thirty retained asymptomatic third molars with exodontia indication, crowd formation and nonmalformations were distributed in a couple of groups of 15 dental pieces each. Consequently, the dental pieces were worn out at the occlusal level with a carbide disc until the joining of the occlusal and coronary third molars. Group 1, a totaletching protocol was carried out with Optibond Fl. Group 2; a self-etching protocol was applied by utilizing Clearfil SE Bond. A composite resin named Brilliant Ever Glow was applied to stimulate direct restorations. Prior the application of adhesive systems, composite resin was polymerized through a dental curing light named BLUEPHASE G4 1200mW/cm2, by 10 seconds each increase. Subsequently, dental pieces were subjected to axial cuts to obtain a total of 15 samples per group. Those 15 samples were in turned subjected to a microtraction to assess the microtractional adhesive endurance. Results show the following: In one group, an adhesive endurance of average values was observed which represented 49.42 Mpa; whereas in group 2 the obtained average was 45.42 Mpa, thus demonstrating the significant statistical differences between both groups. In all, the microtractional adhesive resistance of the Optibond Fl and Clearfil SE Bond adhesive systems was high; comparing the results between the 2 groups, there is no statistically significant difference in adhesive resistance values.