Producción científica2021· Journal of Clinical and Experimental Dentistry
Influence of the adhesive strategy in the sealing ability of resin composite inlays after deep margin elevation
Q3 · DentistryImpact Factor · 1.368
AutoresDayana Da Silva Gonçalves; Laura Ceballos; M. Victoria Fuentes
Por qué importa
Este estudio ha analizado cómo la posición del margen gingival y la estrategia adhesiva empleada afectan la capacidad de sellado de las incrustaciones de composite en el contexto de la elevación profunda del margen (DME). Se evaluó la infiltración de nitrato de plata en dientes unimolares, comparando márgenes en esmalte, dentina o tras DME, utilizando sistemas adhesivos de grabado y enjuague (ERA) frente a autograbado (SEA). Los resultados indican que la posición del margen en esmalte, junto con el grabado ácido, proporciona un sellado excelente independientemente del sistema adhesivo. Sin embargo, al trabajar en dentina, el sistema autograbado demostró una mayor capacidad de sellado que el ERA, especialmente en márgenes elevados. Comprender estas diferencias es crucial para optimizar la longevidad de las restauraciones indirectas y prevenir la microfiltración marginal, un factor clave en la salud del periodonto y el éxito a largo plazo de la rehabilitación.
Background: The aim of this study was to determine the influence of the gingival margin position and the adhesive strategy selected to perform deep margin elevation (DME) in marginal sealing of resin composite inlays by a nanoleakage test. Material and methods: 12 sound third molars were selected and expulsive MOD cavities for inlays were prepared. Experimental groups were established according to gingival margin location (enamel: 1 mm above cemento-enamel junction (CEJ), dentin: 1 mm below CEJ, or DME, and the adhesive strategy used to lute inlays and elevate the gingival margin. Therefore, the six experimental groups were: 1) Enamel + etch-and-rinse adhesive (ERA) Adper Scotchbond 1XT (SB1XT); 2) Dentin + SB1XT; 3) DME + SB1XT; 4) Enamel + self-etching adhesive (SEA) with enamel selective etching Clearfil SE Bond (CSE); 5) Dentin + CSE; 6) DME + CSE. Resin composite inlays were constructed (Gradia Indirect) and all luted with the same resin cement (RelyX ARC). Specimens were submitted to nanoleakage test. Results were analyzed by Kruskal-Wallis and Mann-Whitney U tests with Bonferroni correction (p<0.05). Results: A perfect sealing ability was evidenced for experimental groups with gingival margins on enamel. Similar nanoleakage values were determined when CSE adhesive was applied regardless the gingival margin position. The highest silver nitrate infiltration was detected for elevated margins with the ERA SB1XT. Conclusions: The SEA Clearfil SE Bond showed higher sealing ability than the ERA Adper Scotchbond 1XT when margins were located on dentin, regardless margin elevation. Gingival margins on enamel together with enamel acid etching provided an excellent sealing with both adhesive systems. Key words: Adhesion, composite inlays, gingival margin, deep margin elevation, marginal seal, nanoleakage test.
Gonçalves DDS, Ceballos L, Fuentes MV. Influence of the adhesive strategy in the sealing ability of resin composite inlays after deep margin elevation. Journal of Clinical and Experimental Dentistry. 2021. doi:10.4317/jced.58689
