Does Different Application Modes of Universal Adhesives with Universal Resin Composites Affect the Microleakage in Class V Cavities? An In Vitro Study

Abstract

Abstract Objective The aim of this in vitro study was to evaluate the levels of microleakage of different modes of the Scotchbond Universal (3M ESPE, St. Paul, MN, USA) and the two novel resin composites. Materials and Methods Sixty-six freshly extracted sound human central incisors of the similar size were randomly assigned to 2 groups (n:33 per group) according to the brand of resin composite. Each group was further divided into 3 subgroups based on the universal adhesive application protocol used: (a) total etch, (b) self-etch and (c) selective etch. Each tooth was immersed in a 0.5% basic fuchsin dye solution at 37C0 for 24 hours. After dye penetration, teeth were sectioned and evaluated with conventional (scoring) and digital methods (Image J). The intra- and inter-examiner agreement was estimated according to the Kappa statistics and the results were analyzed with the one-way ANNOVA and the Kruskal Wallis statistical tests (p < 0.05). Results The microleakage of the gingival and incisal margins are statistically similar, regardless of the composite brand and the method of application of the universal adhesive. Conclusion The microleakage exhibited by current adhesives and resins is independent of the adhesive application mode and measurement method. Clinical relevance: Evaluation of microleakage in Class V cavities using novel universal composites (Omnichroma and 3M Filtek Universal) with Scotchbond Universal adhesive, providing essential insights for clinicians grappling with challenges in adhesive restorations, such as aesthetic outcomes, polymerization stresses, and optimal adhesive protocols.