AI Article Synopsis
- The study aimed to evaluate how well seven different adhesive systems prevent microleakage in dental materials applied to enamel and dentin surfaces.
- Class V cavities were created in bovine incisors, filled with a composite material, and then tested for leakage after undergoing thermal cycling and dye immersion.
- Results showed that enamel margins leaked less than dentin margins, with the adhesive system's effectiveness being more notable in dentin, where Excite had the best performance against leakage.
Article Abstract
Aim: The aim of this study was to evaluate the microleakage of seven adhesive systems on two substrates (enamel and dentin).
Methods And Materials: Class V cavities were performed in buccal and lingual surfaces of 56 bovine incisors. The cervical margin was located in dentin and the incisal margin in enamel. The specimens were randomly divided into seven groups (n=16), according to the adhesive system employed: Single Bond; Excite; One Step Plus; Gluma One Bond; Magic Bond; One Up Bond F; and One Coat Bond. The cavities were incrementally filled with a hybrid composite Filtek Z250 and polymerized with a XL 3000 light curing unit. After polishing, the specimens were submitted to thermal cycling followed by dye immersion. Leakage was evaluated under magnification (40X) based on a standard ranking. Data were subjected to statistical analysis (Kruskal-Wallis).
Results: Enamel margins exhibited lower leakage than dentin margins (p<0.01). The majority of the specimens were leakage-free and materials performed similarly. Conversely, in dentin most of the specimens exhibited the highest leakage degree and significant differences among materials (p<0.05) were found, with Excite exhibiting the lowest leakage degree. It was concluded enamel provided better sealing and the adhesive system was a significant factor only in dentin.
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