Microleakage of 3 single-bottle self-etch adhesives having different solvents.

: This study compared the microleakage from 3 single-bottle self-etch adhesives (SEAs) with a conventional etch and rinse (ER) system. Class V cavities were prepared on buccal and lingual surfaces at the cementoenamel junction of 40 extracted human third molars. The cavities were allocated into 4 groups (n = 20). The groups were treated with either a combination of composite resin and 1 of 3 SEAs, or with a conventional ER system. Dye penetration of the samples was performed by placing them in a fresh solution of India ink for 48 hours. After rinsing and sectioning, the samples were placed under a light microscope and evaluated for microleakage along occlusal (enamel) and gingival (dentin) margins. The data were analyzed statistically. Microleakage scores of the adhesives exhibited significant differences (P 0.05). The ER system was more successful in sealing enamel than dentin.