Effect of dentin adhesives on the enamel-dentin/composite interfacial microleakage

N Pradelle-Plasse, S Nechad, B Tavernier, P Colon
American Journal of Dentistry 2001, 14 (6): 344-8

PURPOSE: To evaluate the microleakage at the enamel-dentin resin-based composite (RBC) interface of 4 dentin bonding systems (DBS).

MATERIALS AND METHODS: Standardized kidney-shaped Class V cavities were prepared on the buccal and lingual surfaces at the cemento-enamel junction of 90 extracted human teeth and restored with a microhybrid RBC (Filtek P60) following application of either Excite (EXC), a single component adhesive; Prompt L Pop (PLP), a self-etching priming bonding adhesive; Clearfil SE Bond (SEB), a self-etching adhesive; or OptiBond Solo (OPS), a single component adhesive. The teeth were thermocycled, immersed in a dye solution and sectioned. The enamel failures and the occlusal and cervical dentin microleakages were measured.

RESULTS: Significant differences were evident between the self-etching adhesives and the adhesives using phosphoric acid (P 0.05) for the enamel. The occlusal dentin microleakage was similar for the four DBS. PLP presented the worst values at the cervical dentin margin compared to the three other DBS. Significant differences were noted between PLP and EXC and OPS, which performed better.

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