Microshear Bond Strength of Adhesive Systems on Eroded Primary Enamel and Dentin

摘要

Purpose: Erosive tooth wear often leads to surface loss requiring restoration of primary teeth with adhesive materials. The purpose o f this study was to evaluate the microshear bond strength (mu SBS) of different adhesive systems to sound and eroded primary enamel and dentin surfaces. Methods: Half of the samples underwent erosion (immersion in Coca-Cola for one minute five times over five days) and abrasion cycles (brushing with an electric toothbrush, fluoride toothpaste slurry. for one minute at 250 g load). Samples were divided into adhesive groups (N equals 12): Adper Single Bond 2 (etch-and-rinse); Single Bond Universal (self-etch); Optibond FL (etch-and-rinse with fluoride); and Bond-Force (self-etch with fluoride). Resin composite was bonded on sample surfaces and subjected to mu SBS test. Data were analyzed by two-way analysis of variance, Tukey test, and chi-square test (P = 0.0.5) on mu SBS test. The failure mode evaluation showed significant differences between sound and eroded dentin (P=0.003) but no difference among the adhesives (P=0.177). Conclusions: Microshear bond strength in primary enamel and dentin was not affected by erosion/abrasion or type of adhesive system.