Effect of Self-etching Adhesives on the Bond Strength of Glass-Ionomer Cements

Objective: statement of problem: adequate bond strength between glass ionomer cements and composite resin is necessary for the success of the sandwich technique. purpose of study: this study assessed the micro-shear bond strength of composite resin to glass-ionomer cements (gic) using self-etch adhesives with different ph values. materials and methods: one hundred specimens (6×4×2 mm) were made using fuji ii and fuji ii lc gics and treated with different adhesives as follows: group 1:fuji ii+ adper prompt l-pop, group-2: fuji ii+se bond, group-3: fuji ii + adhese, group-4:fuji ii+ protect bond, group-5: fuji ii + single bond, group-6:fuji ii lc+ adper prompt lpop, group-7: fuji ii lc+se bond, group-8:fuji ii lc+ adhese, group-9: fuji ii lc+ protect bond, and group-10: fuji ii lc+ single bond. each group consisted of 10 specimens. a cylinder of z100 composite resin was placed on each sample and light cured. after 24 hours of water storage (37˚c), the specimens were subjected to micro-shear bond strength tests (0.5 mm/min). data were analyzed using two-way anova and tukey’s test. results: the mean micro-shear bond strength of groups 1-10 was 11.66±1.79, 16.50±1.85, 18.47±1.77, 13.95±1.77, 15.27±1.49, 15.14±0.90, 20.03±1.19, 17.48±3.00, 16.24±1.98 and 16.03±1.49 mpa, respectively. there were significant differences between groups 1 and 7 (p<0.05). no significant difference was observed between other groups (p>0.05). fuji ii lc showed higher bond strength than fuji ii (p<0.05). conclusion: type of self-etch adhesive had no significant effect on micro-shear bond strength of glass-ionomer to composite resin. resin modified glass ionomer cement (rmgic) exhibited higher bond strength than the conventional gic.