Kerimova, LeylaKoc Vural, UzayKiremitci, Arlin2021-03-102021-03-1020200026-4970http://hdl.handle.net/11727/5555BACKGROUND: The aim of the present study was to compare bulk-filled composite resins with conventional composites in terms of cuspal movement and micro-leakage scores. METHODS: Ninety-six maxillary premolar teeth with mesial-occclusal-distal cavities were allocated to four groups. Twelve teeth in each group was treated etch-and-rinse, self-etch or selective-etch (N.=8) protocols with respective adhesive system. Bucco-palatal cusp measurements were performed before and after preparation, and 180s after curing and then subjected to 5000 thermocyclws. After immersed in 0.2% basic fuchsin dye for 24h, cervical micro-leakage was evaluated. The data was analyzed by One-way ANOVA and post-hoc Tukey's honest Test (P<0.05). RESULTS: All groups and bonding protocols revealed no significant differences in total cuspal deflection measurement and micro-leakage scores. After preparation, a significant increase was found in bucco-palatal width of the teeth compared to baseline (P=0.002). There were no significant relationship among composite resins and adhesives (P>0.05). CONCLUSIONS: Cuspal relief after cavity preparation should be taken into account when evaluating deflection.enginfo:eu-repo/semantics/closedAccessComposite resinsBicuspidAdhesivesarticle6931651730006215410000072-s2.0-85087432954