EFFECT OF İN-OFFİCE BLEACHİNG ON THE SURFACE ROUGHNESS OF DİFFERENT COMPOSİTE RESİNS

Objective: The aim of this study is to investigate the effect a high concentration hydrogen peroxide bleaching agent on surface roughness four different composite resins. Material and Methods: For purpose, with help teflon molds, total 24 samples (10 x 2 mm) were prepared, n = 6 for each group. placed in molds two layers 2mm covered by transparent mylar strips at top bottom surfaces. material was compressed finger pressure between 1mm thick glass plates. tip light device applied directly from tape polymerization samples. Polymerization carried out using LED layer. After polished finishing discs, they kept 37 ° C hours distilled water. Surface values (Ra) all measured profilometer device. first measurements, whitening containing 35% surfaces, measurements repeated after process. Data analyzed statistically analysis variance (ANOVA) Tukey tests. Results: Profilometric evaluations showed small increase agent. When initial treated groups compared, difference found insignificant. (P> 0.05) Conclusion: office did not make any nanohybrid microhybrid