Akademik Veri Yönetim Sistemi
BMC ORAL HEALTH, cilt.25, sa.1, 2025 (SCI-Expanded, Scopus)
Background This study aimed to evaluate the effects of masking and bleach-shade composite resins, applied using the incremental layering technique, on the final color and translucency of restorations. Methods In this study, 27 composite resin discs belonging to the test group were prepared by placing 1.5 mm A2 color composite resin (Neo Spectra ST HV, Dentsply Sirona) on 0.5 mm thick composite discs made with one masking (Omnichroma Blocker, Tokuyama-group OB) and two bleach-shade composite resins (ELS flow syringe SW + + , Saremco-group SW; Neo Spectra ST LV BW, Dentsply Sirona-group BW) and 9 composite resin discs belonging to the control group using 2 mm A2 color composite resin (Neo Spectra ST HV, Dentsply Sirona, group CT). After the specimens were kept in a 100% humid environment at 37 degrees C for 24 h, the color of the specimens was measured on three different backgrounds (white, black, gray) with a spectrophotometer (Vita Easyshade). The data were analyzed by two-way ANOVA followed by Tukey's post hoc test (p <= 0.05). Results The SW group showed the smallest color change on the black and gray backgrounds (p < 0.001). The CT group showed the highest translucency value whereas the SW group showed the lowest translucency value (p < 0.001). The SW group demonstrated more successful outcomes than the others in providing masking in black and gray. Conclusions Incremental application of masking and bleach-shade composites significantly reduced translucency and enhanced masking ability. The SW group showed the most favorable outcomes, particularly against black and gray backgrounds. However, most specimens did not achieve clinically acceptable thresholds. Clinicians should consider both translucency and masking properties when selecting composites for esthetic restorations over discolored substrates.