Evaluation of optical properties of single-color composite resins used in repair of different prosthetic materials

Objective: The aim of this study was to evaluate the color and translucency harmony of single-shade universal composite resins used for repairing of esthetic prosthetic materials after aging. Method: 3D permanent crown resin and six different CAD/CAM restorative materials (hybrid ceramic, nanolithium disilicate, leucite reinforced glass ceramic, advanced lithium disilicate, zirconia reinforced silicate, nanohybrid ceramic) were repaired with two single-shade composite resin (Ormocer and supra nano spherical) and two different nanohybrid composite resins (Positive control) (N = 350, n = 10). The group without repairment was recorded as the negative control group. Specimens were aged by thermal cycling (5-55 °C, 5000 cycles). Color and translucency changes were calculated with CIEDE 2000 formulas. Two-way analysis of variance was used to evaluate the ΔTP and ΔE00 values according to composite and ceramic groups. Pearson correlation coefficient was used for the interaction of ΔTP and ΔE00. One-way analysis of va