Tehran University of Medical Sciences

Science Communicator Platform

Stay connected! Follow us on X network (Twitter):
Share this content! On (X network) By
Evaluating the Final Color of Restorations With Three Cad/Cam Core Materials (Co-Cr, Zirconia, and Peek), Veneered by Two Methods (Indirect Cad/Cam Composite and Heat-Pressed Ceramics) Publisher



Chitsaz F1 ; Kaboudani S1 ; Khoshkhounejad N2 ; Zeighami S2
Authors
Show Affiliations
Authors Affiliations
  1. 1. Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Prosthodontics, Dental Research Center, Dentistry Research Institute, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran

Source: International Journal of Dentistry Published:2023


Abstract

Background. This study aimed to evaluate the final color of restorations with three different core materials (Co-Cr, Zirconia, and PEEK) veneered with heat-pressed ceramic or CAD/CAM composite. Methods. Forty cores in the form of square with dimensions of 10 × 10 mm and thickness of 0.5 mm were milled from Zirconia and Co-Cr blocks and were veneered with either A2 shade CAD/CAM composite resin or heat-press ceramic (n = 10). Ten samples from polyetheretherketone blocks were only veneered with composite resins. A2 shade veneer material with 2 mm served as control for color evaluation of samples. Color parameters were measured by spectrophotometer. The data were analyzed using one-way ANOVA and Tukey's post hoc test. Results. The mean color differences between Co-Cr, Zirconia and PEEK samples veneered with composite and the control sample were 2.91 (±0.45), 3.24 (±0.33), and 2.75 (±0.35) and for Co-Cr and Zirconia in ceramic groups were 6.46 (±0.32) and 1.97 (±0.19), respectively. One-way ANOVA and Tukey's post hoc test showed a significant difference between the core groups veneered with ceramic (P≤0.001). The type of core material in the composite veneered samples, however, did not make a significant difference (P=0.186). All groups except for Co-Cr-ceramic showed clinically acceptable results (ΔE < 3.7). Conclusion. Type of core material presented significant effect on the final color of restorations when ceramic was used as a veneer material. Conversely, the final color of composite veneer restorations is not affected by the core type. CAD/CAM composites can provide adequate color coverage for different core materials without exceeding a minimum clinically acceptable thickness. © 2023 Foujan Chitsaz et al.