Selcuk Dental Journal, cilt.12, sa.1, ss.48-53, 2025 (Scopus)
Aim: The aim of the study is to evaluate the effect of aging and polishing on the optical properties of monolithic zirconias. Methods: A total of 90 disk-shaped samples with a diameter of 13 mm and a thickness of 1 mm were prepared from three different monolithic zirconia. The obtained samples were divided into 3 different groups: the group to which a polishing kit was applied, the group to which polishing paste was applied following the polishing kit, and the group to which glaze was applied. All specimens were cleaned in an ultrasonic bath for 10 minutes after polishing. Color measurements of samples performed using the spectrophotometer. Color characteristics were measured according to the CIE L*a*b* color system, and the average L*, a* and b* values were calculated. Translucency Parameter (TP) method was used for translucency measurements. All samples were aged at 134☐C 0.2 MPa for 30 min. Then, second color and translucency measurements were made. Results: According to comparisons between the measurements, Katana monolithic zirconia had a more significant color change and translucent result than other two monolithic zirconias. Katana monolithic zirconia polishing by rubber gave a significantly more translucent result after aging than the polishing processes with paste and glaze. Conclusion: Based on this study's findings, rubber polishing can be recommended for Katana monolithic zirconia. Rubber, paste and glaze polishing processes can be applied for these monolithic zirconias.