<i>In</i><i> vitro</i> color prediction of the shade-gradient 5 mol% yttria-partially stabilized zirconia ceramics in different thicknesses: use of try-in pastes and resin cements
JOURNAL OF ADVANCED PROSTHODONTICS, cilt.18, sa.3, ss.252-260, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 18 Sayı: 3
- Basım Tarihi: 2026
- Doi Numarası: 10.4047/jap.2026.18.3.252
- Dergi Adı: JOURNAL OF ADVANCED PROSTHODONTICS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.252-260
- Gazi Üniversitesi Adresli: Evet
Özet
PURPOSE The objective of the present in vitro study is to evaluate the color prediction of shade-gradient 5 mol% yttria-partially stabilized zirconia (5Y-PSZ) ceramics in different thicknesses using try-in pastes, unpolymerized resin cements, and polymerized resin cements. MATERIALS AND METHODS Specimens with thicknesses of 0.4 mm, 0.6 mm, and 0.8 mm were fabricated using 5Y-PSZ zirconia ceramic. Substructure specimens were prepared from composite resin in A1 shade. Color parameters were measured after try-in paste application, before resin cement polymerization, and after resin cement polymerization. The color differences between the try-in paste and the unpolymerized resin cement (Delta E-00-1), the try-in paste and the polymerized resin cement (Delta E-00-2), and the unpolymerized resin cement and polymerized resin cement (Delta E-00-3) were calculated using the CIEDE2000 formula. Data were statistically analyzed using the two-way repeated-measures ANOVA and the Bonferroni adjustment (alpha = 0.05). RESULTS Two-way repeated-measures ANOVA revealed no interaction between thickness and prediction method (P = .128), but both factors significantly affected Delta E-00 values (P < .05). Among the thickness groups, 0.4 mm specimens showed the highest Delta E-00 values (1.45 +/- 0.9), while 0.6 mm and 0.8 mm specimens demonstrated significantly lower Delta E-00 values (P < .05). Regarding the prediction method, all groups showed statistically significant differences (P < .05), with Delta E-00-1 exhibiting the highest Delta E-00 value (1.38 +/- 0.7), followed by Delta E-00-2 and Delta E-00-3. CONCLUSION In thin restorations (0.4 mm), color prediction became more challenging. Visually perceptible color differences were observed among try-in pastes and resin cements after polymerization; therefore, the use of unpolymerized resin cement yielded more reliable color prediction.