Comparison of the Color Change of Porcelain Laminate Veneers Produced by Different Materials after Luting with Three Resin Cements
Operative Dentistry, cilt.48, sa.2, ss.166-175, 2023 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 48 Sayı: 2
- Basım Tarihi: 2023
- Doi Numarası: 10.2341/21-099-l
- Dergi Adı: Operative Dentistry
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.166-175
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Evet
Özet
Objectives: This study aimed to compare color change of porcelain laminate veneers fabricated with two lithium disilicate ceramics and a zirconiareinforced lithium silicate ceramic material after luting with conventional dual-cure, amine-free dual-cure, or light-cure resin cements using artificial accelerated aging (AAA). Methods and Materials: Ninety noncarious human maxillary central incisors were embedded in autopolymerizing acrylic resin blocks to prepare conventional laminate veneers with incisal coverage. Prepared teeth were randomly divided into 3 groups (n=30) to fabricate laminate veneer restorations using: (1) lithium disilicate ceramic, (2) lithium disilicate ceramic with high-density micronization, and (3) zirconia-reinforced lithium silicate ceramic. Impressions of the preparations were taken with a laboratory scanner. Acquired 3D images were processed into a surface tessellation language file. Data were exported for 3D printing on a printer, and laminate veneers were printed in castable wax resin. Ceramic veneers were heat-pressed after investment according to the manufacturer s recommendations and further divided into three groups (n=10) according to luting cement type: (1) light-cure resin cement, (2) amine-free dual-cure resin cement, and (3) conventional dual-cure resin cement. Color measurements were performed from the middle of each specimen with a spectrophotometer before and after AAA for 300 hours with a total energy of 150 kJ/m2. Color changes were calculated with the CIEDE 2000 (δE00) formula. Color differences were assessed using two-way analysis of variance (ANOVA) (α=0.05), and the paired t-Test was used to compare the L, a, and b parameters in each group before and after aging. Results: There were no significant differences between the ceramic groups (p<0.05). The color changes of the materials ranged from 2.26 to 3.13. All materials were above the clinically acceptable limit (δE00<1.8). The conventional dual-cure resin cement group showed more color change (p<0.05). Conclusions: Color changes were observed in all porcelain laminate veneers after artificial accelerated aging. The zirconia-reinforced lithium silicate veneers showed similar color changes as lithium disilicate veneers; the amine-free dualcure resin cement showed a similar color change as light-cure resin cement after aging.