Yılmaz O., Göze Saygın A.
Cumhuriyet Dental Journal, cilt.28, sa.4, ss.594-599, 2025 (Hakemli Dergi)
Özet
Aim: The aim of this study was to evaluate the bonding strength of pre-heated composite resins used in the repair of CAD/CAM ceramic materials.
Material and Method: Samples prepared from Feldspathic ceramic (VITABlocs Mark II, VITA Zahnfabrik, Germany), Hybrid ceramic (Vita Enamic, VITA Zahnfabrik, Germany), Zirconia-reinforced lithium silicate ceramic (Vita Suprinity, VITA Zahnfabrik, Germany) CAD/CAM materials were fixed in autopolymerised acrylic. The samples were separated into two groups (n=10) according to the temperature of the composite resin. As the surface procedure, 9% hydrofluoric porcelain acid (Ultradent Products Inc., Cologne, Germany) was applied to the ceramic surface for 20 seconds. In accordance with the manufacturer’s instructions, Monobond was applied for 20 seconds and Heliobond for 10 seconds. The composite resins at different temperatures (23±2°C, 65°C) were placed in silicone moulds (4mm diameter, 2mm height) and polymerised. The bonding strength of the samples was measured in a Universal test device and the data were analyzed using the Two-way ANOVA and Tukey test in SPSS vn. 23.00 software.
Results: The highest bonding strength value (60.58 MPa) was obtained in Group VS-RT and the lowest (4.36 MPa) in Group VB-PHT. No significant difference was observed between Group VB and Group VE (p>0.05). A significant difference was determined in Group VS.
Conclusion: Within the limitations of the study, the results showed that heat-treated composite resin reduced the bonding strength of Vita Suprinity material and increased the bonding strength of Feldspathic and Vita Enamic ceramics.