Shear bond strength of the three different kinds of resin cement on CAD/CAM ceramic inlay.
10.4047/jkap.2013.51.1.20
- Author:
Chul Woo BAEK
1
;
Cheol Woo PARK
;
Jun Sub PARK
;
Jae Jun RYU
Author Information
1. Department of Esthetic Restorative Dentistry, Graduate School of Clinical Dentistry, Korea University, Seoul, Korea. koprosth@unitel.co.kr
- Publication Type:Original Article
- Keywords:
Resin cement;
Cerec3;
Ceramic inlay;
Shear bond strength;
Thermocycling
- MeSH:
Ceramics;
Collodion;
Dentin;
Head;
Inlays;
Molar;
Resin Cements;
Tooth
- From:The Journal of Korean Academy of Prosthodontics
2013;51(1):20-26
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: The purpose of this study was to evaluate the bond strengths between the latest CAD/CAM ceramic inlay and various resin cements which are used primarily for esthetic restoration. MATERIALS AND METHODS: Cylindrical ceramic blocks(Height: 5 mm, diameter: 3 mm) were fabricated by using Cerec3 and bonded on the dentin of the ninety extracted caries-free molars using three different kinds of resin cement(Unicem(R), Biscem(R), and Variolink II(R)) according to the manufacturer's instructions. Ninety specimens were divided into 3 groups according to three different kinds of resin cement. Half of each group were conducted thermocycling under the conditions of the 5 - 55degrees C, 5,000 cycle but the other half of them weren't. All specimens were kept in normal saline 37degrees C, for 24 hours before measuring the bond strength. The shear bond strength was measured by Universal testing machine with a cross head speed of 0.5 mm/min. The results were analyzed statistically by t-test and one-way ANOVA. RESULTS: Unicem(R) group showed the highest shear bond strength despite a slight decline by thermocycling. The shear bond strength of Unicem(R) group and ValiolinkII(R) group were significantly influenced by thermocycling, whereas Biscem(R) group was not influenced (P<.05). There were no significant differences in the bond strength between the three groups without thermocycling, but there was significant differences between Unicem(R) group and Valiolink II(R) group with thermocycling(P<.05). CONCLUSION: It has been shown to be clinically effective when the self-adhesive resin cements Unicem(R) and Biscem(R) were used instead of the etch-and-rinse resin cement Valiolink II(R) during the bonding of CAD/CAM ceramic inlay restorations with teeth.
