Effects of post-cure heat treatment on the bond strength of Ceramage composite resins for titanium casting using dif-ferent surface treatments
10.7518/hxkq.2013.06.004
- VernacularTitle:聚合后热压处理对不同表面处理的铸钛与聚合瓷结合强度的影响
- Author:
Jie LIU
1
;
Fanyu MENG
;
Hao WU
Author Information
1. 青岛大学医学院附属医院口腔修复科
- Keywords:
titanium;
composite resin;
post-cure heat treatment;
bond strength
- From:
West China Journal of Stomatology
2013;(6):561-564
- CountryChina
- Language:Chinese
-
Abstract:
Objective This study aims to investigate the effects of post-cure heat treatment (PCHT) on the bond strength of Ceramage composite resins for titanium casting using different surface treatments. Methods Metal specimens (n=30) were randomly divided into following five groups: polishing (group A), sandblasting (group B), acid etching after sandblasting (group C), PCHT after sandblasting (group D), and PCHT after sandblasting and acid etching (group E). The specimens were then processed and coated with Ceramage composite resins according to the grouping. After treatment, the shear bond strengths and microhardness of the specimens were evaluated. The fracture surface morphology of the titanium-Ceramage composite resin was observed using a scanning electron microscope. Results The shear bond strengths of groups A to E were (5.92±0.54), (10.25±0.55), (14.97±0.88), (14.41±0.63), and (19.95±0.52) MPa, respectively. No statistical difference was found between groups C and D, whereas the rest of the groups showed statistically significant differences (P<0.01). Visible polymerization residues were found on titanium porcelain metal surface of groups B to E. The microhardness values of groups D and E were higher than those of groups B and C (P<0.05). Conclusion PCHT significantly improves the bond strength and surface microhardness of Ceramage composite resins for titanium casting.
