A new surface treatment method: fusing glass ceramic to zirconia
10.3760/cma.j.issn.1002-0098.2011.s1.023
- VernacularTitle:表面融附玻璃陶瓷对氧化锆与树脂粘接强度的影响
- Author:
Chao CHEN
1
;
Ting JIANG
Author Information
1. 北京大学口腔医学院(口腔医院)
- Keywords:
Shear strength;
Zirconia;
Surface treatment;
Bonding;
Aging
- From:
Chinese Journal of Stomatology
2011;46(z1):99-103
- CountryChina
- Language:Chinese
-
Abstract:
Objective The aim of this study was to evaluate the resin bond strength and durability of bonding between zirconia and resin with a new surface treatment technique,fusing glass ceramic ( FGC ),on zirconia.Methods Sixty zirconia discs were equally divided into three groups and the surfaces were treated separately by the following methods,sandblasted by 50 μm aluminum oxide particle ( Sb),fused with one layer of glass ceramic (Fu),sandblasted by 50 μm aluminum oxide particle and then fused with one layer of glass ceramic (Sb-Fu).Twenty cast ceramic discs were used as control group.All the discs were cemented to surface of cured core-resin using resin luting cement Super bond C&B.Half of the discs in each group were performed thermal cycling ( 10 000 cycles between 5 and 55 ℃ ) test.Then shear bond strength test (SBS) were performed in each group.The surface morphology of all the groups before and after surface treatment was examined using scanning electron microscopy.Results The mean (SD) bond strength of Sb,Fu,Sb-Fu,and ceramic control groups were 24.76 ± 2.80,29.08 ± 5.80,28.67 ± 7.20,and 31.30 ±2.90 MPa.The value of Sb group was lower than other three groups significantly before thermal cycling test.The values of Fu and Sb-Fu groups had no significant differences with the group of ceramic control.The SBS values of each groups were 24.45 ± 3.90,28.50 ± 3.70,25.41 ± 2.00,and 32.19 ±3.90 MPa respectively after thermal cycling test,there were no significantly drop of SBS value in each groups.The failure mode after SBS test was primarily cohesive and mix failure in Sb-Fu and Fu groups.Conclusions For the limitation of this study and under the testing conditions,FGC treatment has possibility to enhance the resin bond strength and durability of zirconia/resin bonding.
