Effects of surface modification with different concentration silica sol on bond strength of dental zirconia ceramic
- VernacularTitle:牙科氧化锆陶瓷表面不同浓度硅溶胶改性对其粘接强度的影响
- Author:
Yu WANG
;
Haifeng XIE
;
Feimin ZANG
- Publication Type:Journal Article
- Keywords:
Sol-gel;
Silica coating;
Dental Zirconia ceramic;
Bond strength
- From:
Journal of Practical Stomatology
1995;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the effects of surface modification with different concentration silica sol through sol-gel processing on bond strength between dental zirconia ceramic and resin cement. Methods:Silica coating was prepared by colloidal silica sol with concentrations of 20%,30%,40% on dental Zirconia ceramic. 32 discs zirconia ceramic specimens were fabricated and randomly divided into four groups respectively after polishing and sandblasting.The ceramic surfaces of different groups were received different treatments:(1)silane couple agent;(2)20% silica coating and silane couple agent;(3)30%silica coating and silane couple agent;(4) 40% silica coating and silane couple agent. Each ceramic block was bonded to light curing composite resin. All samples were stored in distilled water at 37 degrees for 24 h before a shear bond test to measure the bond strength of the resin cement to the ceramic surface. Scanning electrical microscopy (SEM) and energy depressive spectrum (EDS) were used to analyze the silica coating. Results:Contents of surface silicon increased after modification with silica coating prepared by sol-gel method. Bond strengths of groups with silica coating were significantly higher(P
