A comparative study on shear bond strengths influenced by time elapsed after bracket bonding with a light-cured glass ionomer cement.
- Author:
Ki Soo LEE
1
;
Ho Nam LIM
;
Young Guk PARK
;
Kang Seob SHIN
Author Information
1. Department of Orthodontics, College of Dentistry, Kyung Hee University, Korea.
- Publication Type:Comparative Study ; Original Article
- Keywords:
Light cured glass ionomer cement;
Bracket shear bond strength
- MeSH:
Adhesives;
Bicuspid;
Dental Enamel;
Glass Ionomer Cements*;
Glass*;
Humans;
Orthodontic Brackets;
Resin Cements;
Water
- From:Korean Journal of Orthodontics
1995;25(5):605-611
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of this study was to evaluate effects of time on shear bond strengths of a light-cured glass ionomer cement and chemically cured resin cement to enamel, and to observe the failure patterns of bracket bondings. Shear bond strength of a light-cured glass ionomer cement were compared with that of a resin cement Metal brackets were bonded on the extracted human bicuspids. Specimens were subjected to a shear load(in an Instron machine) after storage at room temperature for 5 and 15 minutes, after storage in distilled water at 37degrees C for 1 and 35 days. The deboned specimens were measured m respect of adhesive remnant index. The data were evaluated and tested by ANOVA, Duncan's multiple range test, and t-test, and those results were as follows. 1. The shear bond strength of light-cured glass ionomer cement is higher than that of resin cement at 5 and 15 minutes. 2. The shear bond strengths of both light-cured glass ionomer cement and resin cement increase with time. There was no significant difference in those of both 1 day group and 35 day group. 3. LIght-cured glass ionomer cement is suitable as orthodontic bracket adhesives.
