Korean J Orthod.  1995 Oct;25(5):605-611.

A comparative study on shear bond strengths influenced by time elapsed after bracket bonding with a light-cured glass ionomer cement

• Lee KS
• Lim HN
• Park YG
• Shin KS

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.

Keyword

Light cured glass ionomer cement; Bracket shear bond strength

MeSH Terms

Adhesives
Bicuspid
Dental Enamel
Glass Ionomer Cements*
Glass*
Humans
Orthodontic Brackets
Resin Cements
Water
Adhesives
Glass Ionomer Cements
Resin Cements
Water