The effect of light cured glass ionomer cment of the shear bond strength of orthodontic brackets.
- Author:
Cheol KIM
1
;
Young Jooh YOON
;
Kwing Won KIM
Author Information
1. Department of Dentistry, Graduate School of Chosun University, Korea.
- Publication Type:Original Article
- Keywords:
light cured glass ionomer cement;
shear bond strength
- MeSH:
Adhesives;
Bicuspid;
Dental Enamel;
Glass Ionomer Cements;
Glass*;
Humans;
Orthodontic Brackets*;
Plastics
- From:Korean Journal of Orthodontics
1997;27(2):327-334
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of this study was to evaluate clinical applicability of light cured glass ionomer cement as a othodontic adhesive. The metal brackets and plastic brackets were bonded with light cured glass ionomer cement(Fuji Ortho LC(R)) after polishing with a slurry of pumice, surface conditioning with 10% polyacrylic acid and chemically cured resin(Mono-Lok2(R)) after acid etching with 38% phosphoric acid on the extracted human bicuspids. The shear bond strength was tested with a universal testing machine(HGS-100A, Shimadzu Co., Japan) after storage in normal saline at 37degreesC or 24 hours and 48 hours. The results were as follows: 1. The shear bond strength of light cured glass ionomer cement group polished with a slurry of pumice was significantly lower than that of chemically cured resin group(P<0.01). 2. The shear bond strength of light cured glass ionomer cement group conditioned with 10% polyacrylic acid was significantly lower than that of chemically cured resin group(P<0.01). 3. The shear bond strength of light cued glass ionorner cement group conditioned with 10% polyacrylic acid was slightly higher than that of light cured glass ionomer cement group polished with a slurry of pumice, but there was no significant difference(P>0.05). 4. There was no significant difference between metal bracket group and plastic bracket group irrelevant off enamel conditioning(P>005). In summary, although the shear bond strength of light cured glass lionomer cement was lower than that of chemically cured resin, it night be clinically applicable.
