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KMID : 0352219930150010147
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Kyung Hee Dental Journal
1993 Volume.15 No. 1 p.147 ~ p.156
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EFFECTS OF CHEMICALLY CURED RESIN AND LEGHT CURED RESIN ON SHEAR BOND STRENGTH OF METAL BRACKET AND CERAMIC BRACKET
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Abstract
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This study was designed for comparison of shear bond strengths and failure patterns of four experimental groups which combinated mesh-backed metal brackets and texture based ceramic brackets (Transcend series 2000`T") with chemically cured resin (Mono Lok2`Tn´") and visible light cured resin (TransbondrM)
Brackets were bonded on the extracted human bicuspids, after etching them by manufacturer´s recom mand, and the shear bond strengths were measured on the Instron machine after 24 hrs passed in the 3´7t water bath.
The results were as follows.
1. Ceramic brackets, transcend series 2000CTM´, bonded with MonoLok2(TM´ showed statistically higher shear bond strength than mesh-backed metal brackets bonded with MonoLok2(TM´
2. There was no significant difference in shear bond strengths between metal and ceramic brackets bonded with Transbond`TM"
3. Ceramic brackets bonded with both TransbondTM´ and MonoLok2`T"" showed primarily fractures between brackets adhesive interface.
4. Enamel crack was not found in anyone specimen.
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KEYWORD
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