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KMID : 0362219950220020113
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Journal of The Korean Research Society for Dental Materials
1995 Volume.22 No. 2 p.113 ~ p.121
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A STUDY ON THE COMPRESSIVE STRENGTH OF EXPERIMENTAL LIGHT-ACTIVATED COMPOSITE RESINS
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Chae Min-Su
Chu Young-Ho
Bae Tae-Sung
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Abstract
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This study was performed to elaluate the effect of matrix resins and fillers on the compressive strength of light-activated composite resins. Four different types of composites were made by mixing the inorganic fillers of armorphous spherical silica and crushed quartz with resins of BisGMA/TEGDMA and UTeMA/TEGDMA. The specimens of 3mm in diameter and 6mm in length were prepared. Compressive test was subjected to a crosshead speed of 0.5mm/min and fracture surfaces were examined by SEM.
The results obtained were summarized as follows;
1. Compressive strength of the UTeMA-based composite resin with spherical filler was superior to the other composite resins(p<0.01).
2. Compressive strength of the BisGMA-based composite resins with significantly decreased after immersion in water for 7 days(p<0.05).
3. UTeMA-based composite resins showed the aspect of decrease in compressive strength after cold storage at 5℃.
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KEYWORD
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