THE COMPARISON OF POLYMERIZATION OF COMPOSITE RESIN INFLUENCED BY CURING DEPTH AND SHADE |
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광중합 복합레진의 색상과 깊이에 따른 중합도의 비교 |
최경호, 이주현, 박호원 |
강릉대학교 치과대학 소아치과학교실, 구강과학연구소 |
Correspondence:
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Abstract |
Adequate polymerization is a crucial factor in obtaining optimal physical properties and clinical performance of resin composite restorative materials. The purpose of this study was to determine the effectiveness of shade and depth on dental composite resin polymerized with plasma arc curing unit employing FTIR and microhardness. From this experiment, the following results were obtained : 1. The light transmission and microhardness by mode 6 in plasma arc curing were similar to by 20 secs in halogen light curing. 2. The experimental groups of A1, A2, A3, A3.5 were not signifcant difference to light transmission and microhardness on surface and 2mm depth, but were significant difference on 3mm and 4mm depth. Especially light transmission and microhardness were small in darker shade and deeper thickness. 3. Compared with depth cure, uncured monomer amount increased at more than 2mm depth. 4. The light transmission by FTIR and polymerization by microhardness were significant corelation |
Key Words:
Transmission coefficient, Degree of conversion, Microhardness, FTIR |
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