Journal of the Korean Academy of Pediatric Dentistry 2003;30(2):245-253.
Published online May 31, 2003.
THE COMPARISON OF LIGHT-CURED COMPOSITE RESIN POLYMERIZATION BY FTIR
 
FTIR을 이용한 복합레진의 중합도 비교
이주현, 박호원
강릉대학교 치과대학 소아치과학교실
Abstract
The degree of conversion of cross-linked polymer has great importance in determining the physical and mechanical properties, and biocompatibility. Therefore, this study examined the comparison of light-cured composite resin polymerization of various light-curing systems composed of plasma arc, halogen, LED curing units and pluse-delay curing with FTIR. From this experiment, The following results were obtained : 1. From FTIR, the degree of conversion(DC) of composite resin was 34.52-49.31%, DC of composite resin used in Flipo was 39.36±1.22%, CrediII 45.64±1.34%, XL3000 43.48±1.34%, VIP(mode 4) 44.31±0.72%, LUXOMAX 49.31±2.37%, Elipar Freelight 44.51±0.62% and 34.52±0.85% in pulse-delay curing. 2. The degree of conversion of composite resin in each light-curing unit was highest DC of the LUXOMAX system, lowest DC of the pulse-delay curing. 3. Compared with other curing system, Flipo, LUXOMAX, and pulse-delay curing were significant difference(p<0.05). 4. In same curing method group, the differences of each light-curing unit were no significace in halogen(conventional) curing method(p>0.05), but significance in plasma arc curing and LED curing method(p<0.05).
Key Words: Degree of conversion, Plasma arc, LED, Pulse-delay curing, FTIR


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