Journal of the Korean Academy of Pediatric Dentistry 2004;31(3):421-430.
Published online August 31, 2004.
ELUTION OF RESIDUAL MONOMER ACCORDING TO VARIOUS LIGHT SOURCES AND CURING TIME ON THE POLYMERIZATION OF PHOTOACTIVATED PIT AND FISSURE SEALANTS
1
2 
광중합 광원의 종류와 조사시간에 따른 치면열구전색제의 미반응 모노머 용출
오유향1, 박윤경2, 이난영1, 이창섭1, 이상호1
1조선대학교 치과대학 소아치과학교실
2조선대학교 치과대학 단백질소재연구센터
Correspondence:  , 
Abstract
The purpose of this study was to measure and compare the amount of unreacted TEGDMA from pit and fissure sealants cured with three different light sources; conventional halogen light curing unit, plasma arc light curing unit and argon laser. The specimens were eluted in distilled water for different time intervals. The time-related release of TEGDMA were analyzed by reverse-phase high performance liquid chromatography(HPLC). The result of present study can be summarized as follows: 1. The time-related release of TEGDMA decreased with increasing curing time in conventional halogen light, however, that not statistically significant difference(p>0.05). 2. The elution from the specimens cured for 6 and 9 seconds with plasma arc light was similar results corresponding with the time-related TEGBMA release, and was significantly lower than that cured for 3 seconds(p<0.05). 3. The elution of TEGDMA from the specimens cured with argon laser was significantly higher than that cured with halogen and plasma arc light(p<0.05). 4. The elution of TEGDMA from under recommended time of three different light sources were showed to be no statistically significant difference(p>0.05). 5. In time-related release of TEGDMA from recommended time of each light sources, the results correspond to 40 seconds of halogen light and 6 seconds of plasma arc light were similar(p>0.05). 6. The elution of TEGDMA, from over recommended time of three different light sources were showed to be no statistically significant difference(p>0.05). In this study, I suggest that curing time of plasma arc light is 6 and/or 9 seconds in the field of clinical pediatric dentistry claiming its effectiveness in optimal polymerization and reduced chair time.
Key Words: Light sources, TEGDMA(Triethyleneglycol dimethacrylate), Reverse-phase high performance liquid chromatography(RP-HPLC)
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