Journal of the Korean Academy of Pediatric Dentistry 2005;32(2):284-292.
Published online May 31, 2005.
A STUDY OF MONOMER RELEASE FROM PIT AND FISSURE SEALANTS ACCORDING TO VARIOUS LIGHT SOURCES
 
광원에 따른 수종의 치면열구전색제로부터 용리되는 모노머에 관한 연구
서현우, 박호원
강릉대학교 치과대학 소아치과학교실.구강과학연구소
Correspondence:  , 
Abstract
The aim of this study was to identify and quantify the major or detectable monomers released from any of five commercially-available, light-cured pit and fissure sealants with three different light sources : conventional halogen light curing unit, plasma arc light curing unit and LED curing unit. After curing, specimens were immediately immersed in distilled water for different time intervals. The time related release of monomers were analyzed by high performance liquid chromatography(HPLC). Identification and quantitative analysis of monomers were performed by the comparison of the elution time and the absorption peak height of the eluates with those of the authentic sample. The result of this study can be summarized as follows. 1. Standard solution peaks with retention times of 2.3, 3.2, 5.6, 6.5, 10.4 minutes were identified as BPA, TEGDMA, UDMA, Bis-GMA, Bis-DMA, respectively. 2. None of the chromatograms of the tested sealants displayed peaks with the same retention time as that of the standard solution, except for TEGDMA. 3. The highest release rate of TEGDMA was observed during the 12hr period for all samples and declined thereafter. 4. The elution of TEGDMA from curing with Halogen curing unit for 20 second and LED for 10 second was less than that resulting from curing with Plasma arc for 3 second. 5. TEGDMA was detected at much lower levels in eluates from the Pit & Fissure $SealantTM than other sealants. The elution of TEGDMA from the Helioseal® F cured with Halogen light curing unit, the ConciseTM cured with Plasma arc curing unit and the Teethmate® F-1 cured with LED curing unit were higher than other sealants.
Key Words: Halogen, Plasma arc, LED, HPLC


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