Journal of the Korean Academy of Pediatric Dentistry 2003;30(4):684-695.
Published online November 30, 2003.
EFFECT OF UNREACTED RESIN MONOMES ON THE ATIVITY OF CARIOGENIC BACTERIA
1
2 
미반응 레진단량체가 우식유발성 세균의 활성에 미치는 영향
박성규1, 김화숙2, 유소영2, 한진주2, 국중기2, 이난영1, 이상호1, 이창섭1
1조선대학교 치과대학 소아치과학교실 및 구강생화학연구소
2조선대학교 치과대학 구강생화학 교실 및 구강생화학연구소
Correspondence:  , 
Abstract
The aim of this study was to investigate the effect of composite resin components on proliferation and glucan synthesis by cariogenic bacteria, Streptococcus mutans and Streptococcus sobrinus. Light curing pit and fissure sealant was chosen for evluation. Specimens were eluted in deionized water for 10 minutes, 1, 12, and 24 hours. Extracts of specimens were diluted into 1/2, 1/4, and 1/8 with addition of BHI broth and BHI-YS. Bacteria were cultured in media included eluted components, and measured optical density(A600). The following results were obtained 1. 1/4 concentration of elutes for 10 minutes significantly inhibited the proliferation of S. mutans, whereas 1/2, 1/8 concentration of elutes stimulated it. Also, exacts, especially 1/2, 1/4 concentration, for 1 hours stimulated it. But exacts for 12, 24 hours had not effects on the proliferation of S. mutans. 2. 1/4 concentration of elutes for 10 minutes inhibited growth of S. sobrinus, whereas extracts for 1, 12, 24 hours had not effects on the proliferation of S. sobrinuss. 3. Extracts from composite resin stimulated total growth of S. mutans more than growth control group, where as inhibited it of S. sobrinus. 4. Extracts from composite resin, especially 1/4 concentration of it for 10 minutes increased the formation of water insoluble glucan of S. mutans. But elutes for 1, 12, 24 hours, and 1/8 concentration of it for 10 minutes inhibited it. 5. Except 1/4 concentration of elutes for 10 minutes, extracts decreased the formation of water insoluble glucan of S. sobrinus. 6. Total amount of formated glucan was 3-fold higher in S. mutans than in S. sobrinus.
Key Words: S. mutans, S. sobrinus, Unreacted resin monomer, Water insolubel glucan


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