Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
권호 표지

IN VITRO STUDY OF DEMINERALIZATION INHIBITION EFFECT AND FLUORIDE UPTAKE INTO ADJACENT TEETH OF LIGHT-CURED FLUORIDE-RELEASING RESTORATIVES

수종의 불소방출 수복재의 탈회억제 효과 및 불소침투에 관한 연구

  • Kim, Song-Yi (Department of Pediatric Dentistry, School of Dentistry, Kyung-Hee University) ;
  • Choi, Sung-Chul (Department of Pediatric Dentistry, School of Dentistry, Kyung-Hee University) ;
  • Kim, Kwang-Chul (Department of Pediatric Dentistry, School of Dentistry, Kyung-Hee University) ;
  • Choi, Yeong-Chul (Department of Pediatric Dentistry, School of Dentistry, Kyung-Hee University) ;
  • Park, Jae-Hong (Department of Pediatric Dentistry, School of Dentistry, Kyung-Hee University)
  • 김송이 (경희대학교 치과대학 소아치과학교실) ;
  • 최성철 (경희대학교 치과대학 소아치과학교실) ;
  • 김광철 (경희대학교 치과대학 소아치과학교실) ;
  • 최영철 (경희대학교 치과대학 소아치과학교실) ;
  • 박재홍 (경희대학교 치과대학 소아치과학교실)
  • Received : 2010.05.10
  • Accepted : 2010.08.13
  • Published : 2010.08.31
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Abstract

The purpose of this study was to evaluate the effect of light cured fluoride-releasing materials on the inhibition of demineralization. In addition, the pattern of fluoride uptake of adjacent tooth structure was analyzed with EPMA. Eighty intact premolars were restored with $Filtek^{TM}$ Z250(control group, composite), Fuji Filling $LC^{TM}$(RMGI), Dyract $AP^{(R)}$ (compomer) and Beautifil II(giomer). Restored teeth were stored in distilled water for 30 days. Then sixty teeth(n=15) were exposed to demineralizing solution(pH 4.3). Demineralized teeth were bisected and polished. The specimens were observed with confocal laser scanning microscope. The depth of outer lesion and the thickness of inhibition zone were measured. Remained twenty teeth(n=5) were bisected for fluoride uptake analysis. The fluoride analysis were taken at enamel-restoration interface and dentin-restoration interface by electron probe micro-analyzer. The results are as follows: 1. The depth of outer lesion of Fuji Filling $LC^{TM}$ Dyract AP, Beautifil II was shallower than that of $Filtek^{TM}$ Z250 at the margin of restoration(p<0.05). 2. The thickness of caries inhibition zone of Fuji Filling $LC^{TM}$, Dyract AP, Beautifil II was greater than that of $Filtek^{TM}$ Z250 at the margin of restoration(p<0.05). 3. Fuji Filling $LC^{TM}$, Dyract AP, Beautifil II groups showed the greater fluoride uptake into enamel and dentine around restoration than $Filtek^{TM}$ Z250 group. 4. In dentin the difference of fluoride concentration were greater than in enamel, and Dyract AP showed the greatest fluoride concentration in dentin.

자이오머(Giomer)는 레진강화형글라스아이오노머에 견줄 만큼 불소방출량이 많다고 하나, 우식예방 효과에 관한 연구들이 많지 않아 임상적용에 대한 근거가 부족한 실정이다. 본 연구는 자이오머(BF 군)를 포함하여 레진강화형글라스아이오노머(FF 군), 콤포머(DA 군)와 대조군인 콤포짓(FZ 군)의 우식억제 효과와 주변 치질로의 불소침투 양상을 비교하기 위하여, 공초점레이저주사현미경과 전자탐침미세분석기를 이용하여 각 수복재의 우식예방 효과를 비교하였으며, 다음과 같은 결과를 얻었다. 1. 수복물 주위 이차 인공우식에서 법랑질 외측병변의 깊이는 FZ 군에서 가장 깊었으며, BF 군이 가장 작게 나타났다(p<0.05). 2. 수복물과 법랑질 계면에 나타난 탈회억제층의 두께를 관찰한 결과 FZ 군이 가장 작게 나타났으며, FF, DA, BF 간에는 유의성 있는 차이를 보이지 않았다(p<0.05). 3. 법랑질에 침투된 불소농도는 BF, FF, DA의 순으로 높게 나타났다. 4. 상아질에 침투된 불소농도는 DA, BF, FF의 순으로 높게 나타났으며, 이는 상아질-수복물의 접착 계면에 영향 받는 것으로 보인다.

Keywords

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