치위생과학회지 (Journal of dental hygiene science)

  • 제11권2호
  • /
  • Pages.69-76
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  • 2011
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  • 1598-4478(pISSN)
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  • 2233-7679(eISSN)
한국치위생과학회 (The Korean Society of Dental Hygiene Science)
권호 표지

불소 도포 방법과 적용 횟수에 따른 법랑질의 표면 특성

The Surface Characteristics of Enamel according to Fluoride Application Methods and Frequency

  • 장선옥 (한림성심대학 치위생과) ;
  • 최은미 (경복대학 치위생과) ;
  • 오상환 (건양대학교 치위생학과) ;
  • 강민경 (연세대학교 치과대학 치과생체재료공학교실 및 연구소) ;
  • 김광만 (연세대학교 치과대학 치과생체재료공학교실 및 연구소)
  • Jang, Sun-Ok (Dept. of Dental Hygiene, Hallym College) ;
  • Choi, Eun-Mi (Dept. of Dental Hygiene, Kyungbok College) ;
  • Oh, Sang-Hwan (Dept. of Dental Hygiene, College of Medical Science, Konyang University) ;
  • Kang, Min-Kyung (Department and Research Institute of Dental Biomaterials and Bioengineering, College of Dentistry, Yonsei University) ;
  • Kim, Kwang-Man (Department and Research Institute of Dental Biomaterials and Bioengineering, College of Dentistry, Yonsei University)
  • 투고 : 2011.03.02
  • 심사 : 2011.04.07
  • 발행 : 2011.04.30
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초록

본 연구는 전문가불소도포로 사용되고 있는 1.23% APF겔과 2% NaF 용액의 적용 횟수와 방법을 달리하여 적용시 치아 경조직의 내산성에 영향을 줄 수 있을지 비교분석하였으며, 다음과 같은 결과를 얻었다. 1. 불소도포를 실시한 모든 그룹에서 표면미세경도가 증가하였고(p<0.05), 불소도포의 횟수를 달리하는 경우 2% NaF 용액을 4회 이온 도포한 그룹에서 표면 미세경도값이 가장 높았다. 2. pH-cycling model 적용 후의 표면미세경도의 변화 비교는 모든 Group에서 불소도포 후에 비해 감소하였지만 불소 적용을 하지 않은 Control group은 가장 낮은 표면미세경도값을 나타내었으며, Control group과 전문가불소도포를 한 Group간에 표면미세경도값은 유의한 차이를 나타내었다(p<0.05). 3. 불소도포 하기 전 Baseline에 비해 pH-cycling model 적용 후 표면미세경도 값은 Control group에서 가장 많은 소실 값을 나타내었고, NaF 용액을 이용하여 4회 이온도포한 Group이 가장 적은 표면미세경도 소실값을 나타내었으며, 유의한 차이를 보였다(p<0.05). 4. Control group에 비해 1회씩 불소 도포한 Group에서 법랑질의 탈회가 적게 관찰되었고, 4회 불소 도포한 Group의 표면은 Control group과 1회씩 불소 도포한 Group에 비해 규칙적인 표면 양상을 보였다. 이상의 실험결과를 종합해보면 법랑질 산부식증 유발환경에서 2% NaF 용액을 4회 이온도포하는 전문가불소도포법이 법랑질 탈회를 최소화할 수 있는 방법으로 나타났다.

The aim of this study was to compare the effects on the resistance to demineralization by the frequency and method of fluoride application in vitro. ninety-one human enamel specimens were embedded in acrylic resin with the labial surfaces exposes. The specimens were divided into 7 groups; (1) non-treated; (2) 1.23% APF gel 1 time; (3) 2% NaF sol 1 time; (4) 2% NaF sol iontophoresis 1 time; (5) 1.23% APF gel 4 time; (6) 2% NaF sol 4 time; (7) 2% NaF sol iontophoresis 4 time. All the groups were immersed in the remineralizing solution (RS) before baseline and divided into 7 test groups of 13 specimens each. All the specimens were exposed to a pH-cycling model which consisted of demineralization (6 hours) and remineralization (18 hours) for 5 days. The Vickers surface micro-hardness number of all the specimens was measured using microhardness tester and the specimen surfaces were observed by scanning electron microscope (SEM). The results were analyzed using one-way ANOVA followed a Tukey's multiple comparison at a significance level of 0.05. The group 7 showed higher level of microhardness after Fluoride application. The group 1 showed lowest level of microhardness but group 7 showed higher level of microhardness after pH-cycling model, there were significant differences between groups. After the modified pH-cycling, the 2% NaF solution with the iontophoresis group showed the best resistance to demineralization(p<0.05). These results were also confirmed by SEM. The fluoride iontophoresis method was the most effective of the regimens in increasing the acid resistance of the enamel.

키워드

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