The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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Effect of remineralization and inhibition to demineralization after fluoride gel or hydroxyapatite paste application on stripped enamel

치간 삭제 후 불소 또는 수산화인회석 도포 시 재광화 및 탈회억제에 관한 연구

  • Hong, Hyun-Sil (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Kim, Ho-Young (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Sung, Ji-Young (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Cho, Jin-Hyoung (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Kim, Sang-Cheol (Department of Orthodontics, School of Dentistry, Wonkwang University)
  • 홍현실 (원광대학교 치과대학 치과교정학교실) ;
  • 김호영 (원광대학교 치과대학 치과교정학교실) ;
  • 성지영 (원광대학교 치과대학 치과교정학교실) ;
  • 조진형 (원광대학교 치과대학 치과교정학교실) ;
  • 김상철 (원광대학교 치과대학 치과교정학교실)
  • Received : 2009.09.29
  • Accepted : 2009.12.02
  • Published : 2010.08.30
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Abstract

Objective: The aim of this study was to evaluate the effect of remineralization and inhibition to demineralization after fluoride gel (acidulated phosphate fluoride, APF) or hydroxyapatite (HAp) paste application on interdentally stripped teeth. Methods: After interdental stripping, 1.23% APF or 5%, 10% HAp paste were applied for 7 days for remineralization. Afterwards, teeth were exposed to lactate carbopol buffer solution for demineralization. Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) were used to compare change in surface contents and crystal structures after remineralization, and then after demineralization. Results: EDS analysis indicated that calcium (p < 0.001) and phosphate (p < 0.01) contents were increased after 10% HAp paste application on stripped enamel, calcium (p < 0.05) and phosphate (p < 0.01) contents were increased after 5% HAp paste application, and fluoride (p < 0.01) contents were increased after 1.23% APF application. SEM image showed that enamel surfaces became smoother and crystal structures became small and compact after APF or HAp application. After demineralization, calcium (p < 0.05) and phosphate (p < 0.05) contents remained increased on the enamel remineralized with 10% HAp paste, and phosphate (p < 0.05) contents remained increased on the enamel remineralized with 5% HAp paste. After demineralization, surfaces looked less destroyed in the enamel remineralized beforehand than those of the control, and small pores between crystal structures, formed by remineralization were remained. Conclusions: Hydroxyapatite paste and fluoride gel were helpful to remineralize and inhibit deminerlization on stripped enamel.

치간 삭제 후 재광화 및 치아우식 예방법을 찾기 위한 노력의 일환으로 1.23% 인산화불소 젤 또는 5%, 10% 수산화인회석함유 페이스트를 치간 삭제된 법랑질 표면에 도포하였고, 그 후 젖산탈회용액으로 처리하였다. 법랑질 표면의 재광화 및 탈회 후 결정구조 변화를 주사전자현미경으로 관찰하고 칼슘, 인, 불소 함량 등의 변화를 energy dispersive X-ray spectroscopy로 분석해서 비교하였다. 치간 삭제 후 5%, 10% 수산화인회석함유 페이스트를 도포한 군에서 칼슘과 인 함량이 증가하였고, 1.23% 인산화불소 젤 도포 군에서는 불소 함량이 증가하였다. 또한 모든 재광화 제제에서 법랑질 표면이 매끄럽고 부드러워졌으며 결정구조가 작고 치밀해짐을 관찰할 수 있었다. 10% 수산화인회석함유 페이스트로 재광화한 군은 탈회 후에도 칼슘과 인 함량이 증가된 채로 유지되었고, 5% 수산화인회석함유 페이스트로 재광화한 군은 탈회 후 인 함량이 증가된 채로 유지되었다. 치간 삭제 후 탈회 처리 시 대조군의 법랑질은 파괴양상이 심해 거친 굴곡으로 이루어진 불규칙한 표면 상태를 나타내었으나 불소 및 수산화인회석으로 재광화한 군에서는 법랑질의 파괴양상이 적어 작은 결정입자들과 미세공극이 유지되었다.

Keywords

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