PH 4.3에서 재광화 용액의 포화도에 따른 인공 탈회된 법랑질의 동력학적 변화 = THE DYNAMIC CHANGE OF ARTIFICIALLY DEMINERALIZED ENAMEL BY DEGREE OF SATURATION OF REMINERALIZATION SOLUTION AT pH 4.3

국문 초록 (Abstract)

법랑질의 재광화에 영향을 주는 요인으로는 PH, 불소 농도, 포화도 등이 있다. 본 연구에서는 유산 완충 탈회용액을 이용하여 법랑질 시편을 인공 탈회시킨 후, pH 4.3에서 포화도를 0.22, 0.30, 0.35로 달리한 세가지 재광화 용액에 10일간 처리하여 나타나는 변화를 편광현미경으로 관찰하여 전체 탈회 깊이와 건전 표층 폭의 변화를 조사하였다. 또한 Image program (Scion Image analyzer)을 이용하여 병소 부위의 평균 mineral density를 측정하여 탈회와 재광화 후 무기질 변화량을 통해 인공 탈회된 법랑질의 동력학적 변화를 관찰하였다.
1 재광화 후 모든 군에서 건선 표층의 폭이 증가하였는데, 포화도가 증가할수록 건전 표층 폭이 증가하였다 (P< .05)
2 재광화 후 mineral density 변화를 관찰한 결과 포화도가 낮은 군에서는 이온의 침착이 병소 전반적으로 일어났으나, 포화도가 높은 군에서는 건전 표층 부위와 표층하 병소의 하층부에서 이온의 침착으로 mineral density 가 증가하였고 표층하 병소의 상층부에서는 탈회가 진행되어 mineral density가 감소하였다.
3 재광화 후 모든 군에서 무기질량이 증가하였고 전체 탈회 깊이도 증가하였으나 각 군간에 통계적 유의차는 없었다.
본 실험에서 인공 탈회된 시편을 pH 4.3인 재광화 용액에 처리시 포화도가 높을수록 건전 표층에서 더 많은 재광화 현상이 일어났고 표층하 병소에서는 재광화 현상이 적게 일어났으며 재광화 후 모든 군에서 전체 탈회 깊이는 증가하였다.

다국어 초록 (Multilingual Abstract)

The purpose of this study is to observe and compare the dynamic change of artificially demineralized enamel by remineralization solutions of different degrees of saturation at pH 4.3
In this study, 30 enamel specimens were demineralized artificially by lactic acid buffered solution. Each of 10 specimens was immersed in pH 4.3 remineralization solution of three different degrees of saturation (0.22, 0.30, 0.35) for 10 days. After demineralization and remineralization, images were taken by a polarizing microscope (× 100). The density of lesion were determined from images taken after demineralization and remineralization.
During remineralization process, mineral deposition and mineral loss occurred at the same time. After remineralization total mineral amount and width of surfacc lesion increased in all groups. The higher degree of saturation was, the more mineral deposition occurred in surface lesion and the amount of mineral deposition was not much in subsurfacc lesion. Total demineralized depth increased in all groups.

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