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KMID : 0353319900140010065
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Oral Biology Research
1990 Volume.14 No. 1 p.65 ~ p.76
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A Study on the remineralization of artificially induced initial enamel lesion in vitro
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Choi Yong-Sung
Lee Sang-Ho
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Abstract
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To provide basic information for understanding the mechanism of de-and remineralization and clinical data on effect of remineralization using fluorides in the early stage enamel caries, microhardness study of sound enamel, artificially induced initial enamel lesion and remineralized enamel has been conducted in permanent premolar teeth; microhardness
profiles were determined with Knoop hardness diamond load intending at about 50(em interval across the polished surface from outer surface to deep area.
The results were as follows:
1. Microhardness numbers from 20㎛ to 120㎛ in enamel depth of artificially- induced initial enamel lesion group were lower than those of sound enamel groups.
2. In artificially induced initial enamel lesion group, microhardness number of surface zone (20㎛ in enamel depth)was higher than that of subsurface zone (70~170㎛).
3. Remineralized groups showed increased microhardness numbers.
4. Among remineralized groups, APF topical applied (Troup showed the highest microhardness numbers(P < 0. 05) and no differance between SNIFP dentifrice group and NaF rinsing group(P ) 0.05).
5. Remineralizin- effect by fluorides influenced upto 170km in depth from outer enamel surface.
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