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KMID : 1157520110070020069
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International Journal of Clinical Preventive Dentistry
2011 Volume.7 No. 2 p.69 ~ p.76
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Change of the Dentin Surface after the Intake of the Fluoridated Milks to Rat
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Park Jin-young
Jang Yeon-Soo
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Abstract
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Objective: The purpose of the study was to confirm anticavity effects of fluoridated milk.
Methods: For this test, 3 type fluoridated milks, that is to say control group (0 ppmF), test group 1 (1.25 ppmF) and test group 2 (2.5 ppmF) were made respectively and consumed by 3 rats group (each was consisted of 11 rats) for 4 weeks. After intake of fluoridated milks, on extracting incisor of all specimens for each group and were embeded with the resin and grinded finely. The surface micro-hardness test and SEM checking difference among groups observed.
Results: Dentin micro hardness of test group 1 compared with control group increased by 42.3% (p＜0.05). Dentin micro hardness of test group 2 compared with control group increased by 60.4% (p＜0.05). Dentin micro hardness increment of test group 2 compared with dentin micro hardness increment of test group 1 was high by 18.1% (p＜0.05). The results of observation by SEM (×5,000, ×7,000) show that the higher the fluoride concentration in the sequence of control group, test group 1, test group 2, the smoother surface.
Conclusion: Above results show that caries reducing effect tends to increase with fluoride concentration in milk consumption.
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KEYWORD
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anticavity, fluoridated milks, micro-hardness test, SEM
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