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- W2364706910 abstract "Objective To study the subsurface lesion remineraling effect of slow-release fluoride tablet and precipitate.Methods 12 bovine enamel chips with 48 hours artificial caries were divided into two groups without surface microhardness different.The two groups were put in a titration system and treated by 0.25mgF and 0.5mgF tablet respectively,One tablet was replaced every 4 hours for 88 hours.The microhardness of longitudinal section,one chip from each group after 11,22 tablets treatment,was measured in 10μm intervals from the enamel margin to the depth of 225μm into the enamel.The surface microhardness of the other chips of each group also was measured at the same time.Histology change was examined by polaring microscopy and microradiography.Precipitate was detected by SEM and Energy Disperse Spectrograph.Results The microhardness of enamel surface of the group treated by 11 and 22 tablets of 0.25mgF were 43.18±10.95 and 73.39±10.10kg/mm 2 respectively,P 0.001 .The group treated by 0.5mgF were 35.70±7.30 and 86.00±18.51kg/mm 2,P 0.001 .But the microhardness of the two groups after treated by same number tablets were not different,P 0.05 .The microhardness of longitudinal section of two groups increased significantly after treatment,but no different between groups was observed.The group treated by 22 tablets of 0.25mgF showed the maximum mineralization disposed by polaring microscopy and microradiography.The shapes of precipitate were round,elliptical,or cylinder.The main constitutions of them were calcium and phosphates,and some on enamel surface with higher F.Conclusion The subsurface lesion can be remineralized by the slow-release fluoride tablet,and 0.25mgF seems more effctive.The precipitates are calcium and phosphates,and some of them may be CaF 2" @default.
- W2364706910 created "2016-06-24" @default.
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- W2364706910 date "2001-01-01" @default.
- W2364706910 modified "2023-09-27" @default.
- W2364706910 title "Remineralization of subsurface lesion by slow release fluoride tablet and precipitate analysis" @default.
- W2364706910 hasPublicationYear "2001" @default.
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