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KMID : 0358920100370010044
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Journal of the Korean Academy of Pedodontics
2010 Volume.37 No. 1 p.44 ~ p.52
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RESISTANCE TO DEMINERALIZATION OF ENAMEL OF PRIMARY TEETH ACCORDING TO RESTORATIONS: IN VITRO STUDY USING QLF
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Kwon Hae-Sook
Hyun Hong-Keun
Kim Young-Jae
Kim Jung-Wook
Jang Ki-Taeg
Kim Chong-Chul
Hahn Se-Hyun
Lee Sang-Hoon
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Abstract
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The objective of this in vitro study was to detect and monitor demineralization and remineralization of primary teeth according to restorative materials using quantitative light-induced fluorescence (QLF). A single bur hole was drilled on the each sound forty eight primary anterior teeth, and the specimens were divided into three groups. The cavity was restored with FiltekTM Z250(Group 1), F2000(Group 2), KetacTM N100(Group 3) following the manufacturer’s instructions. The teeth were subjected to the demineralizing buffer for 3 days, and then subjected to a remineralizing buffer for 14 days. The change of mineral loss(ΔQ) according to the stages was evaluated by QLF and the following results were obtained: 1. When demineralization was done, ΔQ was increased as follows. : Group 1 (-110.79 ± 27.77) < Group 2 (-104.84 ± 28.95) < Group 3 (-90.16 ± 21.87) : Resistance to demineralization was statistically significant in Group 3. 2. There was a statistically significant increase in ΔQ of all groups since 1st day of remineralization 3. The rate of remineralization, Δ (ΔQ)/day, showed significant high value in each group on the 1st day then decreased rapidly. 4. There was no statistically significant difference in the degree of remineralization among restorative materials.
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KEYWORD
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Primary teeth restoration, QLF(Quantitative light-induced fluorescence), Fluoride, Resistance to demineralization, Remineralization
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