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KMID : 0358920060330030498
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Journal of the Korean Academy of Pedodontics
2006 Volume.33 No. 3 p.498 ~ p.503
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LONG-TERM EVALUATING OF THE REMINERALIZATION OF INTERPROXIMAL CARIES ADJACENT TO GLASS IONOMER RESTORATIONS: A MICRO-CT STUDY
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Lee Hyeok-Sang
Kim Jung-Wook
Jang Ki-Taeg
Kim Young-Jae
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Abstract
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This in vitro study compared the remineralization of incipient interproximal caries in the presence of three glass ionomer cements (highly-filled glass ionomer cement, compomer, resin-modified glass ionomer cement) and a resin composite(control). The long-term changes in remineralization caused by each material were evaluated by microtomography. Proximal restoration was simulated by placing tooth specimens and the various glass ionomer cements in closed containers with artificial saliva at 37 {circ}C and pH 7.0 for 30 days with constant circulation Tomographic images were obtained with a micro CT scanner at 90, 180, and 270 days, and density-measuring software was used to calculate the micro-density of artificial caries lesions in the specimens. The mean density changes were compared between groups in order to evaluate the effects of remineralization. All data were analyzed using one-way ANOVA and the post-HOC Tukey multiple comparison test at p<0.05. While the density of artificial caries lesions increased for all treatments, the increases for the three glass ionomer groups were significantly higher than that for the resin group in each three month period. As time went on, the amount of density increase of the glass ionomer groups decreased, and significant differences were found between the remineralization effects of the glass ionomer groups.
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KEYWORD
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Glass ionomer cement, Remineralization, Proximal caries, Micro- Computerized Tomography
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