J Korean Acad Conserv Dent.  2009 Jan;34(1):20-29. 10.5395/JKACD.2009.34.1.020.

The dynamic change of arttificially demineralized enamel by degree of saturation of remineralization at pH 4.3

• Yi JS
• Roh BD
• Shin SJ
• Lee Y
• Gong HK
• Lee CY

• KMID: 2176039
• DOI: http://doi.org/10.5395/JKACD.2009.34.1.020

Abstract

The purpose of this study is to observe and compare the dynamic change of artificially demineralized enamel by remineralization solutions of different degrees of saturation at pH 4.3. In this study, 30 enamel specimens were demineralized artificially by lactic acid buffered solution. Each of 10 specimens was immersed in pH 4.3 remineralization solution of three different degrees of saturation (0.22, 0.30, 0.35) for 10 days. After demineralization and remineralization, images were taken by a polarizing microscope (x 100). The density of lesion were determined from images taken after demineralization and remineralization. During remineralization process, mineral deposition and mineral loss occurred at the same time. After remineralization, total mineral amount and width of surface lesion increased in all groups. The higher degree of saturation was, the more mineral deposition occurred in surface lesion and the amount of mineral deposition was not much in subsurface lesion. Total demineralized depth increased in all groups.

Keyword

Enamel; Demineralization; Remineralization; pH; Degree of saturation; Mineral density

MeSH Terms

Dental Enamel
Hydrogen-Ion Concentration
Lactic Acid
Lactic Acid

Figure

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  Figure 1. Enamel specimen used in the experiment

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  Figure 2. Polarizing microscopic observation of demineralized enamel (Group1, × 100)

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  Figure 3. Polarizing microscopic observation of remineralized enamel (Group1, × 100)

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  Figure 4. Polarizing microscopic observation of demineralized enamel (Group 2, × 100)

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  Figure 5. Polarizing microscopic observation of remineralized enamel (Group 2, × 100)

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  Figure 6. Polarizing microscopic observation of demineralized enamel (Group 3, × 100)

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  Figure 7. Polarizing microscopic observation of remineralized enamel (Group 3, × 100)

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  Figure 8. Rate of change of surface lesion width at Group 1, 2, 3 ((width of surface lesion after remineralization / width of surface lesion before remineralization) × 100(%)). Horizontal bars represent no statistically significant differences (P > .05).

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  Figure 9. Comparison of mineral density in enamel before and after remineralization (Group 1)

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  Figure 10. Comparison of mineral density in enamel before and after remineralization (Group 2)

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  Figure 11. Comparison of mineral density in enamel before and after remineralization (Group 3)

Reference

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