Effect of Artificial Saliva on the Apatite Structure of Eroded Enamel

  • Wang X
  • Mihailova B
  • Klocke A
  • et al.
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Abstract

Citric acid-induced changes in the structure of the mineral component of enamel stored in artificial saliva were studied by attenuated total reflectance infrared spectroscopy as well as complementary electron probe microanalysis and scanning electron microscopy. The results indicate that the application of artificial saliva for several hours (the minimum time period proved is 4 h) leads to slight, partial recovering of the local structure of eroded enamel apatite. However, artificial saliva surrounding cannot stop the process of loosening and breaking of P–O–Ca atomic linkages in enamel subjected to multiple citric acid treatments. Irreversible changes in the atomic bonding within 700 nm thick enamel surface layer are observed after three times exposure for 1 min to aqueous solution of citric acid having a pH value of 2.23, with a 24-hour interval between the individual treatments. The additional treatment with basic fluoride-containing solutions (1.0% NaF) did not demonstrate a protective effect on the enamel apatite structure per se.

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Wang, X., Mihailova, B., Klocke, A., Heidrich, S., & Bismayer, U. (2011). Effect of Artificial Saliva on the Apatite Structure of Eroded Enamel. International Journal of Spectroscopy, 2011, 1–9. https://doi.org/10.1155/2011/236496

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