高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 298.

• Chemistry in Materials Sciences • 上一篇    下一篇

Effects of Cerium and Combination of Fluoride and Cerium on the Hydrolysis of Hydroxyapatite and Calcium Hydrogen Phosphate

FENG Zu-De, CHEN Fei, LIN Chang-Jian   

  1. Department of Materials Science, State Key Laboratory for Physical Chemistry of the Solid Surfaces, Xiamen University, Xiamen 361005
  • 出版日期:2000-12-31 发布日期:2000-12-31

Effects of Cerium and Combination of Fluoride and Cerium on the Hydrolysis of Hydroxyapatite and Calcium Hydrogen Phosphate

FENG Zu-De, CHEN Fei, LIN Chang-Jian   

  1. Department of Materials Science, State Key Laboratory for Physical Chemistry of the Solid Surfaces, Xiamen University, Xiamen 361005
  • Online:2000-12-31 Published:2000-12-31

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摘要：

Researches have indicated that fluoride aided in decreasing the solubility of enamel of teeth and preventing caries through converting hydroxyapatite (HAP) to less dissoluble fluoroapatite (FAP). However, The toxicity of fluoride is not negligible. Recent studies[1] suggested that rare-earth elements (for instance,lanthanum, cerium, etc.) might play an important role in enamel demineralization reduction. However, the effect of these rare-earth elements on the solubility of HAP and calcium hydrogen phosphate (CaHPO4·2H2O, DCPD),which are the major inorganic compositions in enamel, remains unclear. The purpose of this paper was to investigate the characteristics of the hydrolysis of DCPD and HAP under 37℃ when hydrolyzed (a) in solutions containing cerium alone, and (b) in solutions containing fluoride followed by solutions containing cerium, respectively.

Abstract:

Researches have indicated that fluoride aided in decreasing the solubility of enamel of teeth and preventing caries through converting hydroxyapatite (HAP) to less dissoluble fluoroapatite (FAP). However, The toxicity of fluoride is not negligible. Recent studies[1] suggested that rare-earth elements (for instance,lanthanum, cerium, etc.) might play an important role in enamel demineralization reduction. However, the effect of these rare-earth elements on the solubility of HAP and calcium hydrogen phosphate (CaHPO4·2H2O, DCPD),which are the major inorganic compositions in enamel, remains unclear. The purpose of this paper was to investigate the characteristics of the hydrolysis of DCPD and HAP under 37℃ when hydrolyzed (a) in solutions containing cerium alone, and (b) in solutions containing fluoride followed by solutions containing cerium, respectively.

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