title: [An experimental study on young permanent teeth enamel demineralization by different kinds of soft drinks].
abstract: OBJECTIVE
  To compare the young permanent teeth enamel demineralization after immersion in different kinds of soft drinks; to compare the degree of enamel demineralization caused by the different immersion time and frequency of beverages.
  
  
  METHODS
  The change of young permanent teeth enamel surface microhardness was measured by a leitzs microhardness tester. The change of calcium and phosphate in the different drinks after immersion of the enamel was analyzed by Roche Biochemical analyzer. Two-way ANOVA in SPSS 15.0 software package was used for statistical analysis.
  
  
  RESULTS
  The dissolution of calcium and phosphate in young permanent teeth enamel was caused by all kinds of soft drinks the surface microhardness of enamel was decreased by these drinks. There were great significant differences in the demineralization abilities among different beverages (P<0.05).The enamel demineralization was increased when prolonging the immersion time and frequency.
  
  
  CONCLUSIONS
  The enamel demineralization can be caused by orange juice and carbonic acid drinks. The enamel remineralization can be increased by tea drink, which is an ideal healthy beverage. Supported by Excellent Middle-aged Science Foundation of School of Medicine,Shanghai Jiao Tong University (Grant No.040407).
authors: Department of Dentistry, First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, China.
authors: Xiao-Yong
authors: XY
authors: Niu
authors: Xiao-Li
authors: XL
authors: Wang
authors: Chang-Yi
authors: CY
authors: Yang
mesh_terms: D002118:Calcium; D002253:Carbonated Beverages; D002681:China; D003743:Dental Enamel; D006801:Humans; D006863:Hydrogen-Ion Concentration; D014077:Tooth Erosion
chemical_list: D002118:Calcium