title: [Study of the effect of fluor protector on resistance to demineralization of milk beverages on enamel of primary teeth].
abstract: OBJECTIVE
  To study the effect of fluor protector against demineralization of deciduous teeth enamel surface in milk beverages, to certify the mechanism of anti-demineralization of fluor protector, and provide laboratory basis for clinical practice of fluor protector and the prevention of infants and young children.
  
  
  METHODS
  The enamel surfaces of 30 prepared deciduous teeth without caries were randomly divided into 3 groups. Group A was control group. Milk beverages were used in group B, and 0.1% fluor protector was used in group C. Each group included 10 specimens. All specimens were soaked in water tank at 37 degrees centigrade for 4 days, but specimens in groups B and C were soaked at intervals in 10mL yogurt drinks in water tank at 37 degrees centigrade, 9 minutes for one time and 3 times for one day. Scanning electron microscope (SEM) and spectrum analyzer were used to detect the changes in surface morphology of deciduous teeth enamel surface. The concentration values and the ratio of calcium/phosphorus were analyzed with SPSS11.5 software package.
  
  
  RESULTS
  Enamel soaked in milk beverages had decreased Ca(2+) and P(3+) content significantly (P<0.01). Ca(2+) and P(3+) content in enamel in group C was significantly higher than in group B (P<0.01). Scanning electron microscopy showed enamel surface in group C had mild demineralization.
  
  
  CONCLUSIONS
  Milk beverages can cause a strong acid demineralization in deciduous teeth enamel surface. The application of fluor protector in enamel surface can inhibit enamel demineralization in the milk beverages.
authors.affiliation: Department of Stomatology, Maternal and Children Health Hospital of Tangshan City. Tangshan 063000;China.E-mail:2578603536@qq.com.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Xu
authors.forename: Wen-ru
authors.initials: WR
authors.lastname: Zhang
authors.forename: He
authors.initials: H
authors.lastname: Meng
authors.forename: Lin
authors.initials: L
authors.lastname: Wang
mesh_terms: D000818:Animals; D001628:Beverages; D002648:Child; D003731:Dental Caries; D003743:Dental Enamel; D004338:Drug Combinations; D005460:Fluorides, Topical; D006801:Humans; D008892:Milk; D011140:Polyurethanes; D011897:Random Allocation; D012821:Silanes; D017001:Tooth Demineralization; D014094:Tooth, Deciduous
chemical_list: D004338:Drug Combinations; D005460:Fluorides, Topical; D011140:Polyurethanes; D012821:Silanes; C022599:Fluor Protector