5Takatsuka T, Tanaka K, Iijima Y. Inhibition of dentine demineraliza- t/on by zinc oxide: in vitro and in situ studies [J]. Dent Mater, 2005, 21(12) : 1170 -1177.
6Churchley D, Newby CS, Lynch RJM, et al. Protection against enam- el demineralization using sodium fluoride toothpastes containing zinc chloride[J]. Int Dent J, 2011, 16:55-59.
7Lynch RJ, Churchley D, Butler A, et al. Effect of zinc and fluoride on the remineralization of artificial carious lesions under simulated plaque fluid conditions [J]. Caries Res, 2011, 45(3) : 313 -322.
8Sreenivasan PK, Furgang D, Markowitz K, et al. Clinical anti - mi- crobial efficacy of a new zinc citrate dentifrice [ J]. Clin Oral Inves- tig, 2009, 13(2) : 195 -202.
9Osorio R, Yamauti M, Osorio E, et al. Zinc reduces collagen degra- dation in demineralized human dentin explants [ J]. J Dent, 2011, 39(2) : 148 -153.
10Silverstone LM, Wefel JS, Zimmerman BF, et al. Remineralization of natural and artificial lesions in human dental enamel in vitro. Effect of calcium concentration of the calcifying fluid[J].Caries Res, 1981, 15(2) : 138 -157.