Objective:To estimate the remineralization of enamel of primary teeth with early caries protreated by NaF-chitosan gel.Methods:Early stage caries was created on anterior primary teeth.The samples were divided into 4 groups randomly (n =6),and treated by NaF-chitosan gel,chitosan gel,duraphat and non-treatment(the control) respectively.Then all samples were underwent a 7days pH cycle.Then samples were tested with SEM and EDS.Data were analyzed with SPSS 19.Results:The SEM data showed that chitosan gel protected the enamel surface from being mined by erosion.NaF-chitosan gel group showed more mineral crystal formation on the enamel surface.The NaF-chitosan gel group showed more Ca remineralized on the enamel surface.Conclusion:NaF-chitosan gel can increase the remineraliztion of on the anterior primary teeth with early stage caries.
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