[The clinical effects of tea polyphenol varnish on caries prevention]

The aim of the present research is observing the effects of tea polyphenol varnish on caries prevention.107 children were in treated group,their first deciduous molars and deciduous incisors were treated by tea polyphenol varnish twice each.Other 110 children in control group did not receive any treatment.Two doctors examined their dental caries and recorded dmft and dmfs befoe treated and one year after treatment.The results indicate that the new caries incidence of the first deciduous molars and deciduous incisors in treatment group decreased 66% than that in control group.The results show that the new caries incidence of other untreated teethin treated group is lower significantly than that in control group.The effects of tea polyphenol varnish on preventing caries were more significant in deciduous molar than in deciduous incisor.The results also indicate that the effect of varnish is stronger in occlusal surface,and less in medial and distal surfaces of teeth.