[Effects of fluoride drop or fluoride ion infiltration in toddler period on demineralization of first permanent molar of children].

OBJECTIVE

To observe the effect of fluoride drop or fluoride ion infiltration on demineralization of the first permanent molar of children.

METHODS

45 children applied by fluoride drop over 3 years in Chengdu and 40 controls were selected. 45 children applied by fluoride ion infiltration more than 3 years in Xiamen and 40 controls were selected in this study. Demineralization of the different sites of the first permanent molar was evaluated by KaVo DIAGNOdent. The effect of FD and FII in toddler period on demineralization of the first permanent molar was evaluated.

RESULTS

Early demineralization of the first permanent molar in children without fluoride drop were more severe than that of children with fluoride drop in toddle period (P < 0.01). There was no significantly difference between demineralization of first permanent molar in children with fluoride ion infiltration and control group (P > 0.05).

CONCLUSION

Fluoride drop in toddle period can help the remineralization of newly erupted first permanent molar of children. There is no effect of fluoride ion infiltration on demineralization of newly erupted first permanent molar of children.