Efficacy of fluoride toothpaste and fluoride varnish on enamel remineralization in vitro
XU Hao-kun
YAO Bo-wen
YI Fei-zhou
WANG Sheng-chao
Abstract：AIM:To analyze the effects of fluoride toothpaste and fluoride varnish on enamel remineraliza-tion in vitro. METHODS:Enamel specimens of extracted bovine teeth were made and demineralized by 370 g/L phos-phoric acid. Specimens were randomly divided into 3 groups(n=9). The samples in group A, B and C were treated by normal saline( twice a day) , a fluoride toothpaste( twice a day) and fluoride varnish( only once) respectively. Speci-mens were incubated in artificial saliva for 2 weeks. Micro-hardness evaluation, SEM observation and image analysis were performed before and after demineralization and after 2-week-remineralization. RESULTS: Enamel hardness decreased in all groups after demineralization(P<0. 05). 2 weeks after remineralization, micro-hardness value in group A increased slightly (P>0. 05), while it increased significantly in group B and C (P<0. 05). 2 weeks after remineralization, a large amount of remineralization deposits were found on the endamal surface in group B and C, but only a few was found in Group A. After remineralization the micro-hole area in group A decreased slightly (P>0. 05), but remarkably decreased in group B and C(P<0. 05). There was no difference between group B and C (P>0. 05). CONCLUSION:Both fluoride toothpaste and fluoride varnish have positive effects on remineralizaion of enamel in vitro.
Keywords：enamelremineralizationfluoride toothpastefluoride varnish
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 534-537 )