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, 11 (7), e630-e635

Effects of Treatment With Three Types of Varnish Remineralizing Agents on the Microhardness of Demineralized Enamel Surface


Effects of Treatment With Three Types of Varnish Remineralizing Agents on the Microhardness of Demineralized Enamel Surface

Fahimeh Kooshki et al. J Clin Exp Dent.


Background: Remineralization of incipient caries is one of the goals in dental health care ,especially in pediatric dentistry. The present study aimed at comparing the effects of MI varnish (3M (United states)) , Nano paste( FGM(Brezil) ), 5% sodium fluoride varnish) DuraphatColgate (united states) ) on remineralization of enamel lesions.

Material and methods: In this in-vitrostudy, 60 intact human pre-molars, were randomly allocated to four groups of 15. Baseline surface microhardness in three points in the center of the polished area was measured. After two days of immersion in demineralizing solution, microhardness of all samples was measured. Afterward, groups 1-3 under-went treatment with MI varnish, nano paste, 5% sodium fluoride varnish and then again microhardness was measured. The results were analyzed by one-way analysis of variance (ANOVA), repeated measures ANOVA, and Bonfreni table was used.

Results: Duraphat varnish in comparison with control group, significantly increased surface microhardness and in comparison with Nano and MI paste varnish groups significant differences was shown between groups. (P< 0.05). MI paste varnish and Nano paste similary showed more increases in surface microhardness in comparison with Duraphat varnish and control groups (P≈1).

Conclusions: According to the results of this study, all three varnishes, Duraphat , MI paste and Nano paste increase the enamel surface microhardness and remineralization of incipient caries. MI paste and Nano paste compared to Duraphat Varnish, significantly showed more increases in enamel surface microhardness but Nano paste and MI paste were almost the same. Key words:CPP-ACP, Nano varnish, fluoride varnish, microhardness, demineralization, remineralization.

Conflict of interest statement

Conflict of interest statement:The authors declare that they have no conflict of interest.


Figure 1
Figure 1
Vickers Hardness Testing Machine (INNOVA TEST, Netherlands).
Figure 2
Figure 2
CONSORT Flow Diagram.

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