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KMID : 1022620090090040740
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Journal of Korean Academy of Dental Hygiene Education
2009 Volume.9 No. 4 p.740 ~ p.752
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The effect of varnish fluoride on the acid resistance and the remineralization of the enamel
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Cho Min-Jung
Shim Hyung-Soon
Lee Hyang-Nim
Kim Seung-Hee
Park Ji-Il
Kim Eun-Mi
Ha Myung-Ok
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Abstract
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Objectives : This study was carried out to examine the effect of varnish fluoride and APF gel on the acid resistance and the remineralization of the enamel.
Methods : At first, the microhardness changes of enamel surface were measured after demineralizing the fluoride treated tooth surface. Next, the changes were measured after fluoride application to the demineralized enamel surface.
Results :
1. Acid resistance was higher in varnish fluoride groups than APF gel groups and the difference was significant(p<0.001).
1) Varnish fluoride groups Microhardness of enamel surface showed 297.76±9.89 after fluoride treatment and 260.90±28.67
after drmineralization. The changes of Vickers hardness number(VHN) were -36.86±27.30.
2) APF gel groups Microhardness of enamel surface showed 298.79±17.28 after fluoride treatment and 43.75±18.58 after demineralization The changes of VHN were -255.04±21.31.
2. No significant changes were surveyed in both varnish fluoride groups and APF gel groups as for remineralization of enamel(p>0.05).
1) Varnish fluoride groups Microhardness of enamel surface showed 46.58±15.42 after demineralization and 46.61±15.70
after fluoride treatment. The changes of VHN were 0.02±3.75.
2) APF gel groups Microhardness of enamel surface showed 47.13±19.31 after demineralization and 42.59±16.12 after fluoride treatment. The changes of VHN were -4.54±5.06.
Conclusions : Varnish fluoride showed higher acid resistance than APF gel, however both of them were observed to have no effect on the remineralization of the enamel.
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KEYWORD
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acid resistance, fluoride varnish, remineralization
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