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The effect of varnish fluoride on the acid resistance and the remineralization of the enamel

  • Journal of Korean society of Dental Hygiene
  • Abbr : J Korean Soc Dent Hyg
  • 2009, 9(4), pp.740-752
  • Publisher : Korean Society of Dental Hygiene
  • Research Area : Medicine and Pharmacy > Dentistry

조민정 1 심형순 1 이향님 1 김승희 1 박지일 1 김은미 1 하명옥 1

1광주보건대학교

Candidate

ABSTRACT

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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