Journal of Korean society of Dental Hygiene (한국치위생학회지)

Korean Society of Dental Hygiene (한국치위생학회)
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The effect of varnish fluoride on the acid resistance and the remineralization of the enamel

불소바니쉬가 법랑질의 내산성 및 재광화에 미치는 영향

  • Cho, Min-Jung (Dept. of Dental hygiene, Gwangju Health College University) ;
  • Shim, Hyung-Soon (Dept. of Dental hygiene, Gwangju Health College University) ;
  • Lee, Hyang-Nim (Dept. of Dental hygiene, Gwangju Health College University) ;
  • Kim, Seung-Hee (Dept. of Dental hygiene, Gwangju Health College University) ;
  • Park, Ji-Il (Dept. of Dental hygiene, Gwangju Health College University) ;
  • Kim, Eun-Mi (Dept. of Dental hygiene, Gwangju Health College University) ;
  • Ha, Myung-Ok (Dept. of Dental hygiene, Gwangju Health College University)
  • Received : 2009.09.14
  • Accepted : 2009.12.23
  • Published : 2009.12.30
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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 $297.76{\pm}9.89$ after fluoride treatment and $260.90{\pm}28.67$ after drmineralization. The changes of Vickers hardness number(VHN) were $-36.86{\pm}27.30$. 2) APF gel groups Microhardness of enamel surface showed $298.79{\pm}17.28$ after fluoride treatment and $43.75{\pm}18.58$ after demineralization The changes of VHN were $-255.04{\pm}21.31$. 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 $46.58{\pm}15.42$ after demineralization and $46.61{\pm}15.70$ after fluoride treatment. The changes of VHN were $0.02{\pm}3.75$. 2) APF gel groups Microhardness of enamel surface showed $47.13{\pm}19.31$ after demineralization and $42.59{\pm}16.12$ after fluoride treatment. The changes of VHN were $-4.54{\pm}5.06$. 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.

Keywords

References

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