Journal of Research in Medical Sciences (Sep 2000)

DENTAL CARIES AND FLOUROSIS IN DIFFERENT LEVELS OF DRINKING WATER FLOURIDE

  • H KHADEMI,
  • M TALEB

Journal volume & issue
Vol. 5, no. 3

Abstract

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Introduction. In some area of our country for example: Bushehre, some parts of Hormozgan, Yazd, Azarbayjan provinces, the levels of fIouride in drinking water is over optimom level. So because of this reason the incidence of flourosis in these areas is high. Determination of dental flourosis in four areas of Najafabad, Filor, Joozdan and Rahmatabad with different levels of flourosis with DMFT index is the aim of this study. Methods. This study is a cross sectional study. Samples have been selected by simple accidental manner. 254 school children aged 7-12 years old in four different areas have been examined which all of them have been lived in same areas from birth so far. To collect the necessary information, a checklist was prepared. It was contained demographic information, the intensity of flourosis of Dean classification, DMFT index on base on WHO. Results. The levels of drinking water fluoride of four areas determined which 0.23ppm Najafabad, 0.6ppm Joozdan, 1.35ppm Rahmatabad and 0.78ppm Filor. Also the intensity of flourosis on base of Dean classification have been: 15.5 percent normal sitution, 23.2 percent questionable, 31.1 percent very mild, 19.3 percent mild. 6.7 percent moderate, 4.7 percent severe. DMFT index have been 6.6 in Najafabad, 3.37 in Filor, 5.51 in Joozdan and 3.13 in Rahmatabad. Increasing of dental flourosis in persons who using drinking water observed. There was direct relationship between the drinking water containing flouride and incidence of flourosis. The relationship between of average DMF and fluoride in drinking water of Filor and Rahmatabad with Najafabad and Joozdan showes significant differences. Discussion. The results shows that flourosis observe in four areas. The mean of DMF with different levels of fluoride in drinking water are different. Most of necessary fluoride for body could be earned by drinking water, so low lavel incidence of DMF in school children in areas with high fluoride had showed.

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