Relationship of Dental Caries at Different Concentrations of Fluoride in Endemic Areas: An Epidemiological Study

2010 ◽  
Vol 35 (1) ◽  
pp. 41-45 ◽  
Author(s):  
Charu Mohan Marya ◽  
Sonal Dhingra ◽  
Vandana Marya ◽  
BR Ashokkumar

Objective: Fluoride has been an effective tool to prevent dental caries but efforts have been on to establish optimal level of fluoride in drinking water in different communities. The present study seeks to establish the safe and acceptable concentration of fluoride in drinking water which would lead to maximum caries protection with least amount of clinically observable dental fluorosis. Study Design: 30 villages from 2 districts of Haryana were classified according to differing levels of fluoride in the drinking water. 3007 school children(1558 males & 1449 female)] were examined and the DMFT score was related to the level of fluoride in drinking water. Results: The caries prevalence was maximum (48.02%) in the area having 0.50 ppm fluoride in drinking water. The children from area having the 1.13 ppm fluoride level had the least caries prevalence i.e. 28.07%. Conclusion: The results of the present study did not suggest any additional anticaries benefit beyond 1.13ppm fluoride level. The present investigation showed that the optimal fluoride levels for drinking water for our conditions were near 1.13ppm (1-1.2 ppm) as there was maximum caries protection with least amount of esthetically objectionable fluorosis at that level.

2017 ◽  
Vol 4 (4) ◽  
pp. 155-159
Author(s):  
Abdulrahman Hamoud Alanazi ◽  
◽  
Fahad Abdullah Alsaab ◽  
Saud Sulaiman Alatallah ◽  
Suliman Fahad Alfahaid ◽  
...  

2008 ◽  
Vol 33 (2) ◽  
pp. 127-130 ◽  
Author(s):  
Suma R ◽  
KK Shashibhushan ◽  
ND Shashikiran ◽  
VV Subba Reddy

Background and objectives: Fluorosis is an important clinical and public health problem in several parts of the world. Although the relationship of fluoride level in drinking water to dental caries and dental fluorosis is known, relationship of fluorosis with the caries is not clear. This study was conducted to evaluate and compare the thickness of enamel and depth of lesion after inducing artificial caries in fluorotic and nonfluorotic teeth. Methods: Study group included 15 fluorosis affected and 15 normal teeth. Artificial caries was induced and teeth were sectioned to 150 microns and observed under polarized light microscope to measure the enamel thickness and depth of lesion in microns. Results: Statistical analyses of the measurements were made using student's unpaired t-test. Thickness of the enamel of nonfluorotic teeth was found to be significantly more when compared with the fluorotic teeth(p-value 0.0404) and depth of lesion was significantly more in fluorotic teeth when compared with the nonfluorotic teeth(p-value 0.0218). Conclusion:Although fluoride is acknowledged as an essential factor in the prevention of dental caries there has to be careful balance in the amount consumed to ensure that fluorosis does not occur.


Author(s):  
Nidhi Sharma ◽  
Vartika Saxena ◽  
Manisha Naithani

Background: Evidence from scientific literature confirms both beneficial and detrimental effects of fluoride on human health with only a narrow range between intakes associated with these effects. The limits of this range have been controversial among researchers since the 1930s. Considering this, the World Health Organization (WHO) permissible limit of fluoride in India has been reduced from 1.5 to 1.0 mg/l in 1998. This study aimed to evaluate the association between increasing water fluoride levels and dental caries prevention on permanent teeth.Methods: This cross-sectional study involved 1400 children (aged 6–19 years). Caries experience and dental fluorosis were recorded using DMFT/deft and Dean's index respectively. Also, fluoride concentration in drinking water was analyzed. Around 14.4% of children had dental caries with maximum frequency among 9-10 years of age. A significant negative correlation between caries experience and water fluoride level was found (p<0.05), with the lowest DMFT scores at the fluoride level of 0.61–2 mg/l and the highest at 0.0–0.3 mg/l. Whereas, high prevalence of dental fluorosis was observed above 0.7 mg/l.Results: The study revealed that the presence of 0.3-0.7 mg/l fluoride in drinking water reduces dental caries, without an objectionable rise in dental fluorosis.Conclusions: It can be suggested that fluoride has anticaries property but due to a ‘narrow therapeutic window’ of 0.3-0.7 mg/l, in a country like India where endemic fluorosis is prevalent, its topical application should be encouraged which is almost equally effective with less systemic adverse effects.


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