Background and Objectives: Fluoride concentration of 0.5 to 1.5 mg/l in drinking water has a positive effect on prevention or reduction of teeth decay. Today, fluoride needed to prevent teeth decay is primarily provided from drinking water. The aim of this study was to survey the amount of fluoride in drinking water in rural areas of Rafsanjan and its comparison with National and World Health Organization standards.

Materials and Methods: This cross-sectional study was conducted in 2015 in rural areas of  Rafsanjan. The samples were collected from 8 resources in the rural areas of Rafsanjan in the spring and summer through using census method  (Each season had 8 samples of one liter volume). Samples were kept in polyethylene plastic containers. SPADNS (Sodium2- (Parasulfophenylazo) _ Dihydroxy_3, 6_Naphtalene Disulfonate) reagent was used to determine  the amount of fluoride in water. Data was analyzed using descriptive statistics (mean ± standard deviation) and paired sample t_test and the significant level   was considered as P<0.05   .

• The highest amounts of fluoride in the spring (1.13mg/l) and summer (1.15mg/l) were related to the Ahmadabad Dafeh tank and the minimum amounts of fluoride in the spring (0.30 mg/l) and summer (0.48 mg/l) were releated to the Kabootarkhan tank. The average amounts of fluoride in drinking water in villages in the spring and summer were 0.71 ± 0.24 mg per liter and 0.78 ± 0.21 mg per liter,respectively; which had  a statistically significant difference (p = 0.049 ).
• : The total amounts of fluoride in drinking water in the rural areas of Rafsanjan (except Kabotarkhan tank) were in the range of WHO and the National standards for drinking water, and it isn’t necessary to add fluoride  to water.

Key words: Drinking water, Fluoride, Rural areas, Rafsanjan

Funding: This research was funded personality.

Conflict of interest: Non declared.

Ethical approval: The Ethical committe of Rafsanjan University of Medical Sciences  approved the study.

How to cite this article: Salarimoghaddam A, Zahedi L, Navabi N. Traumatic Bone Cyst in Mandibular Symphysis in a 14-year old Girl; A Case Report. J Rafsanjan Univ Med Sci 2016; 15(7): 675-82. [Farsi]