The fluorine ion, halogen, electronegative, supplied as a public health measure in the prevention of caries by WHO in the 20th century, its intake is through the respiratory and oral routes, its expression in the urine. The effect depends on: dose, exposure time, degree of malnutrition, general state of health. Objective. To determine the consumption practices that predispose to inadvertent exposure to fluoride and its impact on public health, in Montería - Córdoba. Descriptive crosssectional study methodology; fluorosis was measured using the Dean's Index and ICF; the data were correlated with the variables age, origin, average inadvertent consumption of the fluoride ion, food, beverages, oral hygiene item, in 235 participants. Results. The ICF was established by regions: severe ICF in the central region of the country, medium ICF in Sinú Medio, San Jorge, Sabana and Alto Sinú, by age group from 10 to 19 years old ICF average, from 10 to 14, 20 to 24 and , 25 to 29, mild ICF, the general total mild ICF. Conclusions. The average intake of fluoride ion for the consumption of mouthwash, established possible relationships with the male sex between 35 to 39 and 15 to 19 years with intake of 33.75mg / month, and 3.68mg / month, respectively, In the female sex, the risk factor was the group of 20 to 24 and 15 to 19 years with a consumption of 2.25mg / month and 1.50mg / month. The differences allow us to appreciate an apparent influence of the biological factor “sex”. Recommendations. Train the community in the components of the products that contain fluorine ion.