Material and Method: A cross-sectional, descriptive and analytical study was carried out. The sample consisted of 125 students aged 13 to 15, enrolled at Khar Ndoffène Diouf College in Fatick. Dental fluorosis was measured clinically using the Dean index. The Child-OIDP questionnaire was used to assess the effect of fluorosis on quality of life. The data were analyzed with the SPSS 20.0 software using Chi2, Sperman tests with a significance threshold set at p<0.05.

Results: Dental fluorosis was noted in more than 80% of students. It was more frequent in moderate and severe forms. No significant relationship was found between fluorosis and socio-demographic data. In contrast, dental fluorosis significantly affected performance "performing school activities" (p=0.03).

Conclusion: The prevalence of dental fluorosis was high. However, the latter did not have much impact on the quality of life.