During the last three decades a significant worldwide reduction – of dental caries has been observed. Experts agree that fluoride in its multiple presentations has played an important role, together with changes in oral hygiene habits among different populations. Fluoride toothpastes has gained interest as a relevant strategy in prevention because of its important role in dental caries reduction, that can reach up to 40% (7,8,14). However, at the same time, they have contributed to an increase in the prevalence of dental fluorosis in children. There is concern about dental fluorosis related to the chronic intake of excessive quantities of fluoride in children under 6 years of age. Some authors have reported that the early use of fluoridated toothpastes in young children is a very important risk factor (13,17,22,33,34). Beside fluoride concentration, the duration and age of exposure are important factors in fluorosis prevalence (2).