Resumo (EN)
Introduction - The growing use of fluoridated substances has led, on one hand, to effective results in the reduction of cavities, which makes its use, systemically or topically, of great importance to odontology. On the other hand, it has been observed a growth in the prevalence of dental fluorosis, being the indiscriminate use of fluoridated toothpaste one explanation to the growth of this dental formation condition. Material and Methods - The goal of this dissertation was to evaluate both experimentally and through estimated data the risk of dental fluorosis in children at 3, 4, 5 and 6 years of age, who drink fluoridated water containing 0,7 ppm of fluoride ions and use fluo ridated toothpaste containing 1100 ppm of fluoride ions, deposited on three different sized toothbrushes, without any previous training. Results and Conclusions - The obtained results have led us to conclude that within the age groups studied, there is a higher risk of dental fluorosis at the age of three, as the ingestion of fluoride was smaller in older age groups, that the larger the toothbrush, the higher the amount of toothpaste consumed and that the individual and public educative actions, as far as the use of fluoridated toothpastes is concerned, must be implemented.