Submitted by Jadson Francisco de Jesus SILVA (jadson@uefs.br) on 2018-07-10T22:51:13Z No. of bitstreams: 1 Santos, Cristiane Brand?o.pdf: 1618648 bytes, checksum: 207f755363fb3b9a7dca89df5c0b2fbc (MD5) / Made available in DSpace on 2018-07-10T22:51:13Z (GMT). No. of bitstreams: 1 Santos, Cristiane Brand?o.pdf: 1618648 bytes, checksum: 207f755363fb3b9a7dca89df5c0b2fbc (MD5) Previous issue date: 2017-06-02 / Funda??o de Amparo ? Pesquisa do Estado da Bahia - FAPEB / Introduction: Dental fluorosis is an alteration in dental enamel mineralization, related to fluoride (F?) intake. Objectives: To investigate the impact of F? addition in toothpaste on the prevalence of dental fluorosis and to compare methods for F? determination in samples of diet and toothpaste. Methods: Two studies were developed: 1) systematic review of the literature, with meta-analysis, performed by two reviewers independently searching the four electronic databases (MEDLINE / PubMed; MEDLINE / Ovid; Bireme and Web of Science). The quality of articles eligible for Strengthening the Reporting of Observational Studies in Epidemiology (STROBE), and by the classification modified by Irani (2013); 2) a laboratory study that determined the F? concentration in the diet and dentifrice samples using two extraction methods: HMDS facilitated microdiffusion and hydrolysis in 0.01M HCl at times 30, 60 and 120 min of incubation. For analysis of the data, the one-way ANOVA test was applied. Results: 1) In the systematic review, eleven articles were eligible, and, when STROBE was applied, the number of items included ranged from 14 and 19, with an average of 16.3 and a standard deviation of 4.03; in the analysis of the classification modified by Irani (2013), two articles were classified as high quality and the rest of intermediate quality; 2) the method of extraction using 0.01M HCl, in the time 30 min, resulted in similar values to that expected by inactivation of 50% of the dentifrice?s F?. And in time 120 min resulted in similar values to HMDS facilitated microdiffusion. Conclusion: The majority of eligible articles in the systematic review found an association between the age of fluoride toothpaste use and dental fluorosis, but the prevalent severity of fluorosis was very mild, ie it does not imply dental fluorosis as a public health problem. It's the method of F? extraction using 0.01M HCl, in the experimental study, was promising to be used in evaluation of F? in dietary intake and dentifrices. / Introdu??o: Fluorose dent?ria ? uma altera??o na mineraliza??o do esmalte dental relacionada ? ingest?o de fluoreto (F?). Objetivos: Investigar o impacto da adi??o de F? aos dentifr?cios na preval?ncia de fluorose dent?ria e comparar metodologias para a determina??o da concentra??o de F? em amostras de dieta e dentifr?cio. M?todos: Dois estudos foram desenvolvidos: 1) revis?o sistem?tica da literatura, realizada por dois revisores que buscaram, de forma independente, os estudos em quatro bases de dados eletr?nicas (MEDLINE/PubMed; MEDLINE/Ovid; Bireme e Web of Science). Avaliou-se a qualidade dos artigos eleg?veis pelo Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) e pela classifica??o modificada por Irani (2013); 2) experimento laboratorial que determinou a concentra??o de F- nas amostras de dieta e dentifr?cio utilizando-se dois m?todos de extra??o: microdifus?o facilitada por HMDS e hidr?lise em HCl 0,01M com tempos 30, 60 e 120 minutos de incuba??o. Para an?lise dos dados foi aplicada o teste ANOVA um crit?rio. Resultados: 1) Na revis?o sistem?tica, onze artigos foram eleg?veis, e quando aplicado o STROBE o n?mero de itens inclu?dos variou entre 14 e 19, com m?dia de 16,3 e desvio padr?o 4,03; na an?lise da classifica??o modificada por Irani (2013), dois artigos foram classificados como de alta qualidade e o restante de qualidade intermedi?ria. 2) A t?cnica de extra??o em HCl 0,01M no tempo 30 minutos resultou em valores semelhantes ao esperado pela inativa??o de 50% do F? do dentifr?cio. E o tempo de 120 minutos resultou em resultados semelhantes ? t?cnica de microdifus?o facilitada por HMDS. Conclus?o: A maoiria dos artigos eleg?veis da revis?o sistem?tica encontraram associa??o entre idade do uso do dentifr?cio fluoretado e fluorose dental, por?m a severidade prevalente da flurose foi o grau muito leve, ou seja, n?o implica considerar fluorose dental como um problema de sa?de p?blica. E o estudo laboratorial sugere que o m?todo de extra??o de F? em HCl 0,01M ? promissor para ser utilizado em trabalhos de avalia??o da ingest?o de F? pela dieta e dentifr?cios.