Levels of natural fluoride in the public water supply of São Luís, Maranhão, Brazil

  • Suyene de Oliveira Paredes Departamento de Clínica e Odontologia Social, Universidade Federal da Paraíba
  • Fábio Correia Sampaio Departamento de Clínica e Odontologia Social, Universidade Federal da Paraíba
  • Franklin Delano Soares Forte UFPB
Keywords: Fluoride. Fluoridation. Dental Fluorosis. Dental Caries.

Abstract

Purpose: The objective of this study was to map out the residual levels of fluoride in isolated wells belonging to the municipality of São Luis, Maranhão, Brazil, during the period of August of 2009. Methods: The wells were determined according to sectors of the company responsible for the public water supply. Collection points were near these wells. The analysis of fluoride concentration was carried out in triplicate, using an ion-specific electrode for fluoride connected to a previously calibrated temperature meter. After analysis, samples were considered adequate when the fluoride concentration was within the recommended limits from 0.60 to 0.80 ppm F (criteria I) or within the stipulated range from 0.55 ppm F to 0.84 ppm F (criteria II). Results: The results show levels of residual fluoride less than 0.11 ppm in the water of isolated wells. Conclusion: It may be concluded that the population of São Luis, supplied with water from its wells, does not benefit from the method of fluoridation. The levels of residual fluoride found cannot cause dental fluorosis in its most severe forms, nor even prevent dental caries.

Author Biographies

Suyene de Oliveira Paredes, Departamento de Clínica e Odontologia Social, Universidade Federal da Paraíba
Mestre em Odontologia Preventiva e Infantil do Programa de Mestrado em odontologia da Universidade Federal da Paraíba, Rua: Morise de Miranda Gusmão, 380, João Pessoa-PB, CEP 58070-540.
Fábio Correia Sampaio, Departamento de Clínica e Odontologia Social, Universidade Federal da Paraíba
Doutor em Cariologia pela Universidade da Noruega, Professor Departamento de Clínica e Odontologia Social, Universidade Federal da Paraíba
Franklin Delano Soares Forte, UFPB
Drofessor Doutor do Departamento de Clínica e Odontologia social, Centro de Ciências da Saúde Universidade Federal da PAraíba
Published
2012-12-26
Section
Original Article