Fluoride concentration and erosive potential of Brazilian concentrated natural fruit juices

  • Isabela Albuquerque Passos Farias Federal University of Paraíba
  • Dayane Franco Barros Mangueira Leite Federal University of Paraíba
  • Fábia Cunha Medeiros e Silva Federal University of Paraíba
  • Fábio Correia Sampaio Federal University of Paraíba
  • Ricardo Cavalcanti Duarte Federal University of Paraíba
Keywords: Dental enamel, diet, fruit, fluoride, pH, tooth erosion.

Abstract

Objective: To estimate the erosive potential of fruit juices consumed by a group of Brazilian children.
Methods: The study was carried out in two phases: Different fruit types were selected based on a dietary questionnaire applied to a random group of 40 patients’ mothers attending public pediatric services; the thirteen most cited fruits (acerola, orange, passion fruit, mango, cashew apple, grape, guava, soursop, pineapple, apple, lemon, tangerine and papaya) were purchased at local markets of João Pessoa, Northeast region of Brazil. The concentrated juices were prepared using a processor. The material was centrifuged for pH and fluoride measurements (in duplicate) using a pH electrode and an ion sensitive electrode, respectively. Comparisons of mean±SD were done by ANOVA and Schefé test.
Results: Acerola was the most cited fruit (n=24). The pH of the fruit juices varied from 2.21 (lemon) up to 5.52 (papaya) (p<0.01). Only papaya juice showed pH above 5.5. Fluoride concentrations varied from 0.04 (mango) up to 0.42 mg/L (lemon) (p>0.01).
Conclusions: The fluoride concentration was low for all fruits juices evaluated. Except for papaya, the majority of the concentrated fruits juices presented critical pH values indicating some erosive potential.

Author Biographies

Isabela Albuquerque Passos Farias, Federal University of Paraíba
Department of Restorative Dentistry, Federal University of Paraíba
Dayane Franco Barros Mangueira Leite, Federal University of Paraíba
Department of Restorative Dentistry, Federal University of Paraíba
Fábia Cunha Medeiros e Silva, Federal University of Paraíba
Technical School of Health, Health Sciences Center, Federal University of Paraíba
Fábio Correia Sampaio, Federal University of Paraíba
Department of Clinic and Community Dentistry, Health Sciences Center, Federal University of Paraíba
Ricardo Cavalcanti Duarte, Federal University of Paraíba
Adjunt Professor, Department of Clinic and Community Dentistry, Health Sciences Center, Federal University of Paraíba

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Published
2015-08-04
Section
Original Article