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Accuracy of the Simplified Thylstrup & Fejerskov Index in Rural Communities with Endemic Fluorosis

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  • Ana Karoline Adelário

    (Department of Community and Preventive Dentistry, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627–31270.901 sala 3304, Belo Horizonte, MG, Brazil)

  • Lívia F. Vilas-Novas

    (Department of Community and Preventive Dentistry, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627–31270.901 sala 3304, Belo Horizonte, MG, Brazil)

  • Lia S. Castilho

    (Department of Operative Dentistry, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627–31270.901, Belo Horizonte, MG, Brazil)

  • Andréa Maria D. Vargas

    (Department of Community and Preventive Dentistry, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627–31270.901 sala 3304, Belo Horizonte, MG, Brazil)

  • Efigênia F. Ferreira

    (Department of Community and Preventive Dentistry, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627–31270.901 sala 3304, Belo Horizonte, MG, Brazil)

  • Mauro Henrique N. G. Abreu

    (Department of Community and Preventive Dentistry, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627–31270.901 sala 3304, Belo Horizonte, MG, Brazil)

Abstract

The aim of the present study was to compare the values of the Thylstrup & Fejerskov Index (TF index) for the determination of the prevalence of dental fluorosis using either all teeth (gold standard) or six upper anterior teeth (simplified TF index). The sample was made up of 396 individuals aged six to 22 years from three Brazilian cities with endemic fluorosis caused by the ingestion of water with high fluoride concentration. The prevalence of dental fluorosis was evaluated by a single trained examiner with excellent intraexaminer agreement (kappa = 0.95). Intraexaminer reproducibilities were calculated at tooth level. Sensitivity, specificity, positive and negative predictive values of the simplified TF compared to gold standard were 90.6 (95%CI: 86.6 to 93.6), 100 (95%CI: 95.3 to 100), 100 (95%CI: 98.3 to 100) and 77.5 (95%CI: 69.8 to 83.5), respectively. The ROC value was 0.953 (95%CI: 0.933 to 0.973). The simplified TF index proved suitable for determining the prevalence of dental fluorosis in regions with endemic fluorosis caused by the ingestion of water with high concentrations of fluoride.

Suggested Citation

  • Ana Karoline Adelário & Lívia F. Vilas-Novas & Lia S. Castilho & Andréa Maria D. Vargas & Efigênia F. Ferreira & Mauro Henrique N. G. Abreu, 2010. "Accuracy of the Simplified Thylstrup & Fejerskov Index in Rural Communities with Endemic Fluorosis," IJERPH, MDPI, vol. 7(3), pages 1-11, March.
    • Handle: RePEc:gam:jijerp:v:7:y:2010:i:3:p:927-937:d:7381
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    References listed on IDEAS

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    1. Ene Indermitte & Astrid Saava & Enn Karro, 2009. "Exposure to High Fluoride Drinking Water and Risk of Dental Fluorosis in Estonia," IJERPH, MDPI, vol. 6(2), pages 1-12, February.
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    Cited by:

    1. Efigênia F. Ferreira & Andréa Maria D. Vargas & Lia S. Castilho & Leila Nunes M. Velásquez & Lucia M. Fantinel & Mauro Henrique N. G. Abreu, 2010. "Factors Associated to Endemic Dental Fluorosis in Brazilian Rural Communities," IJERPH, MDPI, vol. 7(8), pages 1-14, August.

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