• Isabel Bica, Madalena Cunha, Margarida Reis, José Costa, Patricia Costa, and Alexandra Bica.
• scola Superior de Saúde, Instituto Politécnico de Viseu, Viseu, Portugal. Electronic address: isabelbica@gmail.com.
• Aten Primaria. 2014 Nov 1; 46 Suppl 5: 154-9.

ObjectiveThe food intake has great influence on the oral health of adolescents, being relevant to analyze the type of food consumed by adolescents and their relationship with the DMFT index (decayed, missing and filled), the plaque index (PI) and the body mass index (BMI).DesignEpidemiological study conducted in public schools of the 3rd cycle of basic education, central Portugal.InstrumentsThe sociodemographic and dietary habits and frequency characterization was obtained through a self-administered questionnaire completed by adolescents and validated for the population under study. The DMFT index was evaluated according to WHO criteria, oral hygiene was evaluated based on the plaque index and BMI through weight and height in adolescents.ParticipantsRandom sample by clusters (schools) with 661 adolescents, 84.1% female and 15.9% male.ResultsAdolescents with mean age 13.22 years (± 1.139). The mean DMFT was 2.23 (± 2.484), the prevalence of PI was 96.4%, and ≥ 5 BMI <85. Adolescents with a higher DMFT index consume more cariogenic foods (r=0.160; P=.000). Adolescents with a higher BMI consume less cariogenic foods (r=-0.1343; P=.001). The value of t reveals that the consumption of cariogenic foods explains 1.8% of the variance of the BMI and 2.6% DMFT.ConclusionThe cariogenic foods are presented as a risk factor for dental caries. The results suggest that it is important to develop up actions for health education.Copyright © 2014 Elsevier España, S.L.U. All rights reserved.

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