No Estado do Maranhão e na cidade de São Luís, levantamentos epidemiológicos envolvendo adolescentes são escassos na literatura odontológica. A proposta deste estudo foi avaliar a prevalência de carie e associação com variáveis socioeconômica e hábitos em saúde bucal em adolescentes do município de Codó, Maranhão. The research was conducted in 2013, through an epidemiological survey with cross-sectional design. Foram examinaram-se 301 estudantes de 15 a 19 anos. The data concerning the socio-demographic characterization, habits and behaviors were collected through a questionnaire. Kappa was 0.9249 to 0.9666. The mean number of decayed teeth in total was 0.77 ±1.45, of lost teeth 0.29 ±0.70 and restored teeth 1.01 ±1.89 and of teeth with caries history was 2.08 ± 2.43. The CDC found was 2.08. About the socio demographic variables, 49.9% were female and 50.5% were male. The variables gender, family income, number of residents living in the same residence, mother and father's education did not present association with caries history (CPOd 1). Regarding oral hygiene habits and behavior, 59.1% reported brushing 03 times/day RP 95% CI