OBJECTIVE To estimate time in days from the beginning of follow-up up to the development of dental caries in children under 30 months and to assess risk factors potentially affecting the development of the disease.METHODS The study population of the cohort study were children attending public, private, and charitable day care centers in Salvador, Northeastern Brazil, followed up for fourteen months. We used the multivariate Cox regression to estimate risk and Kaplan-Meier method to estimate the caries-free time.RESULTS Of the 495 children studied, 112 developed caries (22.6%). Mean caries-free time was 248.6 (SD = 96.2) days. The comparasion of curves by age group (> 24 months) and children attending public day care showed more caries in a shorter period (p < 0.00). The following variables were important risk factors for increased rate of caries: district of origin (HR = 1.88, 95%CI 1.27–2.77), category of day care (HR = 3.88, 95%CI 2.04–7.38), age (HR = 1.77, 95%CI 1.15–2.74), bottle-feeding before sleep time after the age of 12 months (HR = 1.62, 95%CI 1.04–2.51), presence of active white spots (HR = 2.70, 95%CI 1.07–6.80), and living in non-masonry house (HR = 1.68, 95%CI 1.02–2.76). The highest hazard ratio (HR = 4.60, 95%CI 2.80–7.42) was found for previous caries experience.CONCLUSIONS Social variables were considered as of high risk for the development of dental caries.

Objectives: to identify factors associated with the incidence of caries in early childhood.Methods

Objective: To estimate the time, in days, from the beginning of the monitoring until the occurrence of dental caries and its association with low birth weight in early childhood. Methods: This longitudinal study, dynamic cohort type with a study population of 1,109 children from public, private, and philanthropic daycares in Salvador, Bahia. The independent variables considered were sociodemographic, perinatal, and behavioral, such as the type of breastfeeding. Survival analysis was used to estimate the time for the development of caries with the Kaplan-Meier method. The Cox Regression was used on the multivariate analysis to assess the association with low birth weight (LBW). Results: Out of the total of 1,109 children, 419 developed the disease and the median time to the occurrence of caries was approximately 18 months. District of origin, type of daycare, age, skin color, maternal education, family income, living in a home with less than four rooms, breastfeeding habits, the presence of biofilm and of active white spot, and previous caries experience were identified as potential determinants of the time until the occurrence of caries. It was found a positive association between LBW and the time to the development of caries in both the not adjusted (RF = 1.21, 95 percent CI 0.88-1.65) and adjusted model (adjusted RF = 1.52, 95 percent CI 1.01-2.28). Conclusion: LBW was associated with dental caries.

O traumatismo dentário tem registrado altas prevalências tanto em crianças como em adolescentes brasileiros e o dano provocado pelo mesmo pode acarretar em perdas dentais irreparáveis. Nesse sentido, o presente estudo temo propósito de identificar a prevalência e gravidade do traumatismo dentário no município de Salvador- Bahia, em escolares de 12 e 15-19 anos de idade, matriculados em escolas de ensino fundamental e médio da rede públicado município, bem como identificar variáveis associadas à maior prevalência desta condição. Desenvolveu-se um estudo transversal, com uma amostra de 2.944 escolares da rede pública. A coleta de dados foi realizada em ambiente escolar envolvendo exame clínico e entrevista para obtenção de dados sociodemográficos, hábitos e utilização dos serviços de saúde. Foi realizada análise descritiva e multivariada através da regressão logística. A prevalência de traumatismo foi de 16,45% para os escolares de 12 anos e 14,02% paraos escolares de 15-19 anos. O gênero masculino foi o mais acometido e os escolares que se declararam negros tiveram as maiores prevalências. A fratura de esmalte foi a mais prevalente, e a unidade dentária mais acometida foi o incisivo central superior esquerdo. Foi menor a prevalência de traumanaqueles do sexo feminino (OR= 0,77; 0,62-0,94 05%IC) e maior naqueles adolescentes com atraso escolar (OR=1,38; 1,12-1,71 95%IC). Foi alta a prevalência de traumatismo neste grupo e são necessários estudos mais específicos para identificar fatores de risco relacionados ao mesmo.