Abstract
OBJECTIVE: To investigate the influence of protective psychosocial factors on the incidence of dental pain in the last six months among 12-year-old children living in Manaus (AM). METHODS: A prospective school-based cohort study was conducted with 210 12-year-old students enrolled in public schools in the eastern zone of Manaus (AM). Students were followed up for two years. Validated questionnaires were used to assess sociodemographic characteristics, protective psychosocial factors, including sense of coherence, social support, and self-esteem at baseline and after two years. Calibrated examiners clinically assessed dental caries and gingival bleeding. Multivariate multilevel Poisson regression was used to estimate the relative risk (RR) and 95% confidence interval (95%CI) between the changes on psychosocial factors scores and incidence of dental pain, adjusted for psychosocial factors scores at baseline, dental health insurance, frequency of tooth brushing, and dental caries. RESULTS: Mean scores for sense of coherence and social support reduced significantly from baseline to 2-year follow-up. The incidence of dental pain along the two-year follow-up was 28.6%. The risk of dental pain was 14% higher for every 10 points in the mean reduction of sense of coherence score (RR = 1.14; 95%CI: 1.02-1.20), and 6% higher for every 10 points of the mean reduction in social support score (RR = 1.06; 95%CI: 1.01-1.11). Change on self-esteem was not associated with risk of dental pain. CONCLUSION: Change on sense of coherence and social support over the two-year period influenced the incidence of dental pain among children, suggesting that protective psychosocial factors, health behaviours, dental health insurance, and clinical oral condition have an important role in the incidence of dental pain.