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Few studies and epidemiological surveys are carried out in populations geographically and culturally isolated, such as rural and riverine communities. Riverine populations represent one of the typical populations of the Amazon region. This study aimed to evaluate the impact of dental caries and periodontal disease on the quality of life of adolescents and young adults from an urban area and from two riverine communities of the Amazon region located at different distances from the urban area. The occurrence of dental caries and periodontal disease was examined through the Decayed, Missing, Filled (DMFT) Index and the Community Periodontal Index (CPI). The impact of oral health conditions on quality of life was examined through the Oral Health Impact Profile (OHIP-14) questionnaire. The data were collected from 564 individuals (15–25 years old): 212 residents of the urban area of Abaetetuba-Pará-Brazil, were compared to 186 inhabitants of the nearest riverine community (Maracapucu) and 166 of another riverine community (Tucumanduba River) located further from the city. The OHIP-14 was analyzed as a dependent outcome, while dental caries, bleeding, calculus, the presence of periodontal pockets, as well as sex and age were analyzed as independent variables through Poisson analysis in a multilevel model. The worst indicators of OHIP-14 and the highest DMFT scores were found in the riverine populations, especially those from the riverine community farthest from the urban area. Based on the adjusted multivariate model, variables such as the contextual variable (location, RR 1.31), and individual demographic variables (sex and age), DMFT (RR 1.53), and the presence of periodontal pockets (RR 1.15) were significantly related to the OHIP (p<0.001). Our results confirm that dental caries and periodontal disease negatively impact oral health-related quality of life; however, these diseases seem to impact the individuals from remote communities more significantly.

The impact of oral health on quality of life of urban and riverine populations of the Amazon: A multilevel analysis