Introdution – This work comprehends a transverse epidemical study on the oral health conditions among the native population Wai-Wai of Wakri village, located in the Indian settlement Trombetas-Mapuera, in the State of Pará. The intent was to assess one of the requests related to the concept of health, the oral health, by measuring the condition of the dental structures, aggrieved or not by dental caries as a direct or indirect result of the conditions of hygiene, diet, amount and quality of assistance and health services delivered to that population. Material and Methods – The study follows the World Health Organization (WHO) methodology for epidemical studies, using DMF, def and OHI index. A simplified caries examination chart was used for the ESC (Epidemical Survey on Caries). Results – As observed, that population is subject to developing dental caries owing to the frequent cariogenic alimentation, the lack of education about oral hygiene, and the difficulty in getting assistance from the health services delivered in the region. Conclusions – Taking the results as a guide for the planning and the demand of dental health preventive and treatment services, we must drive people’s attention to that population and the assistance concerning their health.