Introduction: Since 2013, the prevalence of tooth loss among adults in rural areas has not been studied in Mongolia. Therefore, our goal of the survey was to determine the level of tooth loss and denture needs among the population of Mongolia's. Materials and Methods: According to the geographical region of
Mongolia, 1638 subjects over 18 years old were examined from target provinces and their partial edentulous status and denture status were determined. Results: The prevalence of partial edentulous level in total subjects was 1478 (90.2%), and partial edentulous level was high (93.5%) in over < 45 year-olds. The incidence of Kennedy's class in both arches was 880 (36.0%), Class III was 853 (34.8%), and Class II was 675 (27.6%), respectively. Class IV was lower at 40 (1.6%) in both dental arches (P< 0.01). Evaluating denture status in people: 435 (67.8%) have acrylic dentures and 171 (26.6%) have flexible dentures. The number of subjects who needed prosthetic treatment was 861 (57.3%). Conclusion: The level and pattern of partial edentulism among adults Mongolia were high, and the level and pattern of tooth loss were significantly associated with age groups. Prosthetic needs among rural people are high, and all these findings are also being considered in oral health promotion strategies designed to reduce tooth loss in Mongolia's adults.