To maintain satisfactory quality of life of the increasing number of aging population, oral health status needs to be improved especially the masticatory function. Objective: This is a preliminary report of oral health status of Wasanavej aging residents for oral health rehabilitation program planning. Methods: Forty nine permanent residents at Wasanavej Home for Aging aged 57-94 year olds were included in the study. Caries status, presence and condition of prostheses were examined and recorded. Results: The subjects consisted of 38% of males and 62% of females with the mean age at 74.7±7.5 year olds. The mean DMFT 29.3±5.4 of which consisted of 94% missing component. 36.4% of them were edentulous. The mean number of teeth present was 2.7±5.4. Half of the subjects (47%) are wearing dentures of which only 4.3% of the dentures were function well and in an acceptable condition. Conclusion: To reduce the high need of prostheses among the increasing number of aging population, oral health promotion and prevention of tooth loss program should be well planned and provided. Supported by Thammasat University King's Mobile Dental Unit.