Objective To study the status of teeth loss and their restorations of the middle- aged and elders in Liaoning province. Methods Investigated the tooth losing and their restoration of middle- age（d 35- 44 years old）and elde（rs 65- 74 years old）according the method of the third national epidemiological investigation of oral health. The data was statistically analyzed by SPSS 11.0 software. Results Of all 1 584 the subjects, the sum of tooth loss were 6 776, mean tooth loss were 4.28. The rate of completion of dentition was 37.44%. There were 104 middle- aged and elders who happened deletion of dentition. There were 887 middle- aged and elders who happened defection of dentition. The tooth loss of maxillary and mandible was 3 550 and 3 226 respectively. The rate of prosthetic restoration was 52.77%. Conclusion The oral health status of middle- aged and elders should be taken very importance, especially those who lived in rural area. Dental caries and periodontal disease should be prevented so that to promote the status of middle- aged and elders oral health and to improve the quality of life.
