The average number of teeth retained in the mouth of people around 65 years old is at least 20, below which teeth are considered to be prematurely lost. According to the third national oral health epidemiology survey data show that the average number of 65-74 year olds in the country to retain 20 teeth, of which about ten percent of the people appeared to be missing teeth, mainly due to China’s older people’s knowledge of oral health care is relatively poor, physical decline, so the probability of dental caries, periodontal disease is much higher than that of young people. Therefore, the elderly around 65 years old should pay more attention to oral health care, first of all, you need to develop good oral hygiene habits, adhere to the correct way of brushing, it is best to go to the dental hospital every year for oral examination, regular scaling, to prevent the accumulation of too much calculus lead to gum recession and the formation of periodontitis, the need for early filling for cavities, to prevent too much tooth loss leads to the loosening of the problem of falling out.