Abstract: Oral health of elderly people is an important health issue in aging society. Using 2011 Chinese Longitudinal Healthy Longevity Survey ( CLHLS) data，this study explores relationships between older persons’oral health and three groups of factors，namely，social-economic，health behavior，and health related factors，using number of missing tooth as the representation of oral health. The study demonstrates that oral health of elderly in China is not satisfactory，and tooth loss is highly correlated with demographic factors and health behavior. While age is the most influential factor in tooth loss，oral
hygiene plays a very important role，and less frequent sugar consumption is preventive against tooth loss，regardless of gender and other social-economic status. The findings imply that change in health behavior and diet habits could play a more protective role in oral health.

Keywords: Elderly Persons, Oral Health, Health Behavior

摘要： 老年人的口腔健康是老龄化社会中的重要健康问题。文章使用2011 年“中国老年健康影响因素跟踪调查”( 简称CLHLS 调查) 数据，以老年人牙齿缺失数量代表口腔健康，应用多变量统计分析方法，揭示中国老年群体的口腔健康与社会经济、健康行为、健康状况三组因素之间的关系，并特别关注健康行为的作用。研究发现，老年人口腔健康问题较为严重，而失牙程度与人口特征和健康行为高度相关。对于男女两性和不同经济社会地位的老年人来说，年龄是失牙的最重要影响因素，良好的口腔卫生习惯和少吃糖则是预防失牙的重要保护因素。研究结果提示，改变卫生习惯和饮食习惯在促进口腔健康中的作用十分重要。

关键词: 老年人, 口腔健康, 健康行为