目前,我国老年人口高达1.67亿,由于未富先老、空巢老人日益增多等原因,大量老人进入养老机构生活[1～2]。随着年龄的增长,各种常见口腔疾病的患病率亦不断增长[3～4],而养老机构老人由于没有家庭成员照料、口腔保健知识缺乏、口腔保健行为欠缺等各种原因,进一步导致口腔卫生水 At present, China’s elderly population is as high as 167 million. Due to the increasing number of elderly people who are not rich and empty nesters, a large number of elderly people have entered the institutions for the aged care [1-2]. With age, the prevalence of various common oral diseases is also growing [3 ~ 4], and the elderly in pension institutions are further responsible for various reasons such as lack of family members’ care, lack of oral health care knowledge and lack of oral health care behaviors Oral hygiene water