背景:成人最常見口腔疾病為輔齒、牙周病，此二種問題不但會降低咀嚼能力，甚至還會影響個人的生活晶質。
研究目的:本研究之主要目的為了解中老年人之口腔保健行為、口腔健康狀況與口腔相關生活品質，進而分析彼此之間的相關性。
研究方法:採立意取樣，以有效問卷(CVI=lOO%， Cronbach'sα=.94 )對中部地區年滿40歲之社區民眾282名進行橫斷面相關調查。問卷內容包括社會人口學 變項、口腔保健行為、自覺口腔健康狀況與口腔生活品質。
結果:(1)本研究樣本共計282人，以女性、高中程度、目前有工作者為多，平均年齡為50±10歲。(2)64.6%的人一天刷二次，平均刷牙的時間為3.22分鐘， 86.3%有使用口腔清潔輔助工具，其中以牙籤使用最多， 有定期檢查的習慣僅佔12.4%0 (3) 57.0%目前有裝假牙，假牙平均顆數為6顆，平均缺牙顆數為1.78顆，平均口腔殘存的牙齒有27.87顆。(4)口腔相關生活品質平均分數�5.45分，若以細項進行排序，發現樣本在「覺得牙齒有問題」之困擾最大。(5)以複迴歸分析後發現有三個重要自變項與口腔生活品質有關，包括「自覺目前牙齒動搖的情形」、「自覺目前牙齒疼痛的情形」、與「剩餘之牙齒顆數J'此三變項可解釋口腔相關生活品質總變異量之33%。
結論:社區中老年人自覺口腔相關生活品質是良好的，但在口腔保健行為上尚有多處值得改善(如定期口腔檢查比率太低、輔助工具主要為牙籤)，故建議未來於社區推廣中老年口腔衛生教育時宜加強宣導定期檢查之重要性與適當的口腔清潔輔助工具之使用。

Background:
Dental cavities and periodontal disease are the common oral disease in adults. These problems will decrease chewing function and even to oral health related quality of life.
Aims:
Thepu中oses of this study were to understand the oral health behavior， oral health， oral health related quality of life， and analyzed the correlations of these variables with community adults.
Methods:
Cross-sectional study design was conducted， and purposive sampling was used. Two thousand and eighty two subjects were investigated about socio-demographic variables， oral health behavi( oral health and oral health related quality of life among 40 years and over in community. A valid questionnaire (CVI=100%， Cronbach'sα=.94) was used. Results: (1) There were 282 subjects in this study， most of these subjects were female， high school level， at work and the mean age was 50±10 years. (2) There were 64.6% people brushed two times/ per day. The brush mean time is 3.22 minutes， and 86.3% had the use oral cavity clean auxiliary tools. The most common auxiliar tool was toothpick. There were 12.4% had the oral periodic examination. (3) There were 57.0% had the artificial teeth， and the average number artificial teeth were 6. The mean of missing teeth number were 1.78，and mean residual tooth were 27.87. (4) The mean score of oral health related quality of life was 5.45， and the most disturbance item was “elf-consciousdiscomfort because oj my teeth， mouth， or denture" . (5) Using multiple regression analysis discovered there were thre( significant variables on oral health related quality of life， included "perceived falter condition of teeth"， "perceived teeth pain situation"， and "the number of residual tooth". These three variables explained 33% total variances of oral health on quality of life.
Conclusion:
The community adults and old person perceived well of oral health related quality of life， but there could had some improvement on oral health care behavior (likedlower regular oral examination and toothpick used). We suggest that when we will promote health education on oral leath， we will propose the importance of regular oral examination and proper auxiliary tool used or community adults and elderly in the future.