Tooth loss, prosthetic status and occluding pairs among the elderly of Guangdong, China. [in Chinese]

Abstract

:【目的】描述廣東省老年人失牙、指征失牙 (有拔牙指征的牙齒 )、義齒修復情況和咬牙合牙對 ,并分析影響失牙的因素。【方法】通過多階段整群抽樣抽取 6 5～ 74歲老年人 15 15人 ,經培訓人員進行問卷調查并按世界衛生組織標準進行臨床檢查。【結果】平均失牙數 11 9顆 ,指征失牙數 2 5顆 ,農村老人有較多指征失牙。協方差分析結果表明失牙與社會經濟因素和性別有關。無牙老年人占 4%。有義齒老年人只有 47%。僅有 49%老年人有 8對以上咬牙合牙對。【結論】廣東省老年人中約一半牙列功能低于可接受水平 ,需努力保存他們的自然牙齒. Objective To describe tooth loss, teeth indicated for extraction, dental prosthetic status, and occluding tooth pairs among the elderly residents of Guangdong Province, China and to investigate any factors affecting tooth mortality. Methods The study sample consisted of 1 515 65～74 year old subjects recruited through multi stage cluster sampling. The subjects were interviewed by trained interviewers. Clinical examination procedures and diagnostic criteria used following those recommended by World Health Organization. Results Mean number of missing teeth (MT) and teeth indicated for extraction (IMT) were found to be 11 9 and 2 5. Greater IMT were found in rural residents. ANCOVA analysis indicated that tooth loss was associated with socio economic factors and gender. 4% of the elderly were completely edentulous and 47% of the elderly were found to have dental prostheses in either jaw. Only 49% of the elderly had eight or more occluding tooth pairs. Conclusion The functions of the dentitions of around half of Guangdong elderly were not acceptable and effort should be made to reserve their natural teeth.