嵌体部分冠修复老年人后牙大面积缺损的临床观察  

Clinical analysis on restoration of posterior residual crown with overlay crown in the elderly

作　　者：王燕一[1] 宁江海[1] 刘洪臣[1] 侯康林[1] 金悦[1] 陈颖萍[1] 

机构地区：[1]解放军总医院口腔科,副主任医师副教授北京100853

出　　处：《中华老年口腔医学杂志》2004年第1期22-23,共2页Chinese Journal of Geriatric Dentistry

摘　　要：目的:分析铸造嵌体部分冠修复老年人后牙舌侧大面积缺损的临床情况和修复效果。方法:对74颗舌侧大面积缺损的老年人的上下后牙残冠,在完善口腔内科治疗的基础上,按牙体缺损的情况利用髓室、根管或钉道等不同固位形式,制作覆盖牙体面的铸造嵌体部分冠的修复。结果:经1～3年的随访观察,根据主诉与检查,67颗患牙经修复后满意,成功率90.5%,失败原因主要为制作精确度差导致的固位力差、继发龋、食物嵌塞等从而导致修复体脱落以及患牙根尖和牙龈的炎症。结论:嵌体部分冠是修复老年人后牙舌侧以及近远中大面积缺损的一种经济、美观而有效的方法,准确的牙体预备和制作,是修复体成功的重要前提。Objective: To study the characteristics of casting overlay crown in restoration of posterior residual crown in the elderly. Methods: 74 cases of posterior residue crown with lingual defect were restored with casting overlay crown using flexible retention forms, such as pulp cavity, root canal, or groove according to the types of the lesion. The defects were restored after satisfactory root canal therapy. Results: After 1～3 year follow-up, 67cases were satisfied with their restoration and the success rate is 90.5%. The main failure reasons were the drop off of overlay crown because of poor retention, food insertion or secondary caries. 3 residue crowns were extracted due to severely inflammation of apex and gum. Conclusions: Overlay crown can be used to restore geriatric posterior residual crown effectively and economically. The prosthesis is more beautiful and acceptable than metal full crown. The premise of successful restoration is good retention design and accurate fabrication.

关 键 词：老年人 嵌体冠 后牙 残冠 牙体缺损 牙体预备 

分 类 号：R783[医药卫生—口腔医学]