CAD/CAM修复体修复老年人后牙缺损的临床效果评价

目的：采用CEREC椅旁CAD/CAM系统制作修复体修复老年人后牙缺损，评价其治疗1年后的临床疗效。方法：选择48例老年后牙缺损患者，共计52颗后牙，其中嵌体18颗，高嵌体24颗，嵌体冠10颗，采用CEREC椅旁CAD/CAM系统及CEREC瓷块椅旁设计并制作嵌体、高嵌体和嵌体冠，以树脂水门汀粘接。修复后满1年进行随访，采用改良美国公众健康服务标准（USPHS）对修复体、牙体和牙周等方面及患者满意度进行评价。结果：52颗患牙修复体中，嵌体、高嵌体和嵌体冠满意率分别为94.4%、91.7%和80.0%。其中1颗嵌体发生折裂，1颗高嵌体边缘不密合，1颗修复体边缘完整性轻度缺损，1颗牙体颊舌向纵折裂，1颗嵌体冠邻接关系不密合，1颗出现牙龈乳头炎。结论：CEREC椅旁CAD/CAM技术制作的修复体短期临床效果好，是修复老年人后牙缺损的有效手段。

Evaluation on clinical effect of CAD / CAM restorations in repairing posterior tooth defects in elderly people

Objective:To repaire the posterior tooth defects in the elderly people with CEREC chairside CAD/CAM restorations,and to evaluate the clinical curative effect 1 year after treatment.Methods:A total of 52 posterior teeth from 48 aged patients were selected.Among them,24 cases were onlays,18 cases were inlays,and 10 cases were crowns.The inlays/onlays/crowns were designed and manufactured by CEREC chairside CAD/CAM system,and then bonded with resin cement.After 12 months,the patients were followed up.The teeth with restorations were assessed by using the modified USPHS criteria including restorations,tooth,and periodontal.At the same time,the patient's satisfaction was evaluated.Results:In all of the 52 restorations,the success rates of inlay,onlay and crown were 94.4％,91.7％ and 80.0％,respectively;among them,one inlay was fractured,one onlay did not close the edge,one onlay's edge integrity was mild defect,one teeth was fractured,one crown's adjacent relationship was not close,and one crown appeared papillitis.Conclusion:The restorations manufactured by CEREC chairside CAD/ CAM system have a good short-term clinical curative effect.It is an effective way to repair the posterior tooth defects in the elderly people.