【摘要】 目的:采用平面对接式边缘的椅旁CAD/CAM全瓷修复体修复后牙大面积缺损,分析患者的短期修复效果。方法:回顾性分析椅旁CAD/CAM全瓷修复后牙大面积缺损患者的临床资料。共计患牙107颗,修复体均为平面对接式边缘,统计修复体类型。全部患牙均采用"改良美国公众健康服务标准"进行即刻检查以及12个月后的随访检查,比较即刻检查和复诊时修复体完整性、颜色匹配性、修复体固位、牙体完整性、邻接关系和牙周组织健康的A级构成比。结果:修复体包括32个髓高嵌体和75个髓超嵌体。即刻与复诊检查时各项指标的A级构成比比较,髓高嵌体的修复体完整性由100%下降至96.88%,颜色匹配性由84.38%增加至93.75%;髓超嵌体的修复体固位由100%下降至98.67%,颜色匹配性由89.33%增加至92.00%;2类修复体的基牙完整性、邻接关系及牙周组织健康A级构成比均保持100%;修复失败患者包括1例髓超嵌体脱落和1例髓高嵌体折裂。结论:对于大面积缺损的后牙髓高嵌体和髓超嵌体修复,采用平面对接式的边缘设计短期修复效果稳定,是较为理想的修复方式。更多还原

【Abstract】 Objective:To restore the extensive posterior tooth defect with chair-side CAD/CAM allceramic restorations with edge to edge margin,and to explore the short-term clinical efficacy. Methods:The clinical data of patients with extensive defects of posterior teeth restored by chair-side CAD/CAM allceramic restoration were retrospectively analyzed. A total of 107 teeth were selected,and the prostheses were all with edge-to-edge margins. The types of prostheses were counted. All the teeth were assessed by using"the modified USPHS criteria"immediately and 12 months after operation. The proportions and relative ratios of grade A of the restorations immediately and 12 months after operation were assessed by these indicator,such as restoration integrity,color match,restoration retention,tooth integrity,proximal contact,and periodontium health. Results:There were 32 endo-onlays and 75 endo-overlays. The comparation results of the A-grade proportion of each index during the observation period immediately and12 months after operation showed that the restoration integrity of onlays was decreased from 100% to96. 88%,and the color matching of onlays was increased from 84. 38% to 93. 75%. The restoration retention of overlays was decreased from proportions of grade A of 100% to 98. 67%,and the color matching of overlays was increased from 89. 33% to 92. 00%. The tooth integrities,proximal contact,and periodontium health of two kinds of restorations all remained 100%. Among the patients who failed to repair,1 case was restoration exfoliation and 1 case was restoration fracture. Conclusion:The endo-onlays and endo-overlays with edge to edge margin show good short-term clinical efficacies in restoring extensive posterior tooth defect,which is an ideal repair method.更多还原