Bernhart J, Bräuning A, Altenburger M J, Wrbas K T
Department of Dental Prosthetics, University Clinic for Dental Oral and Craniomandibular Sciences, Clinic of the Albert Ludwigs University Freiburg, Germany.
Int J Comput Dent. 2010;13(2):141-54.
The present clinical study evaluates the clinical prognosis of Cerec3D endocrowns over an observation period of two years. Twenty Cerec endocrowns (VITABLOCS Mark II, Vita Zahnfabirk, Bad Säckingen, Germany) were placed with PanaviaTM F 2.0, a dual-curing bonding composite. The control examinations took place semi-annually and the restorations were evaluated based on modified US Public Health Service criteria (USPHS). The two-year survival rate of the Cerec endocrowns was 90%. Two out of 20 endocrowns were assessed as failure because of fractures. The first fracture was observed after 12 months and the second fracture after 18 months. No recurrent caries was diagnosed during the entire examination period. Slight percussion symptoms were found on three restorations in the first weeks after placement. The results of the present study show that good esthetic and functional results similar to those of other restoration types can be achieved with endocrowns and that CAD/CAM-fabricated crowns represent a very promising treatment alternative for endodontically treated molars.
本临床研究评估了Cerec 3D全瓷内冠在两年观察期内的临床预后。使用双固化粘结复合材料PanaviaTM F 2.0粘结了20个Cerec全瓷内冠（VITABLOCS Mark II，德国维他齿科集团，巴特萨克京根）。每半年进行一次对照检查，并根据修改后的美国公共卫生服务标准（USPHS）对修复体进行评估。Cerec全瓷内冠的两年生存率为90%。20个全瓷内冠中有2个因骨折被评估为失败。第一次骨折在12个月后观察到，第二次骨折在18个月后观察到。在整个检查期间未诊断出复发性龋齿。在放置后的头几周，有三个修复体出现轻微叩痛症状。本研究结果表明，全瓷内冠可获得与其他修复类型相似的良好美学和功能效果，并且计算机辅助设计/计算机辅助制造（CAD/CAM）制作的全冠是根管治疗后磨牙非常有前景的治疗选择。
