Proussaefs Periklis, AlHelal Abdulaziz, Taleb Abdulrahman, Kattadiyil Mathew T
1 Advanced Education Program in Prosthodontics and Implant Dentistry, Loma Linda University School of Dentistry, Loma Linda, Calif.
2 Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
J Oral Implantol. 2017 Oct;43(5):405-409. doi: 10.1563/aaid-joi-D-17-00078. Epub 2017 Jun 19.
There is controversy in the literature regarding the indicated retentive mechanism for implant-supported crowns. When adjacent implants are restored, the restoration can be screw retained, cement retained, or a combination of cement and screw retained. Adjacent implant-supported crowns can be restored as individual implant supported crowns or can be splinted. A classification system is proposed when adjacent implants are restored. The classification system describes currently available options to restore adjacent implants. Six types of prosthetic design options are proposed as Class I through Class VI. In Class I design, individual cement-retained crowns are made. In Class II, individual screw-retained crowns are fabricated. Class III involves fabrication of individual screw-retrievable/cement-retained crowns. Class IV prosthetic design involves splinted cement-retained implant crowns. Class V prosthetic design involves splinted screw-retained crowns, and Class VI involves splinted screw-retrievable/cement-retained implant supported crowns.
关于种植体支持冠的理想固位机制，文献中存在争议。当相邻种植体进行修复时，修复体可以采用螺丝固位、粘结固位或螺丝与粘结联合固位。相邻种植体支持冠可以作为单个种植体支持冠进行修复，也可以进行联冠修复。本文提出了一种相邻种植体修复时的分类系统。该分类系统描述了目前用于修复相邻种植体的各种选择。提出了六种修复设计类型，从I类到VI类。I类设计为制作单个粘结固位冠。II类为制作单个螺丝固位冠。III类涉及制作单个可取出螺丝/粘结固位冠。IV类修复设计为联冠粘结固位种植体冠。V类修复设计为联冠螺丝固位冠，VI类为联冠可取出螺丝/粘结固位种植体支持冠。
