Zheng Zheng, Ao Xiaogang, Xie Peng, Jiang Fan, Chen Wenchuan
Graduate Prosthodontics, State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Chengdu, China; Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China.
Department of Stomatology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China.
J Oral Implantol. 2020 Feb 1;46(1):51-56. doi: 10.1563/aaid-joi-D-19-00225.
In implant-supported prostheses, the most frequently reported mechanical complications after implant restoration are loosening or fracture of abutments or screws. Such complications have serious consequences, and removal of fractured abutments or screws is difficult. There are various methods to remove fractured abutment screws in implants with screwed-in connections. However, no approach has been reported to retrieve solid abutments in implants with a locking-taper implant-abutment connection, which are rarely observed in clinical settings. This study presents the case of a 62-year-old male patient with a fractured abutment in an upper-right second premolar implant. Abutment fracture is a common mechanical complication after dental implantation. Parafunctional habits and occlusal overloading may generate excessive occlusal forces, which increase the risk of mechanical complications. This report presents a series of emergency procedures for removing a fractured solid abutment and fabricating a new prosthesis to restore the edentulous area. In this retrospective analysis, the authors deeply consider the whole treatment, through which the deficiencies of the treatment are noted, and corresponding future directions are discussed. This case report presents a convenient approach to removing a solid abutment in a sudden emergency, discusses possible reasons for solid abutment fractures, designs a new rescue kit for easy retrieval of such abutments and summarizes a valid solution for removing fractured solid abutments.
在种植体支持的修复体中，种植修复后最常报告的机械并发症是基台或螺钉松动或断裂。此类并发症会产生严重后果，且取出断裂的基台或螺钉很困难。对于采用螺纹连接的种植体，有多种方法可取出断裂的基台螺钉。然而，对于临床中很少见的采用锁定锥形种植体-基台连接的种植体，尚无报道提及如何取出实心基台。本研究介绍了一例62岁男性患者右上第二前磨牙种植体基台断裂的病例。基台骨折是牙种植术后常见的机械并发症。异常功能习惯和咬合过载可能产生过大的咬合力，从而增加机械并发症的风险。本报告介绍了一系列用于取出断裂实心基台并制作新修复体以修复缺牙区的应急程序。在这项回顾性分析中，作者深入思考了整个治疗过程，指出了治疗中的不足之处，并讨论了相应的未来方向。本病例报告介绍了一种在突发紧急情况下取出实心基台的便捷方法，讨论了实心基台骨折的可能原因，设计了一种便于取出此类基台的新型救援工具包，并总结了一种取出断裂实心基台的有效解决方案。
