Rangert B, Gunne J, Sullivan D Y
Department of Prosthetic Dentistry, University of Umeå, Sweden.
Int J Oral Maxillofac Implants. 1991 Summer;6(2):177-86.
Mechanical in vitro tests of the Brånemark implant disclose that the screw joint which attaches the prosthetic gold cylinder and the transmucosal abutment to the fixture forms a flexible system. This inherent flexibility seems to match well the vertical mobility of a supporting tooth connected to the implant. Calculations of vertical load distribution based on measured flexibility data demonstrate that the forces are shared almost equally between tooth and implant even without taking the flexibility of the surrounding bone or the prosthesis into account. The therapy of a single Brånemark implant connected to a natural tooth should be considered without any additional element of a flexible nature. Mechanical tests and theoretical considerations, however, indicate that the transverse mobility of the connected tooth should be limited and that the attachment of the prosthesis to the tooth should be of a rigid design to avoid gold-screw loosening.
对布兰emark种植体进行的体外力学测试表明，将修复金圆柱体和穿黏膜基台连接到种植体上的螺钉接头形成了一个灵活的系统。这种固有的灵活性似乎与连接到种植体的支持牙的垂直移动性非常匹配。基于测量的灵活性数据进行的垂直载荷分布计算表明，即使不考虑周围骨组织或修复体的灵活性，牙齿和种植体之间的力也几乎平均分担。对于连接到天然牙的单个布兰emark种植体的治疗，应在不添加任何具有柔性性质的额外元件的情况下进行考虑。然而，力学测试和理论考量表明，连接牙的横向移动性应受到限制，并且修复体与牙齿的连接应采用刚性设计，以避免金螺钉松动。
