| 摘要 |
An endosteal implant for a fixed dental prosthesis is disclosed. It comprises an implantable cylindrical foundation element (57) made of metal, a metal spacer sleeve (12) which can be screwed into an internally threaded blind bore (56) in the foundation element, the blind bore being open towards the dental prosthesis; the spacer sleeve is closed at the end away from the dental prosthesis, is in contact via an annular ledge (20) with the end face of the foundation element facing the dental prosthesis and, from the annular ledge towards the dental prosthesis in a cylindrical extension region (22), has the same outer diameter as the foundation element (57). The implant also has an attachment head (42) for the dental prosthesis which can be connected to the spacer sleeve (12) by an intermediate element (24) provided with elastic material such as plastic or the like, and a metal implant abutment in the form of an anchoring screw (58) which can be screwed into an internally threaded pocket bore (46) in the spacer sleeve, said pocket bore being open towards the dental prosthesis by pressing a bearing surface of the dental prosthesis which faces the intermediate element onto a supporting ledge of the intermediate element facing away from the spacer sleeve (12). The intermediate element (24) is provided with a metal-plastic device which surrounds the pocket bore of the spacer sleeve substantially concentrically; said intermediate element has an intermediate element frame which is substantially compressible along the spacer sleeve's longitudinal central axis and, when subjected to bending strain, can also undergo excursion at right angles to said axis, and which is formed from metal in one piece with the extension region and the attachment head. Cavities (36, 38, 40) in the intermediate element frame (24) are filled with the elastic material such as plastic or the like, and the pocket bore (46) of the spacer sleeve (12) is provided with the internal thread (48) only in the region of the attachment head (42). |
