TOOTH-ROOT IMPLANT WITH LONG-TERM RESISTANCE TO REPETITIVE STRESSES

摘要

Tooth-implant with long-term resistance to repetitive stresses intended for a two-stage implanting technique. It is characterized in that it consists of a casing (1), provided in its inner region with a holding means (6b) on which is loosely seated a pressure plate (2a). On the pressure plate (2a) is situated an insertable superstructure support (3) which is at least partly surrounded by a plastic envelope (4). In addition, a screwed closure (5) is provided which closes off the upper part of the casing (1) in such a way that contact is ensured as a result of the shape. The superstructure support (3) is provided, in its upper region (3b) with a thread for the releasable application of a superstructure, which is not illustrated. Of special importance is the geometrical design of and material chosen for the pressure plate (2a). The parts of the casing (1) which are in direct contact with the osseous implant support can be provided with a partial or total coating of bioactive material (22). The casing can be closed in its lower region with an insertable closure element (14a). In order to implement a two-stage implanting technique, the casing (1) can, after implantation, be provided at first with a temporary casing closure, which can again be removed after the implant has taken. Next, the pressure plate (2a), superstructure support (3), screwed closure (5) and a sealing ring (25) can be inserted in or applied on to the upper part of the casing (1). Finally, the superstructure is screwed up. The implant as described in the invention can be used as a tooth-root implant or as a single pillar for anchoring dental prostheses in the form of bridges.