| 摘要 |
An implant is disclosed for securing a base to be anchored in a jaw bone and formed by two substantially cylindrical hollow sleeves open on both their ends, and an also hollow portion of a pin. The other portion of pin projecting beyond the base forms a column intended for supporting a denture. The outer surfaces of the sleeves are provided with grooves which are distributed over the circumference. At the side remote from the column, the grooves do not extend up to the respective end face of the sleeve, so that at these locations the grooves shallow out by end faces which are capable of transmitting axial pressures occurring in an implant inserted in a jaw. The grooves also contribute to a uniform circumferential distribution of forces which are to be transmitted in a direction transverse to the column axis. With the sleeves open also on the column side, only little bone material over growth is needed for covering the sleeves. |
