| 摘要 |
An implantable tooth replacement consists of an implant (27) which can be secured in a jawbone, an abutment (9) made of a ceramic material which can be secured to the implant (27) by a securing screw (29), a tooth prosthesis, e.g. a crown or bridge, and a securing means for fixing said abutment to said tooth prosthesis. The ceramic material has a fracture toughness KIC of at least 6 MPa.m<1/2> and a flexural strength of at least 700 or 800 MPa and consists at least to the extent of 90 wt.% of zirconium oxide. |
