| 摘要 |
One aspect of the invention concerns a molar implant ( 24 ). The implant has a body with a coronal end ( 26 ) into which a threaded bore ( 60 ) extends to receive a fastener for a prosthesis. There is an externally threaded shank ( 34 ) extending apically from the outer end, at least a portion of the shank being inwardly tapered. The coronal end has a diameter of at least 7 mm and the shank has a taper angle in the range 10° to 25°. Another aspect of the invention concerns a surgical method in which a molar tooth ( 12 ) is extracted from a maxilla or mandible and a hole ( 22 ) is formed in the bone ( 10 ) of the maxilla or mandible at a generally central position relative to the sockets ( 16 ) left by the extracted molar tooth. This hole typically has a diameter greater than the lateral dimensions of the sockets. It is then possible to screw into the hole an implant ( 24 ) as described above. |
