| 摘要 |
An angulated spacer element adapted is at its one end for attachment to a fixture having a threaded aperture and implanted in the jaw bone, and to support a dental prosthesis at the other end. The spacer element, which is a unitary member, has a first portion with an end surface thereof permitting abutting engagement with the protruding end of the implanted fixture. The first portion also has a through bore aligned with the threaded aperture in the fixture and defining an internal ledge to enable a screw to pass through the bore, abut the ledge and threadably engage the threaded aperture in the fixture. The first portion is adapted for locking the spacer element in a selectable one of a plurality of rotational, fixed positions in relation to the protruding portion of the fixture. The unitary spacer element also includes a second portion for supporting the dental prosthesis on the spacer element, the second portion forming an acute angle with respect to the through bore of the first portion.
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