Fastener for releasable dental prosthesis - has rotary moulded with external thread, or peripheral grooving, rigidly fixed in secondary part bore

摘要

The removable prosthesis is ftted to a tooth-fixed primary part (11) by a rotary holder (19), sunk wholly or partly, in a prosthesis-fixed secondary part (9) so that a holder-fitted arrester engages the hole in the primary part. The holder has an externally thread or peripheral groove (23) adjusts axially in the holder between the arrest position, engaged in a recess in the primary part, and a release setting retracted into the holder. ADVANTAGE - Reliable fitting, with easy release.