Dentistry – Prosthodontics – Holding or positioning denture in mouth
Patent
1993-12-21
1995-09-12
Lucchesi, Nicholas D.
Dentistry
Prosthodontics
Holding or positioning denture in mouth
433172, 433174, A61C 800
Patent
active
054492912
ABSTRACT:
A dental implant assembly includes an implant for osseointegration in alveolar bone, an abutment removably attached to the implant for supporting a tooth prosthesis, and a screw received through an axial bore in the abutment and engaging a threaded bore in the implant. The implant includes an annular shoulder and a plurality of splines spaced from one another to define slots therebetween and disposed circumferentially about the opening of the threaded bore. The abutment includes an annular end face in engagement with the annular shoulder of the implant. A cylindrical recess is disposed radially inwardly of the annular end face and receives the splines of the implant therewithin. The cylindrical recess communicates with the axial bore. A plurality of circumferentially spaced axially extending splines defining slots therebetween are disposed within the cylindrical recess and are interleaved with the splines of the implant. The end faces of the splines of the abutment are recessed axially from the annular end face by an amount less than one half the axial length of the splines of the abutment to provide piloting of the splines of the implant in the cylindrical recess without generating ambiguous tactile feedback that would erroneously indicate full seating of the splines prior to the splines being rotated into full alignment.
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Lueschen Jeffrey D.
Story Brooks J.
Calcitek, Inc.
Lucchesi Nicholas D.
Robinson Richard L.
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