Dental abutment having relief grooves

Details Dental abutment having relief grooves Dental abutment having relief grooves

2005-06-28

2005-06-28

O'Connor, Cary E. (Department: 3732)

Dentistry

Prosthodontics

Holding or positioning denture in mouth

Reexamination Certificate

active

06910891

ABSTRACT:
An abutment for mounting a restoration or crown to a dental implant, exhibiting ability to retain the restoration thereon and to prevent rotation of the restoration about the abutment. The abutment has a relatively wide base and a relatively slender tapered projection. A stepped hole passes through the abutment for receiving a screw which secures the abutment to the implant. The bottom of the stepped hole is hexagonal, for cooperatively receiving a hexagonal post of the dental implant. The base of the abutment has an inclined surface. The projection of the abutment has negative taper such that it is wider away from the base than where it joins the base. The projection has a groove formed therein, which groove extends along the abutment in a path which for at least part of the circumference of the abutment is neither purely horizontal nor purely vertical.

REFERENCES:
patent: 4988298 (1991-01-01), Lazzara et al.
patent: 5658147 (1997-08-01), Phimmasone
patent: 5820374 (1998-10-01), Simmons et al.
patent: 5897320 (1999-04-01), Gittleman
patent: 6244867 (2001-06-01), Aravena et al.
patent: 2002/0090592 (2002-07-01), Riley et al.

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