Dental prosthetic implant

Patent 5302125 Issued on April 12, 1994. Estimated Expiration Date:

October 22, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Mastication force dampening dental jawbone implant
Patent #: 4568285
Issued on: 02/04/1986
Inventor: Chiaramonte , et al.

Enossal implant
Patent #: 4793808
Issued on: 12/27/1988
Inventor: Kirsch

Adjustable support for a prosthetic tooth and method
Patent #: 4832601
Issued on: 05/23/1989
Inventor: Linden

Oral implant
Patent #: 4854874
Issued on: 08/08/1989
Inventor: Neuwirth

Universal dental prosthesis retention system
Patent #: 4907969
Issued on: 03/13/1990
Inventor: Ward

Screw-type dental implant anchor
Patent #: 4960381
Issued on: 10/02/1990
Inventor: Niznick

Implant healing cap and holder
Patent #: 5030096
Issued on: 07/09/1991
Inventor: Hurson, et al.

Anatomical restoration dental implant system Patent #: 5073111
Issued on: 12/17/1991
Inventor: Daftary

Inventors

Application

No. 964747 filed on 10/22/1992

US Classes:

433/172, Holding or positioning denture in mouth433/173By fastening to jawbone

Examiners

Primary: Mancene, Gene
Assistant: Lucchesi, Nicholas D.

Attorney, Agent or Firm

Thomson; Richard K.

Foreign Patent References

2663836 FR 01/19/1992

International Classes

A61C 013/12
A61C 013/225
A61C 008/00

Abstract

A dental prosthetic implant which has angular rotational capability and improved locking between the implant fixture and the abutment prosthesis. The rotation and locking system includes an implant fixture with an internal spherical radius at its upper portion. A top seat with the same spherical radius is secured to the top portion of the fixture. A locking element configured as a sphere with flexible locking fingers on its lower portion and an internal cylindrical bore through its center that has a conically tapered lower portion is received between the implant fixture and the main body of the abutment. The conically tapered lower portion may taper inwardly or outwardly and is engaged by a similarly configured portion of the flexible fingers. A threaded portion of the locking screw engages in a threaded bore in the implant providing the force to bias the flexible fingers outwardly into firm engagement with a complementarily configured surface on the fixture, as well as increasing the pressure between the upper surface of the locking element and the nether surface of the top seat.