David B Simmons

US Patent:

41626257, Jul 31, 1979

Filed:

Jan 24, 1978

Appl. No.:

5/871810

Inventors:

David E. Simmons - New Orleans LA

International Classification:

B21D 2212

US Classification:

72 54

Abstract:

A method and apparatus for forming dental matrices and copings is disclosed. The apparatus provides a first and a second compression member, each of which is provided with a pliable surface thereon. One of the compression members has a point for the attachment of a conventionally formed tooth die thereto, upon which a sheet of conventional coping material can be placed. The compression members are attachable to a jacking apparatus which imparts relative motion to the two compression members urging them together and compressing the tooth die therebetween the sheet of coping material conforming to the shape of the tooth die itself. In the method of the present invention, the first and second compression members are placed a distance apart, and the tooth die attached to one of the compression members at its pliable surface. The sheet of coping material is then loosely attached to the tooth die, after which the first and second compression members are urged together and compressed so as to cause the pliable surface of each compression member to substantially conform to and abutt the tooth die, putting substantially uniform pressure thereon. The sheet of coping material then substantially conforms to the tooth die forming the desired coping.

US Patent:

55973035, Jan 28, 1997

Filed:

Feb 17, 1995

Appl. No.:

8/390079

Inventors:

David E. Simmons - New Orleans LA

International Classification:

A61C 1904

US Classification:

433 74

Abstract:

The invention relates to a device and method for confirming bite registration for dental implants. The device has an elongated plate having one or more openings formed at an angle to a longitudinal axis of the plate. A hollow post has an exterior wall corresponding in size and shape to the openings in the plate so as to fittingly slide through a selected plate opening. An inner aperture in the post is suitable for engaging with a portion of the dental implant that extends above the healed gumline of a patient. When the post is engaged with the implant, and the plate is placed over the post, an outer surface of the plate is oriented in a substantially parallel relationship to an occlusal plane. The post and the plate are secured together to register orientation of the dental implant in relation to the occlusal plane.