Customized dental abutments and methods of preparing or selecting the same

• US 5,989,029 A
• Filed: 10/29/1997
• Issued: 11/23/1999
• Est. Priority Date: 07/08/1997
• Status: Expired due to Term

• Current Assignee: Atlantis Components, Inc. (Astrazeneca PLC)
• Original Assignee: Atlantis Components, Inc. (Astrazeneca PLC)
• Inventors: Ziegler, Andrew, Osorio, Julian
• Primary Examiner(s): Lewis, Ralph A.
• Application Number:
  US08/960,046
• Time in Patent Office: 755 Days
• Field of Search: 433/172, 433/173, 433/174, 433/175, 433/213, 433/214, 433/223
• US Class Current: 433/173
• CPC Class Codes: A61C 13/0004 Computer-assisted sizing or machining of dental prostheses
• CPC Class Codes: A61C 8/005 Connecting devices for joining an upper structure with an implant member, e.g. spacers
• CPC Class Codes: A61C 8/006 with polygonal positional means, e.g. hexagonal or octagonal
• CPC Class Codes: A61C 8/0077 with shape following the gingival surface or the bone surface
• CPC Class Codes: G16H 20/40 relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture

Abstract

A customized dental abutment is provided which replicates a tooth being replaced. The dimensions of the abutment are determined by a computer algorithm that modifies standard tooth type models according to a series of measurements taken of the site of desired tooth replacement. Methods of the invention relate to taking a series of measurements of the site of desired tooth replacement, determining the type of tooth being replaced, and preparing or selecting a customized dental abutment based on the measurements and determination. The preparation or selection is made by modifying standard measurements for the type of tooth being replaced in conformity with the measurements taken of the site of desired tooth replacement.

Claims

1. A method of selecting a dental abutment from an inventory of dental abutments, comprising the steps of:

(a) determining a series of measurements at the site of tooth replacement for a tooth being replaced, said measurements comprising a mesial-distal angle, a facial-lingual angle, a rotational axis of a dental implant fixture implanted at a site of desired tooth replacement, a width, a facial-lingual offset, a mesial-distal offset, and a height from the gumline to the top of a dental implant fixture implanted in a patient'"'"'s mouth for the specific tooth being replaced;

(b) determining a type of tooth being replaced; and

(c) selecting an abutment based on said determinations.

2. The method of claim 1, wherein said measurements further comprise a height to the occlusal plane and a gingival profile of the tooth being replaced, and the dimensions, including the size, position, orientation and inclination, of adjacent and opposing teeth of the tooth being replaced.

3. The method of claim 1, wherein said inventory is a computer inventory.