Monolithic support structure for use in implant-supported dental devices and methods of making the same

Patent metadata

Field	Value
Publication number	US-9649180-B2
Application number	US-201514709752-A
Country	US
Kind code	B2
Filing date	May 12, 2015
Priority date	May 12, 2015
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

A dental device is described that comprises a monolithic support structure for use in implant-supported dental restoration applications for partially or fully edentulous patients. The monolithic support structure comprises a unitary support body with one or more teeth projections projecting from the support body, and at least one support region providing a framework for integrating discrete artificial teeth adjacent the teeth projections. An implant-supported dental device is also provided that comprises the monolithic support structure, one or more artificial teeth, and a gingival region comprised of a formable material that secures artificial teeth within the framework of the monolithic support structure.

First claim

We claim:

1. A method of making a monolithic support structure for use in an implant-supported denture device comprising the steps of:
obtaining digital patient specific information of a patient's oral anatomy and implant information of an implant implanted in the patient's jaw;
forming a digital model of the patient's oral anatomy including a portion of the patient's edentulous ridge to be restored and the implant from the patient specific information;
creating a digital design for a monolithic support structure comprising,
designing a digital support structure comprising a support body having an elongated portion comprising an attachment side oriented adjacent the portion of the edentulous ridge, and a crown side that is opposite the attachment side,
aligning a plurality of digital teeth with the edentulous ridge,
merging at least a portion of the digital teeth at a cervical region with the crown side of the support body, and
forming the digital support structure wherein the crown side of the support body comprises at least one digital tooth projecting therefrom and at least one digital edentulous region adjacent at least one digital tooth,

forming digital instructions readable by an automated manufacturing machine that correspond to the digital design for the monolithic support structure; and
utilizing the digital instructions in an automated manufacturing process to make a monolithic support structure comprising, as a single, unitary body of material, a support body comprising a crown side, one or more teeth projections extending from the crown side of the support body and at least one artificial tooth support region on the crown side adjacent the teeth projections that corresponds to the digital edentulous region.

2. The method of claim 1 , wherein the automated manufacturing process comprises a milling process.

3. The method of claim 2 , comprising milling the monolithic support structure from a monolithic block of ceramic material.

4. The method of claim 1 , wherein the automated manufacturing process comprises an additive manufacturing process to make the monolithic support structure as a unitary body.

5. The method of claim 1 , wherein the digital teeth are selected from a digital tooth library.

6. The method of claim 1 , wherein the digital teeth have a size and shape of fully formed restoration teeth.

7. The method of claim 1 further comprising the step of removing one or more of the plurality of digital teeth to form the digital edentulous region.

8. A method of making a monolithic support structure that may be incorporated into an implant-supported dental device, comprising the steps of:
obtaining digital instructions, readable by an automated manufacturing machine, that correspond to a digital design of a support structure comprising teeth and apertures that is specific to a patient's oral anatomy and implant information of an implant implanted in the patient's jaw; and
utilizing the digital instructions to shape a monolithic support structure in the automated manufacturing process, wherein the monolithic support structure comprises
a support body having an elongated portion comprising an attachment side and a crown side that is opposite the attachment side,
one or more teeth projections extending from the crown side of the support body,
one or more apertures through the thickness of the monolithic support body, and
at least one region providing a framework to position a discrete artificial tooth adjacent the crown side of the support body and adjacent at least one of the teeth projections.

9. The method of claim 8 , wherein the automated manufacturing process comprises milling the monolithic support structure from a single ceramic block.

10. The method of claim 9 , wherein the ceramic block is comprises a partially sintered zirconia ceramic body and the process comprises milling the ceramic block into the monolithic support structure to a scaled factor based on a predicted size reduction upon sintering.

11. The method of claim 9 , further comprising sintering the monolithic support structure to form a sintered ceramic monolithic support structure.

12. The method of claim 11 , further comprising forming an implant-supported denture device by incorporating a plurality of discrete artificial teeth within the framework adjacent the crown side of the support body and the one or more sintered ceramic tooth projections, and forming an artificial gingival region with a formable material, holding the plurality of discrete artificial teeth within the framework, and surrounding the support body and a cervical region of the one or more sintered ceramic tooth projections with the formable material.

13. The method of claim 12 , wherein the sintered ceramic monolithic support structure comprises teeth projections consisting essentially of sintered zirconia ceramic, and the discrete artificial teeth and the artificial gingival region comprise acrylic.

14. The method of claim 8 , further comprising sintering the monolithic support structure and forming a fully sintered ceramic monolithic support structure wherein the one or more tooth projections comprise fully contoured dental restorations having crown regions with anatomical features consistent with the tooth type to be restored.

Assignees

• Glidewell James R Dental Ceramics Inc

Inventors

• Morales David
• Truong Nhung Tieu

Classifications

• A61K6/822

  comprising rare earth metal oxides · CPC title

• A61K6/802

  comprising ceramics · CPC title

• A61K6/818

  comprising zirconium oxide · CPC title

• A61C13/0022

  Blanks or green, unfinished dental restoration parts · CPC title

• A61C13/01 Primary

  Palates or other bases or supports for the artificial teeth; Making same · CPC title