IP Library Granted Patent US 10,449,018
Granted Patent B2
US 10,449,018 · App. 15/064,122 · Granted Oct 22, 2019

Gingival ovate pontic and methods of using the same

Inventors: Stephen J. Chu (New York, NY); Jocelyn Huiping Tan-Chu (New York, NY)
A61C8/008A61C8/0006
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Quick Facts
Patent No.
US 10,449,018
App. No.
15/064,122
Granted
Oct 22, 2019
Kind
B2
Abstract

A pontic device for preserving soft tissue in a tooth-extraction site includes a generally curved apical end. The apical end has a first perimeter and is configured to rest in a tooth extraction socket and substantially conform to soft tissue of a tooth-extraction site immediately after a tooth has been extracted. The pontic device further includes an opposing, generally concave coronal end. The coronal end has a second perimeter that is configured to substantially correspond to and form a seal with gingival tissue surrounding the tooth-extraction site. The coronal end is configured to receive a tooth-shaped coronal pontic portion to form a final restoration.

Claims (15)

1. A two-part gingival pontic device for developing a prosthetic tooth at a tooth-extraction site, comprising:

a gingival ovate pontic portion including a coronal end having a perimeter, the perimeter having a shape that forms gingival tissue surrounding the tooth-extraction site into an anatomical shape, the gingival ovate pontic portion further including a generally curved apical portion forming a solid, uninterrupted distal end generally opposite the coronal end, the distal end being configured to removably rest in a tooth extraction socket, the apical portion being configured to substantially conform to soft tissue of the tooth-extraction site immediately after a tooth has been extracted; and

a coronal pontic portion coupled to the gingival ovate pontic portion, the coronal pontic portion providing a visible part of the prosthetic tooth, the two-part gingival pontic device being located within a multi-tooth fixed dental prosthesis and fitting within the tooth-extraction site for preserving the gingival tissue, the multi-tooth fixed dental prosthesis including the coronal pontic portion and at least one adjacent tooth-shaped portion, the at least one adjacent tooth-shaped portion including an internal surface for engaging at least one of a natural prepped tooth or an abutment coupled to a dental implant.

2. The device of claim 1 , wherein the perimeter of the coronal end inhibits bone-grafting material from exiting the tooth-extraction site.

3. The device of claim 1 , wherein the gingival ovate pontic portion includes at least one protrusion extending away from the coronal end, the coronal pontic portion fitting around the at least one protrusion.

4. The device of claim 3 , wherein the at least one protrusion includes a tooth-identifying code for indicating the tooth number for which it is intended for use.

5. The device of claim 3 , further including a securing material that is initially flowable to fit between the at least one protrusion and an opening in the coronal pontic portion, the securing material hardening to form the two-part gingival pontic device.

6. A fixed dental prosthesis for mimicking at least two natural teeth, comprising:

a plurality of interconnected tooth-shaped portions, a first one of the interconnected tooth-shaped portions being a pontic device for fitting over an extraction site where a natural tooth has been extracted, a second one of the interconnected tooth-shaped portions including an internal surface for engaging at least one of a natural prepped tooth or an abutment coupled to a dental implant;

wherein the pontic device is formed by a two-part pontic assembly comprising a gingival pontic portion and a coronal pontic portion, the gingival pontic portion including a generally curved, solid, uninterrupted dome-shaped structure having an anatomic shape for removably fitting within and preserving gingival tissue surrounding the extraction site, the coronal pontic portion being coupled to the gingival pontic portion and having a tooth shape.

7. The fixed dental prosthesis of claim 6 , wherein the gingival pontic portion includes at least one protrusion extending coronally away from the gingival pontic portion, the coronal pontic portion fitting around the least one protrusion.

8. The fixed dental prosthesis of claim 7 , further including a securing material that is initially flowable to fit between the protrusion and an opening in the coronal pontic portion, the securing material hardening to form the two-part pontic assembly.

9. The fixed dental prosthesis of claim 6 , wherein the gingival pontic portion includes a concave coronal end, the coronal end having a perimeter that is configured to substantially correspond to and form a seal with the gingival tissue surrounding the extraction site.

10. The fixed dental prosthesis of claim 9 , wherein the perimeter is asymmetrically scalloped with opposing distal and mesial peaks and opposing lingual and facial valleys between the peaks.

11. The fixed dental prosthesis of claim 6 , wherein the plurality of interconnected tooth-shaped portions includes three interconnected tooth-shaped portions, a third one of the interconnected tooth-shaped portions including an interior surface for engaging another natural prepped tooth or another abutment coupled to another dental implant, the first one of the three interconnected tooth-shaped portions being located between the second one and the third one of the three interconnected tooth-shaped portions.

Assignments (3)
SECURITY INTEREST Recorded Aug 5, 2024
From: KEYSTONE DENTAL HOLDINGS, INC.; KEYSTONE DENTAL, INC.; IMPLANT SOLUTIONS PTY LTD; PALTOP ADVANCED DENTAL SOLUTIONS LTD.
To: MIDCAP FUNDING IV TRUST
Reel/Frame 068187/0434 →
SECURITY INTEREST Recorded Aug 5, 2024
From: KEYSTONE DENTAL HOLDINGS, INC.; KEYSTONE DENTAL, INC.; IMPLANT SOLUTIONS PTY LTD; PALTOP ADVANCED DENTAL SOLUTIONS LTD.
To: MIDCAP FINANCIAL TRUST
Reel/Frame 068187/0465 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 20, 2022
From: CHU, STEPHEN J.; TAN-CHU, JOCELYN
To: KEYSTONE DENTAL, INC.
Reel/Frame 059970/0806 →
Continuity (2)
Provisional Application 62130074 · Mar 9, 2015
Related Publication 20160262854A1 · Sep 15, 2016