DENTAL IMPLANT ABUTMENT AND METHOD FOR MANUFACTURING SAME

• US 20140017632A1
• Filed: 02/07/2012
• Published: 01/16/2014
• Est. Priority Date: 03/28/2011
• Status: Active Application

• Current Assignee: Osstem Implant Company Limited
• Original Assignee: Osstem Implant Company Limited
• Inventors: Ryu, Jae Ho, Kim, Byung Kook, Park, Moo Young
• Granted Patent: US 10,278,795 B2
• Time in Patent Office: Days
• US Class Current: 433/173
• CPC Class Codes: A61C 13/0006 Production methods
• CPC Class Codes: A61C 13/083 Porcelain or ceramic teeth A61C13/081 takes precedence; preparations A61K6/80
• CPC Class Codes: A61C 8/0048 Connecting the upper structure to the implant, e.g. bridging bars A61C8/0028 takes precedence
• CPC Class Codes: A61C 8/005 Connecting devices for joining an upper structure with an implant member, e.g. spacers
• CPC Class Codes: A61C 8/0051 Abutment monobloc with restoration
• CPC Class Codes: A61C 8/006 with polygonal positional means, e.g. hexagonal or octagonal
• CPC Class Codes: A61K 6/802 comprising ceramics
• CPC Class Codes: A61K 6/844 Noble metals
• CPC Class Codes: A61K 6/884 comprising natural or synthetic resins

Abstract

Provided are a dental implant abutment and a method of manufacturing the same, and more particularly, a dental implant abutment which forms an outer appearance of an artificial tooth, supports a porcelain prosthesis that is formed of a porcelain, and couples to and fixedly combines with a fixture. The dental implant abutment includes: a first part having a coupling structure that corresponds to an inner structure of the fixture, so that the first part couples to the fixture; a second part that extends upward from the first part and contacts gums; and a third part extending upward from the second part, having an outer circumferential surface which includes a side surface and a top surface, with a porcelain prosthesis attached to the outer circumferential surface, and including a shape in which a concave part, inwardly recessed, is formed on the side and a horizontal cross-sectional area increases in an upward direction from the concave part.

Claims

1. A dental implant abutment, which forms an outer appearance of an artificial tooth, supports a porcelain prosthesis that is formed of porcelain, and couples to and fixedly combines with a fixture, the dental implant abutment comprising:

a first part having a coupling structure that corresponds to an inner structure of the fixture, so that the first part couples to the fixture;

a second part that extends upward from the first part and contacts gums; and

a third part extending upward from the second part, having an outer circumferential surface which comprises a side and a top surface, with the porcelain prosthesis attached to the outer circumferential surface, and comprising a shape in which a concave part, inwardly recessed, is formed in the side and a horizontal cross-sectional area increases in an upward direction from the concave part.

2. The dental implant abutment of claim 1, wherein the third part has an irregular and asymmetric outer appearance.

3. The dental implant abutment of claim 1, wherein the third part has a shape in which a horizontal cross-sectional area increases downward from the concave, and a maximum horizontal cross-sectional area of the third part, which is disposed on the concave part, is greater than a maximum horizontal cross-sectional area of the third part, which is disposed below the concave part.

4. The dental implant abutment of claim 1, wherein the maximum horizontal cross-sectional area of the third part is greater than a maximum horizontal cross-sectional area of the second part.

5. The dental implant abutment of claim 1, wherein a thickness of an outer appearance of the third part is less than a thickness of a corresponding part of an outer appearance of an artificial tooth by 0.1 mm to 3 mm.

6. The dental implant abutment of claim 1, wherein the porcelain prosthesis and the third part are directly attached to each other in a porcelain furnace by using a sintering process.

7. The dental implant abutment of claim 1, wherein the outer appearance of the third part is manufactured by using a computer-aided design (CAD) program.

8. The dental implant abutment of claim 1, wherein the first part comprises a connection part that has a cross-section in the form of one from among an octagon, a hexagon, a rectangle, and a circle.

9. The dental implant abutment of claim 1, wherein the dental implant abutment is formed of one material from among titanium (Ti), a Ti alloy, a cobalt (Co)-chrome (Cr)-molybdenum (Mo) alloy, a nickel (Ni)—

Cr alloy, a gold (Au) alloy, zirconium (Zr), aluminum (Al) oxide, and a polymer.

10. The dental implant abutment of claim 1, wherein a boundary between the second part and the third part has an irregular curved structure.

11. The dental implant abutment of claim 1, wherein a shape of the third part is formed manually by using dental wax and is obtained by using three-dimensional (3D) scanning.

12. The dental implant abutment of claim 1, wherein a shape of the third part is defined by a shape of an artificial tooth.

13. The dental implant abutment of claim 1, wherein the porcelain prosthesis is manufactured by using a method of being sintered and attached to the third part.

14. A dental implant abutment, which forms an outer appearance of an artificial tooth, supports a porcelain prosthesis that is formed of porcelain, and couples to and fixedly combines with a fixture, the dental implant abutment comprising:

a first part having a coupling structure that corresponds to an inner structure of the fixture, so that the first part couples to the fixture;

a second part that is connected to the first part and contacts gums; and

a third part extending upward from the second part, having an outer circumferential surface which comprises a side and a top surface, with a porcelain prosthesis attached to the outer circumferential surface,

wherein a thickness of an outer appearance of the third part is less than a thickness of a corresponding part of an outer appearance of an artificial tooth by 0.1 mm to 3 mm.

15. A method of manufacturing a dental implant abutment, the method comprising:

impression taking for patterning the mouth of a patient to take an impression;

model manufacturing for manufacturing a model of the patient'"'"'s mouth by using the taken impression;

image generation for creating a 3D image by scanning the model of the patient'"'"'s mouth;

artificial tooth creation for creating an outer appearance of an artificial tooth by using the generated image;

abutment designing for obtaining design information about the abutment by removing 0.1 to 3 mm of an outer appearance of the artificial tooth along an outer circumferential surface; and

abutment manufacturing for manufacturing the implant abutment by cutting and tooling a base material according to the design information about the abutment.

16. The method of claim 15, wherein the artificial tooth creation is performed by using a computer-aided design (CAD) program.

17. The method of claim 15, wherein the abutment manufacturing comprises:

transmitting the design information about the abutment to a computer-aided manufacturing (CAM) program;

creating numerical control (NC) data for tooling the abutment by using the CAM program; and

tooling the abutment based on the NC data by using a cutting machine.

18. The method of claim 15, wherein the abutment comprises an outer circumferential surface which comprises a side and a top surface, with a porcelain prosthesis attached to the outer circumferential surface, and

the abutment has a shape in which a concave part, inwardly recessed, is formed on the side and a horizontal cross-sectional area increases upward from the concave part.