Composite dental abutment

• US 20020076673A1
• Filed: 10/15/2001
• Published: 06/20/2002
• Est. Priority Date: 07/30/1998
• Status: Active Grant

• Current Assignee: Ivoclar Vivadent AG
• Original Assignee: Centerpulse Orthopedics Incorporated
• Inventors: Tysowsky, George, Wagner, William R., Riley, Robert L.
• Granted Patent: US 6,497,573 B2
• Time in Patent Office: Days
• US Class Current: 433/173
• CPC Class Codes: A61C 8/005 Connecting devices for joining an upper structure with an implant member, e.g. spacers
• CPC Class Codes: A61C 8/0054 having a cylindrical implant connecting part
• CPC Class Codes: A61C 8/0059 with additional friction enhancing means
• CPC Class Codes: A61C 8/0063 with an internal sleeve
• CPC Class Codes: A61C 8/0069 tapered or conical connection

Abstract

A dental abutment having a metallic core, a shield surrounding an outer surface of the core, and a polymeric cuff surrounding the core and shield, wherein the cuff bonds to a polymeric prosthesis.

Claims

1. A dental abutment, comprising:

a core formed from metal and having a passageway extending from a top portion to a bottom portion, wherein the bottom portion is adapted to abut against a gingival end of a dental implant;

a shield extending around the core; and

a cuff formed from polymer, surrounding the core and the shield, and having a passageway concentric with the passageway of the core.

2. The abutment of claim 1 in which:

the core is formed from titanium or titanium alloys;

the cuff is formed from a polymeric material containing one or more of an acrylic polymer, a reinforced polymer, a thermosetting polymer, a photosensitive polymer, a vinylester, or an epoxy; and

the shield is formed from a mixture of mono and dimethacrylates.

3. The abutment of claim 2 in which the core has an outer surface and the shield surrounds the entire outer surface of the core.

4. The abutment of claim 2 in which the shield is activated with a light initiator.

5. The abutment of claim 1 in which the core has a grayish or metallic color, and the shield is adapted to mask the color of the core.

6. A dental restorative system, comprising:

a dental implant having a coronal end and an apical end;

an abutment having three different regions with each region formed from a different material and including;

a core region formed from metal and having a bottom portion for engaging the coronal end of the implant, a shield region formed from an opaquer and positioned around the core, and a cuff region formed from polymer and surrounding the core and shield regions; and

a prosthesis formed from polymer and bonded to the cuff region.

7. The dental system of claim 6 in which the cuff is formed from a polymeric material containing one or more of an acrylic polymer, a reinforced polymer, a thermosetting polymer, a photosensitive polymer, a vinylester, or an epoxy;

and the shield is formed from a mixture of mono and dimethacrylates.

8. The dental system of claim 6 in which the core includes an inner and outer surface;

and the shield surrounds substantially the entire outer surface.

9. A dental prosthetic system, comprising;

a dental prosthesis formed from a polymer and being shaped as a natural tooth; and

;

a dental abutment having three different sections;

a metallic core, a shield surrounding a portion of the core, and a polymeric cuff surrounding the core and the shield, wherein the cuff is integrally bonded to the prosthesis.

10. The dental prosthetic system of claim 9 in which the polymeric cuff and polymeric prosthesis are formed from substantially the same polymeric ingredients;

the core is formed from titanium or titanium alloys; and

the shield is formed from a mixture of mono and dimethacrylates.