Device for connecting a dental implant to a conical secondary element

• US 5,882,200 A
• Filed: 09/16/1997
• Issued: 03/16/1999
• Est. Priority Date: 03/20/1995
• Status: Expired due to Term

• Current Assignee: Straumann Holding AG
• Original Assignee: Institut Straumann AG (Straumann Holding AG)
• Inventors: Sutter, Fran.cedilla.is J., Sutter, Franz
• Primary Examiner(s): Lucchesi, Nicholas D.
• Application Number:
  US08/913,537
• Time in Patent Office: 546 Days
• Field of Search: 433/172, 433/173, 433/174
• US Class Current: 433/173
• CPC Class Codes: A61C 8/0001 Impression means for implants, e.g. impression coping
• CPC Class Codes: A61C 8/005 Connecting devices for joining an upper structure with an implant member, e.g. spacers
• CPC Class Codes: A61C 8/0069 tapered or conical connection

Abstract

The significant inventive measure of the arrangement for connecting an implant (1) to the conical secondary part (800) consists in the fact that a radially encircling shoulder part (860) is provided on the conical pillar (830), which shoulder part bears, in the form of an circular ring and partially, on the implant shoulder (14), while the remaining surface on the implant shoulder (14) is covered by the mating shoulder (301) of the impression cap (300) or the crown cap. The shoulder part (860) and the mating shoulders (301) are of complementary configuration to the implant shoulder (14). The connection arrangement can be used in particular in conjunction with a novel plug connection. Further advantages consist in the higher precision in dentistry work which can be achieved without any increased production outlay.

Claims

1. A connection arrangement for connecting an implant to a conical secondary part, comprising:

an implant having an implant head, which ends in an implant shoulder, and a base pillar support, with an axial blind-bore-like threaded bore;

a conical secondary part, including a threaded segment which engages said threaded bore, a base pillar which rests in said base pillar support, and a conical pillar which protrudes beyond said implant shoulder, said conical pillar being provided with a groove on an underside thereof, forming a shoulder part with an annular face of a configuration complementary to said implant shoulder such that said conical pillar rests on a portion of said implant shoulder beginning on an inner edge thereof; and

a cap having a circular-ring-like mating shoulder of a configuration complementary to said implant shoulder such that said cap rests on a portion of said implant shoulder beginning at an outer edge of said conical secondary part.

2. A connection arrangement according to claim 1, wherein said implant is a dental implant and said base pillar support is a hollow implant cone.

3. A connection arrangement according to claim 1, wherein said implant is a manipulation implant and said base pillar support is a cylindrical bore.

4. A connection arrangement according to claim 1, further comprising a centering sleeve which is inserted into said base pillar support, to provide additional centering to said conical secondary part.

5. A connection arrangement according to claim 1, wherein said cap is an impression cap used for taking impressions, producing a master model, and building up and fixing a finished tooth crown on said implant.

6. A connection arrangement according to claim 1, wherein said cap is a prefabricated crown cap.

7. A connection arrangement according to claim 1, wherein said cap is an individually cast metal crown.

8. A connection arrangement according to claim 1, wherein said implant shoulder and said annular face of said conical secondary part have an angle of inclination to the horizontal which is not equal to 0 degrees.

9. A connection arrangement according to claim 8, wherein said angle of inclination is 45 degrees.

10. A connection arrangement according to claim 1, wherein said conical secondary part is further provided with an axial blind-bore-like threaded bore in said conical pillar to accommodate a threaded segment of a connecting part for connecting said cap to said conical secondary part.

11. A connection arrangement according to claim 10, wherein said connecting part is a positioning screw.

12. A connection arrangement according to claim 10, wherein said connecting part is an occlusal screw.

13. A connection arrangement according to claim 10, wherein said connecting part is a plug-in anchor and said conical secondary part is further provided with a countersink to accommodate a collar of said plug-in anchor.

14. A connection arrangement according to claim 10, wherein said conical secondary part has a rotationally symmetrical configuration.

15. A connection arrangement according to claim 10, wherein said conical secondary part has an angled configuration.