Multi-part, multi-positionable abutment for use with dental implants

• US 6,244,867 B1
• Filed: 11/24/1998
• Issued: 06/12/2001
• Est. Priority Date: 11/24/1998
• Status: Expired due to Term

• Current Assignee: Zimmer Dental Inc. (Zimvie Incorporated)
• Original Assignee: Sulzer Dental Incorporated
• Inventors: Niznick, Gerald A., Aravena, Ines M.
• Primary Examiner(s): Wilson, John J.
• Application Number:
  US09/198,651
• Time in Patent Office: 931 Days
• Field of Search: 433/172, 433/173
• US Class Current: 433/172
• 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 8/006 with polygonal positional means, e.g. hexagonal or octagonal
• CPC Class Codes: A61C 8/0066 with positioning means A61C8/006 takes precedence
• CPC Class Codes: A61C 8/0069 tapered or conical connection

Abstract

A multi-part abutment adapted for use with dental implants such as cylindrical-shaped endosseous dental implants having an internal opening or passage with an internal, non-circular shape at the top, either internally or externally, includes part one that engages the opening or passage in, or projection at the top, of the implant at the distal end of part one, and fits into abutment part two, at the top end of part one. Part two has at its distal end a multi-sided cavity that interdigitates with a multi-sided periphery or other connector on part one so that part two can be placed in a plurality of positions over part one. At the top end of part two is a prosthesis-engaging or prosthesis-forming projection which may be at an angle to the longitudinal axis of the implant, or lie on the longitudinal axis of the implant. Internal passages inside the two abutment parts are colinear when joined to one another in their intended configuration, permitting the use of a single fastener to join the two abutment parts to one another and to the dental implant, with part two covering part one and forming a sealed margin with the top of the implant.

Claims

1. An assembly comprising a multi-part abutment comprising part one and part two and a dental implant having an opening or passage with an internal, non-circular shape at its proximal end or with an external, non-circular projection at its proximal end, said assembly comprising:

part one having a size and shape, at its distal end, removably inserted into said opening or passage, or over said external projection, and, having at its periphery, a multi-sided eternal wall portion fitted into abutment part two in a plurality of spaced positions;

part two having a size and shape sealingly engaging the proximal end of said dental implant, and having a multi-sided cavity at its distal end, that non-rotatably engages and fits over the multi-sided external wall portion of part one, said cavity having size and shape complementary to said external wall portion, sealingly engaging said periphery in a plurality of spaced positions, whereby said part two covers the top surface and said periphery of said part one and said part two sealingly engages the proximal end of said dental implant;

said part two including a proximal portion adapted to engage or form a prosthesis; and

said part one and said part two including substantially colinear, internal passages that receive a single threaded fastener to join said part one and said part two to one another, and to the interior opening or passage in said dental implant.

2. The abutment of claim 1 wherein the top end portion lies at an angle with respect to the longitudinal axis of said abutment.

3. The abutment of claim 2 further comprising a single fastener of a size, shape and configuration adapted to join said part one and said part two to one another and to the interior opening or passage in said dental implant.

4. The abutment of claim 3 further comprising, at said distal end of said part one, a plurality of sides, said implant having the same number of sides as said distal end of said part one in said opening or passage.

5. The abutment of claim 2 further comprising, at said distal end of said part one, a plurality of sides, said implant having the same number of sides as said distal end of said part one in said opening or passage.

6. The abutment of claim 1 further comprising a single fastener of a size, shape and configuration adapted to join said part one and said part two to one another and to the interior opening or passage in said dental implant.

7. The abutment of claim 6 further comprising, at said distal end of said part one, a plurality of sides, said implant having the same number of sides as said distal end of said part one in said opening or passage.

8. The abutment of claim 1 further comprising, at said distal end of said part one, a plurality of sides, said implant having the same number of sides as said distal end in said of said part one opening or passage.

9. The abutment of claim 1 wherein said dental implant has an opening or passage with an internal, non-circular shape at its upper end, and wherein said part one has a size and shape, at its distal end, which fits into said opening or passage.

10. The abutment of claim 1 wherein said dental implant has an external, non-circular projection at its proximal end and wherein said part one has a size and shape, at its distal end, which fits over said external projection.

11. The combination of a carrier for a multi-part abutment and an assembly including an endosseous dental implant, said carrier having a size and shape suitable for placement of said abutment in the jawbone of a patient, said carrier including, at its distal end, an internal multi-sided cavity to engage a connector, and to hold said connector at an angle to the longitudinal axis of said carrier, whereby proper placement of said connector in the jawbone of a patient is feasible, said assembly comprising:

a multi-part abutment comprising part one and part two and a dental implant having an opening or passage with an internal, non-circular shape at its proximal end or with an external, non-circular projection at its proximal end, said assembly comprising;

part one having a size and shape, at its distal end, removably inserted into said opening or passage, or over said external projection, and, having at its periphery, a multi-sided external wall portion fitted into abutment part two in a plurality of spaced positions;

part two having a size and shape sealingly engaging the proximal end of said dental implant, and having a multi-sided cavity at its distal end, that non-rotatably engages and fits over the multi-sided external wall portion of part one, said cavity having size and shape complementary to said external wall portion, sealingly engaging said periphery in a plurality of spaced positions, whereby said part two covers the top surface and said periphery of said part one and said part two sealingly engages the proximal end of said dental implant;

said part two including a proximal portion adapted to engage or form a prosthesis; and

said part one and said part two including substantially colinear, internal passages that receive a single threaded fastener to join said part one and said part two to one another, and to the interior opening or passage in said dental implant.