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US5685715: Self-indexing transfer impression coping

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Filing Information

Inventor(s) Keith D. Beaty · Curtis E. Jansen · Dan Paul Rogers ·
Assignee(s) None listed in document.
Primary Examiner Cary E. O'Connor ·
Application Number US8401801
Filing date 03/10/1995
Issue date 11/11/1997
Predicted expiration date 03/10/2015
U.S. Classifications 433/173  · 433/214  ·
International Classifications A61C 1312  ·
Kind CodeA
International Classifications 433172;173;174;175;176;214;213 ·
92 Claims, No Drawings


Abstract

A dental transfer coping for taking a dental impression of a patient's case in which information about the rotational position of an installed implant around its axis is preserved has plural impression interlocking elements arrayed on its outer surface. These elements are rotationally indexed to the ant-rotation device of the implant, and are uniformly arrayed around the coping so that the coping can be removed from the impression and reinstalled in it in many rotational positions without losing the rotational information of the implant.

Independent Claims | See all claims (92)

  1. 1. A self-indexing impression coping attachable on a common axis to a dental implant inserted into bone through an epithelial tissue layer and useful in cooperation with a resilient impression material to take an impression for making a model to produce a prosthetic tooth, said implant having first mechanical interlocking means fixed in orientation around said common axis, said self-indexing impression coping comprising:second mechanical interlocking means for engaging said first mechanical interlocking means to prevent relative rotation between said coping and said implant around said common axis when said implant and said coping are attached together, each of said first and second mechanical interlocking means having a number "n">1 individual mechanical interlocking elements arrayed symmetrically around said common axis, said second mechanical interlocking means of said coping lying substantially in a first plane that is transverse to said common axis; anda number "m" of impression interlocking elements wherein said number "m" is chosen to be "n" or "n/2", said impression interlocking elements arrayed around said common axis to engage said impression material, said impression interlocking elements lying substantially in a second plane being transverse to said common axis and being axially separated from said first plane, and each of said impression interlocking elements being circumferentially aligned around said common axis with one of said second mating mechanical elements.
  2. 13. An impression coping for cooperating with a resilient impression material to take an impression for making a model of a region in a mouth adjacent to an implant that is installed in bone, said coping comprising:a generally tubular first part having a through-passage extending therethrough along a central axis, said first part having an outer surface with a plurality of longitudinal recesses and a plurality of interlocking elements circumferentially symmetrical thereon for engaging said impression material and resisting the rotation of said generally tubular first part around said central axis when positioned within said impression material, each of said plurality of recesses separating adjacent ones of said plurality of interlocking elements; anda second part for coupling said first part to said implant, said second part having a shaft that is sized to fit in and through said through-passage with means at a first end of said shaft for restraining the movement of said first part relative to said implant and a head at the other end of said shaft for engaging said first part.
  3. 22. A dental impression coping for attachment to a root means embedded at a site within living jawbone, comprising:a body having an outer surface that is substantially symmetrical around an axis extending through said body, said body being non-rotationally attachable at a first end to said root means; anda plurality of individual impression interlocking elements being disposed circumferentially symmetric around said axis on said on its outer surface of said body, each of said plurality of individual impression interlocking elements having a curved exterior surface.
  4. 27. The combination according to clam 26 further including means to turn said wrench and said coping locked thereto around said axis.
  5. 38. A combination of a coping and a wrench, said coping comprising a body being substantially symmetrical around an axis extending therethrough, said body being attachable at a first end to another component and having an outer surface tapering inwardly toward said axis at a second end, said outer surface having a plurality of individual impression interlocking elements on said outer surface, said wrench having a bore sized to receive said body and having in said bore an individual receptor for each of said plurality of impression interlocking elements, for locking said wrench and said coping against relative rotation around said axis when said body is resident within said bore.
  6. 46. An impression coping for making a model of a site in a human mouth adjacent to a root means that is disposed within living jawbone at said site, said impression coping comprising:a body having a central axis and outer surface therearound;means for locking said body non-rotationally relative to said root means; andmeans for holding impression material non-rotationally on said outer surface, said holding means including multiple elements disposed in circumferential symmetry around said central axis, each of said multiple elements being spaced from two adjacent multiple elements by a curved surface having in a cross-sectional view an arc length that is a substantial portion of a width of said body.
  7. 57. An impression coping for making a model of a site in a human mouth adjacent to a root means that is disposed within living jawbone at said site, said impression coping comprising:a body having a central axis; anda plurality impression interlocking elements extending radially outward from said body and being circumferentially spaced from one another, each of said plurality of impression interlocking elements being defined by three adjacent longitudinal surfaces, two of said three adjacent surfaces having portions which generally extend in a radial direction with respect to said axis, the other of said three adjacent surfaces extending in generally a circumferential direction with respect to said axis, said other of said three adjacent surfaces being disposed between said two of said three adjacent surfaces.
  8. 64. An impression coping assembly for making an impression of a site in a mouth, said impression coping assembly for attaching to a root means located in jawbone at said site and having a hexagonal fitting and a threaded bore, said impression coping assembly comprising:a tubular body having a first end, a second end, and a bore extending between said first end and second end along a central axis of said tubular body, said first end being adjacent to said root means and having a hexagonal portion for engaging said hexagonal fitting of said root means, said body having an external surface including three recesses defining three external projections having curved exterior surfaces, each of said external projections being positioned at 120.degree. relative to said central axis from the other two of said external projections and being aligned with one surface of said hexagonal socket; andan elongated screw for insertion through said bore of said tubular body and attaching said body to said root means, said elongated screw having a threaded end for engaging said threaded bore and a head for engaging said tubular body.
  9. 67. A kit of dental components for use in providing a single tooth restoration at a site in living jawbone, said kit comprising:a dental implant to be inserted into said jawbone at said site, said dental implant having a fitting at one end and an internally threaded bore centered on an axis;an impression coping including a tubular body having a first end, a second end, and a bore extending between said first and second ends along a central axis of said tubular body that is substantially co-linear with said axis of said dental implant, said first end having means for engaging said fitting and holding said impression coping nonrotationally on said fitting of said dental implant, said tubular body having an external surface including a plurality of impression elements for engaging impression material and holding said impression coping non-rotationally within said impression material, said impression elements being disposed in circumferential symmetry around said axis;an elongated screw for insertion through said bore of said tubular body and attaching said body to said dental implant, said elongated screw having a threaded end for engaging said internally threaded bore of said dental implant; anda wrench for coupling to said impression coping, said wrench having a plurality of individual receptors for receiving a corresponding one of said plurality of impression elements, said wrench having means for rotating said coping around said central axis, said wrench capable of inserting said dental implant into said jawbone when said dental implant is attached to said impression coping.
  10. 74. A method of installing a dental implant into a final position at a site having a bore within living jawbone, said method comprising the steps of:providing a set of dental components including said dental implant, an impression coping being attached to said dental implant, and a wrench connected to said impression coping, said impression coping having a plurality of impression elements for engaging impression material and holding said impression coping non-rotationally within said impression material, said plurality of impression elements being disposed in circumferential symmetry around said axis, said wrench having a plurality of individual receptors for receiving a corresponding one of said plurality of impression elements;guiding said dental implant to said site and into said bore by manipulating said wrench to which said impression coping and said dental implant are connected; andusing said wrench to insert said dental implant into said final position in said bore within jawbone at said site.
  11. 77. A method of installing a dental implant into a final position at a site having a bore within living jawbone, said method comprising the steps of:providing a set of dental components including said dental implant, an impression coping attached to said dental implant, and a wrench connected to said impression coping, said impression coping having at least one impression element for engaging impression material and holding said impression coping non-rotationally within said impression material, said wrench having a receptor for receiving said at least one impression element;guiding said dental implant to said site and into said bore by manipulating said wrench to which said impression coping and said dental implant are connected; andusing said wrench to insert said dental implant into said final position within said jawbone at said site.
  12. 80. A method of taking an impression of a site in the mouth where a tooth restoration is to be positioned to replace a natural tooth, said method comprising the steps of:providing a set of dental components including a dental implant, an impression coping attached to said dental implant, and a wrench connected to said impression coping, said impression coping having at least one impression element for engaging impression material and holding said impression coping non-rotationally within said impression material, said wrench having a receptor for receiving said at least one impression element;guiding said dental implant at said site by manipulating said wrench to which said impression coping and said dental implant are connected;using said wrench to insert said dental implant into a final position within said jawbone at said site;removing said wrench from said impression coping;placing said impression material over said impression coping to create an impression of said site;removing said impression material; andremoving said impression coping.
  13. 87. A combination of a coping and a wrench, said coping comprising a body being substantially symmetrical around an axis extending therethrough, said body being attachable at a first end to another component and having an outer surface extending between said first end and a second end which is opposite said first end, said outer surface having a plurality of individual impression interlocking elements on said outer surface, said wrench having a bore being sized to receive said body, said bore including an individual receptor for each of said plurality of impression interlocking elements for locking said wrench and said coping against relative rotation around said axis when said body is resident within said bore.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US5312254 ROSENLICHT JOEL L Rosenlicht May 1994

Other Publications

Br.ang.nemark System, Product Catalog Prosthetics 1991, Nobelpharma (3 pages).
Prosthetic Catalog, 1993, Implant Innovations, Inc. (3 pages).
IMTEC Hexed-Head.TM. Implant System, IMTEC Prosthetic Components, Spring 1993 Catalog (2 pages).
Implant Support Systems, Inc., Catalog Summer 1993 (2 pages).
Interpore International, Restorative Components, Price and Data Sheet, May, 1990 (2 pages).
Prosthetic Catalog, Impression Copings, Implant Innovations, Inc. (3 pages).
IMPLA-MED The Source, IMPLA-MED Prosthetic Components (Nov. 1992) (3 pages).

Referenced By

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USD427683 Sulzer Calcitek Inc. Carl W. Pettersen Jul 2000
US5762500 Sargon Lazarof Jun 1998
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