CA2466078A1 - Components for improved impression making - Google Patents

Components for improved impression making Download PDF

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Publication number
CA2466078A1
CA2466078A1 CA002466078A CA2466078A CA2466078A1 CA 2466078 A1 CA2466078 A1 CA 2466078A1 CA 002466078 A CA002466078 A CA 002466078A CA 2466078 A CA2466078 A CA 2466078A CA 2466078 A1 CA2466078 A1 CA 2466078A1
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CA
Canada
Prior art keywords
abutment
region
component
angle
longitudinal axis
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002466078A
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French (fr)
Other versions
CA2466078C (en
Inventor
Kent Engstroem
Anders Halldin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Astra Tech AB
Original Assignee
Astra Tech Ab
Kent Engstroem
Anders Halldin
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Application filed by Astra Tech Ab, Kent Engstroem, Anders Halldin filed Critical Astra Tech Ab
Publication of CA2466078A1 publication Critical patent/CA2466078A1/en
Application granted granted Critical
Publication of CA2466078C publication Critical patent/CA2466078C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0001—Impression means for implants, e.g. impression coping
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0069—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/006—Connecting devices for joining an upper structure with an implant member, e.g. spacers with polygonal positional means, e.g. hexagonal or octagonal

Abstract

The invention relates to components for an improved system for pick-up impression making at a dental implantation site, comprising an abutment, an abutment replica and an impression coping. The invention also relates to a series of abutments and to a set comprising an abutment and an impression coping. The abutment is comprising an implant contacting region (2) and a component support region (3), said component support region (3) having a maximum diameter (A) and extending coronally of said maximum diameter to a coronal end (6), and being provided with a component engagement (9) being arranged for releasable engagement with said component by linear displacemen t of said dental component in relation to said abutment (1), said component engagement (9) being located at a position closer to said maximum diameter ( A) than to said coronal end (6) of said component support region (3).

Claims (69)

1. An abutment (1) for connection of a dental component to an implant, said abutment (1) comprising an implant contacting region (2) and a component support region (3), said component support region (3) having a maximum diameter (A) and extending coronally of said maximum diameter to a coronal end (6), and being provided with a component engagement (9) being arranged for releasable engagement with said component by linear displacement of said dental component in relation to said abutment (1), said component engagement (9) being located at a position closer to said maximum diameter (A) than to said coronal end (6) of said component support region (3).
2. An abutment according to claim 1, wherein said component engagement (9) is provided at a distance from said maximum diameter (A) being less than 50 %
of the distance between said maximum diameter (A) and said coronal end (6), preferably less than 35 %, most preferred less than 25 %.
3. An abutment (1) according to claim 1 or 2, wherein said component support region (3) comprises a shoulder portion (4) presenting an outer surface (7), and a post portion (5) extending coronally from said shoulder portion (4) to a coronal end (6) of the abutment and presenting an outer surface (8) forming an angle (a) less than 180° with said outer surface (7) of said shoulder portion (4).
4. An abutment (1) for connection of a dental component to an implant, comprising an implant contacting region (2) and a component support region (3), said component support region (3) having a maximum diameter (A) and comprising a shoulder portion (4) presenting an outer surface (7) and a post portion (5) extending coronally from said shoulder portion (4) to a coronal end (6) of the abutment and presenting an outer surface (8) forming an angle (.alpha.) less than 180° with said outer surface (7) of said shoulder portion (4), wherein a component engagement (9) is arranged for releasable connection of said component to said abutment (1) by linear displacement of said component in relation to said abutment (1), said component engagement (9) being provided at said post portion (5), at a position being closer to said shoulder portion (4) than to said coronal end (6) of the abutment.
5. An abutment according to claim 3 or 4, wherein said component engagement (9) is provided at a distance from said shoulder portion (4) being less than 50 % of the distance between said shoulder portion (4) and said coronal end (6), preferably less than 30 %, most preferred less than 20 %.
6. An abutment according to any of the claims 3 to 5, wherein said angle (.alpha.) is in the range 100 to 160°, more preferred 120 to 150°, most preferred 130 to 140°.
7. An abutment according to any of the claims 3 to 6, wherein said component engagement (9) is provided at a transition between said post portion (5) and said shoulder portion (4).
8. An abutment (1) according to any of the claims 3 to 7, wherein said component engagement (9) is formed by a transition part (5') of said post portion (5) having an outer surface (8') that forms an angle (.delta.) with the outer surface (8) of the post portion.
9. An abutment (1) according to claim 8, wherein said angle (.delta.) is in the range to 40°, more preferred 10 to 30° degrees, most preferred 12°.
10. An abutment (1) according to any of the claims 3 to 9, wherein the outer surface (8) of said post portion (5) is tapering inwardly in a coronal direction of said post portion (5) from a maximum post diameter (B).
11. An abutment (1) according to claim 10, wherein said post portion (5) has a longitudinal axis (L) , and said outer surface (8) of the post portion (5) is forming an angle (.PHI.) being less than 20°, preferably less than 15°, most preferred 6 ° in relation to said longitudinal axis (L).
12. An abutment (1) according to claims 8 and 12, wherein said angle (.delta.) formed by the outer surface (8') a transition part (5') of said post portion (5) with the outer surface (8) of said post portion (5) is 2.PHI. ~ 10°, where .PHI., is the angle formed by said outer surface (8) of said post portion (5) with said longitudinal axis (L).
13. An abutment (1) according to any of the claims 3 to 12, wherein said outer surface (7) of said shoulder portion (4) is tapering inwardly in a coronal direction of said shoulder portion (4) from a maximum shoulder diameter (A).
14. An abutment (1) according to claim 13, wherein said abutment (1) has a longitudinal axis (L), and the outer surface (7) of the shoulder portion (4) forms an angle (.chi.) in the range 40 to 60°, preferably 50° degrees in relation to said longitudinal axis (L).
15. An abutment (1) according to any of the claims 3 to 14, wherein the post portion (5) has a maximum diameter (B) in the range 2 to 5 mm.
16. An abutment (1) according to any of the claims 3 to 15, wherein said shoulder portion (4) is having a maximum diameter (A) and said post portion (5) is having a maximum diameter (B) less than said maximum diameter (A) of the shoulder portion (4), the difference between said maximum diameters (A and B) being in the range 0.2 to 1 mm, preferably 0.5 mm.
17. An abutment (1) according to any of the claims 3 to 16, wherein an axial extension of said shoulder portion (4) is in the range 10% to 40 %, preferably 20 % to 30 % of an axial extension of said component support region (3).
18. An abutment (1) according to any of the preceding claims, wherein said maximum diameter (A) of the component support region (3) coincides with the maximum diameter of the abutment (1).
19. An abutment according to any of the preceding claims, wherein said component engagement (9) forms part of a snap lock device.
20. An abutment according to any of the preceding claims, wherein said component engagement (9) comprises at least one protrusion or indentation in an outer surface (7, 8) of said component support region (3).
21. An abutment (1) according to claim 20, wherein said component engagement (9) comprises a groove or rib extending at least partly around a circumference of said outer surface (7, 8) of said component support region (3).
22. An abutment (1) according to any of the previous claims, wherein said abutment (1) is further having an extension region (11) being provided between said implant contacting region (2) and said component support region (3).
23. An abutment (1) according to claim 22, wherein said extension region (11) has an outer surface (13) being parallel to a longitudinal axis (L) of said extension region (11) or being tapering outwardly in said coronal direction.
24. An abutment (1) according to any of the claims 22 to 23, wherein the transition between said extension region (11) and said component support region (3) defines said maximum diameter (A) of said component support region (3).
25. An abutment (1) according to claim 22 to 24, wherein said abutment (1) has a longitudinal axis (L), and the outer surface (13) of said extension region (11) is forming an angle (.phi.) in the range 90° to 180° with said longitudinal axis.
26. An abutment (1) according to any of the claims 22 to 25, wherein an axial extension of said extension region (11) is in the range 10% to 50% as compared to an axial extension of said component support region (3).
27. An abutment (1) according to any of the preceding claims, wherein said implant contacting region (2) comprises a coronal contact portion (12) having an outer surface (14) tapering outwardly in a coronal direction of said abutment (1).
28. An abutment (1) according to claim 27, wherein said abutment (1) has a longitudinal axis (L), and said outer surface (14) of said coronal contact portion (12) is forming an angle (.omega.) with said longitudinal axis (L), said angle (.omega.) being in the range 165 to 170°, preferably 169°.
29. An abutment (1) according to any of the preceding claims, wherein said maximum diameter (A) of the component support region (3) is in the range 3 to mm, preferably 3 to 6 mm.
30. An abutment (1) according to any of the preceding claims, wherein said component support region (3) is provided with at least one rotational lock (15) for rotationally locking of said dental component on said abutment (1).
31. An abutment (1) according to claim 30, wherein said rotational lock (15) is formed in the outer surface (7,8) of said component support region (3).
32. An abutment (1) according to claim 31, wherein said rotational lock means (15) is formed by a flat portion of said outer surface (7, 8) of said component support region (3).
33. An abutment (1) according to any of the preceding claims, wherein said implant contacting region (2) comprises an apical threaded shaft (16) for connection to internal threads of an implant.
34. An abutment (1) according to any of the preceding claims, wherein said abutment (1) is provided with a through bore (17) defining a ledge (18) for seating of a screw for connecting said abutment (1) to an implant.
35. An abutment (1) according to any of the preceding claims, wherein a polygonal blind bore (19) is extending from said coronal end (6) into the abutment (1), said polygonal blind bore (19) being useful for seating of a wrench tool when attaching the abutment (1) to an implant.
36. An abutment (1) according to any of the preceding claims, wherein said abutment is provided with at least one marking (20) positioned coronally of said component engagement means (9) for optional shortening of said abutment (1).
37. A series of abutments (1) according to any of the claims 1 to 36, each abutment having a maximum diameter (A) of said component support region (3), and said maximum diameter (A) being constant for all abutments in said series.
38. A series of abutments (1) according to any of the claims 3 to 36, when dependent on claim 3 or 4, wherein said angle (.alpha.) formed between said outer surface (8) of the post portion and said outer surface (7) of the shoulder portion (4) is constant for all abutments in said series.
39. A series of abutments according to any of the claims 3 to 36, each abutment having a longitudinal axis (L) and further comprising an implant contacting region (2) and an extension region (11) extending between said implant contacting region (2) and said component support region (3), wherein a longitudinal extension of said component support region (3) is constant between all abutments in said series, whereas a longitudinal extension of said extension region (11) varies between different abutments in said series.
40. A series of abutments (1) according to any of the claims 3 to 36, when dependent on claim 3 or 4, each abutment having a longitudinal axis (L) and further comprising an implant contacting region (2) and an extension region (11) extending between said implant contacting region (2) and said component support region (3), wherein - said extension region (11) presents an outer surface (13) forming an angle (.phi.) with said longitudinal axis (L), - said shoulder portion (4) presenting an outer surface (7) tapering inwardly in a coronal direction and forming an angle (.chi.) with said longitudinal axis (L), - said post portion (5) extending coronally from said shoulder portion (4) and presenting an outer surface (8) tapering inwardly in a coronal direction and forming an angle (.PHI.) with said longitudinal axis (L) being less than the angle (.chi.) formed by the outer surface (7) of the shoulder portion (4) with said longitudinal axis (L), wherein, said angle (.chi.) between the outer surface (7) of the shoulder portion (4) and the longitudinal axis (L) and said angle (.PHI.) between the outer surface (8) of the post portion (5) and the longitudinal axis (L) are constant in all abutments in said series, whereas the angle (.phi.) between the outer surface (13) of the said extension region (11) and said longitudinal axis (L) varies between different abutments in said series.
41. A series of abutments (1), each abutment having a component support region (3) comprising a post portion (5) having an outer surface (8) and a shoulder portion (4) having an outer surface (7) forming an angle (.alpha.) less than 180° with said outer surface (8) of the post portion (5) wherein said angle (.alpha.) less than 180° is constant for all abutments in said series.
42. A series of abutments, each abutment having a longitudinal axis (L) and further comprising an implant contacting region (2), a component support region (3) and an extension region (11) extending between said implant contacting region (2) and said component support region (3), wherein a longitudinal extension of said component support region (3) is constant between all abutments in said series, whereas a longitudinal extension of said extension region (11) varies between different abutments in said series.
43. A series of abutments (1) for connection of a dental component to an implant, each abutment having a longitudinal axis (L) and comprising an implant contacting region (2), a component support region (3) and an extension region (11) there between, wherein - said extension region (11) presents an outer surface (13) forming an angle (.phi.) with said longitudinal axis (L), - said component support region (3) comprises a shoulder portion (4) presenting an outer surface (7) tapering inwardly in a coronal direction and forming an angle (.chi.) with said longitudinal axis (L), and a post portion (5) extending coronally from said shoulder portion (4) and presenting an outer surface (8) tapering inwardly in a coronal direction and forming an angle (.PHI.) with said longitudinal axis (L) being less than the angle (.chi.) formed by the outer surface (7) of the shoulder portion (4) with said longitudinal axis (L), wherein, said angle (.chi.) between the outer surface (7) of the shoulder portion (4) and the longitudinal axis (L) and said angle (.PHI.) between the outer surface (8) of the post portion (5) are constant in all abutments in said series, whereas the angle (.phi.) between the outer surface (13) of the said extension region (11) and said longitudinal axis (L) varies between different abutments in said series.
44. An abutment replica (101), comprising a component support region (103) having the outer shape of the component support region (3) of an abutment (1) according to any of the claims 1 to 35, including replicated component engagement means (109)
45. An abutment replica (101) according to claim 44, wherein a bore (130) is extending from an apical end of said abutment replica (101) into the abutment replica (101), at least to a position coronally of said component engagement means (109).
46. An abutment replica (101) according to claim 44 or 45, wherein said bore (130) is a blind bore terminating at a position coronally of said component engagement means (109).
47. An abutment replica (101) according to any of the claims 44 to 46, wherein said abutment replica is provided with a marking (120) positioned coronally of said component engagement means (109) for optional shortening of said abutment replica (101).
48. An impression coping (201) for pick up impression making of a dental abutment (1) attached to a dental implant, comprising an abutment surrounding region (203), for surrounding said abutment (1), said abutment surrounding region (203) having a coronal end (206) and an apical end (240), and having an inner wall (207, 208) being provided with abutment engagement (209) being arranged for releasable engagement with said abutment (1) by linear displacement of said impression coping in relation to said abutment (1), said abutment engagement (209) being located closer to said apical end (240) than to said coronal end (206).
49. An impression coping (201 ) according to claim 48, wherein said abutment surrounding region (203) comprises a shoulder contacting portion (204) having an inner wall (207) and a post surrounding portion (205) extending coronally from said shoulder contacting portion (204) and presenting an inner wall (208) forming an angle (a) larger than 180° with said inner wall (207) of said shoulder contacting portion (204), wherein said abutment engagement (209) is provided at the post surrounding portion (205), at a position being closer to the shoulder contacting portion (204) than to the coronal end (206) of the abutment surrounding region (203).
50. An impression coping according to claim 49, wherein said abutment engagement means (209) is provided at a distance from said shoulder contacting portion (204) being less than 50% the distance between said shoulder contacting portion (204) and said coronal end (206), preferably less than 30 %, most preferred less than 20 %.
51. An impression coping according to claim 49 or 50, wherein said angle (a) is in the range 200 to 260°, preferably 210 to 240°, most preferred 220 to 230°.
52. An impression coping according to any of the claims 49 to 51, wherein said abutment engagement (209) is provided at a transition between said post surrounding portion (205) and said shoulder contacting portion (204).
53. Am impression coping according to any of the claims 48 to 52, wherein said abutment engagement (209) forms part of a snap lock device.
54. An impression coping (201) according to any of the claims 48 to 53, wherein said abutment engagement (209) comprises at least one protrusion or indentation in an inner wall (207, 208) of said abutment surrounding region (203).
55. An impression coping (201) according to claim 54, wherein said abutment engagement (209) comprises a groove or rib extending at least partly around a circumference of the inner wall (207, 208) of said abutment surrounding region (203).
56. An impression coping (201) according to any of the claims 48 to 55, said impression coping (201) having a through passage (217) extending from a coronal end to an apical end of the impression coping (201).
57. An impression coping (201) according to claim 56, said impression coping (201) having a longitudinal axis (L), wherein the inner walls (208) of said abutment surrounding region (203) comprises at least one abutment contact. surface (243) for contact with said abutment (1), and at least one space forming surface (244) to be spaced apart from said abutment in order to provide a space between said space forming surface (244) and said abutment (1), and in a transversal section of said abutment surrounding region (203), a distance (r1) from said longitudinal axis (L) to said abutment contact surface (243) is shorter than a distance (r2) from said longitudinal axis (L) to said space forming surface (244).
58. An impression coping (201) according to claim 57, wherein said space forming surface (244) is provided with a vent (245) for passage of air and/or impression material.
59. An impression coping (201) according to claim 57 or 58, wherein at least one abutment contact surface (243) is tapering inwardly in a coronal direction of said impression coping (201).
60. An impression coping (201) according to claim 59, wherein said at least one abutment contact surface (243) is forming an angle of taper of less than 20°, preferably less than 15°, most preferred 6° with a longitudinal axis of said impression coping (201).
61. An impression coping (201) according to any of the claims 57 to 60, wherein at least one abutment contact surface (243) is provided with a rotational locking means (215), for rotational locking of said impression coping (201) on said dental abutment (1).
62. An impression coping (201) according to claim 61, wherein said rotational locking means (215) is formed by a flat portion of said abutment contact surface (243).
63. An impression coping (201) according to any of the claims 57 to 62, wherein at least one space forming surface (244) is provided coronally of said abutment engagement means (209).
64. An impression coping (201) according to any of the claims 57 to 63, having at least two abutment contact surfaces (243) arranged to face each other, and two space forming surfaces (244) being arranged between said abutment contact surfaces (243), also facing each other.
65. An impression coping (201) according to any of the claims 48 to 64, having a prolongation region (241) being provided coronally of said abutment surrounding region (203), for extension into an impression material.
66. An impression coping (201) according to claim 65, wherein said prolongation region (241) is provided with retention elements (242) for retention of the impression coping (201) in an impression material.
67. A set, comprising an abutment (1) for connection of a dental component to an implant and an impression coping (201) for pick-up impression making of said abutment (1), said abutment (1) comprising an implant contacting region (2) and a component support region (3) having a maximum diameter (A), said component support region (3) extending coronally from said maximum diameter (A) to a coronal end (6), and being provided with component engagement (9) at a position closer to said maximum diameter (A) than to said coronal end (6), and said impression coping (201) comprising an abutment surrounding region (203) for surrounding said abutment (1) and having an inner wall (208) being provided with abutment engagement (209) corresponding to the component engagement (9) of said abutment (1) for releasable engagement of the impression coping (201) to the abutment (1) by linear displacement of said dental component in relation to said abutment (1).
68. A set according to claim 67, wherein a maximum outer diameter of an abutment contacting portion (203) of said impression coping (201) is less than or equal to said maximum diameter (A) of said abutment (1).
69. A set according to claim 67 or 68, wherein said abutment (1) comprises an implant contacting region (2) and a component support region (3), and said impression coping (201) is having a through passage extending from a coronal end to an apical end of said impression coping (201) and comprises an abutment surrounding region (203) for seating on said abutment (1), wherein the inner walls (207, 208) of said abutment surrounding region (203) comprise at least one post contact surface (243) for contact with said abutment (1) and at least one space forming surface (244) to be spaced apart from said abutment (1) in order to provide a space for optional introduction of impression material between said space forming surface (244) and said abutment (1).
CA2466078A 2001-11-01 2002-11-01 Components for improved impression making Expired - Fee Related CA2466078C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/985,129 2001-11-01
US09/985,129 US6824386B2 (en) 2001-11-01 2001-11-01 Components for improved impression making
PCT/SE2002/001995 WO2003037208A1 (en) 2001-11-01 2002-11-01 Components for improved impression making

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CA2466078A1 true CA2466078A1 (en) 2003-05-08
CA2466078C CA2466078C (en) 2012-02-07

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US (2) US6824386B2 (en)
EP (1) EP1448113B1 (en)
JP (1) JP4662710B2 (en)
KR (1) KR100928655B1 (en)
CN (1) CN100415184C (en)
AU (1) AU2002347711B2 (en)
BR (1) BR0213715A (en)
CA (1) CA2466078C (en)
ES (1) ES2562021T3 (en)
RU (1) RU2299705C2 (en)
WO (1) WO2003037208A1 (en)
ZA (1) ZA200402596B (en)

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