Anatomical restoration dental implant system with healing abutment member and matching abutment member

• US 5,810,592 A
• Filed: 05/06/1996
• Issued: 09/22/1998
• Est. Priority Date: 05/06/1996
• Status: Expired due to Term

• Current Assignee: Fereidoun Daftary
• Original Assignee: Fereidoun Daftary
• Inventors: Daftary, Fereidoun
• Primary Examiner(s): Wilson, John J.
• Application Number:
  US08/642,889
• Time in Patent Office: 869 Days
• Field of Search: 433/172, 433/173, 433/174, 433/175, 433/176, 433/201.1
• US Class Current: 433/173
• CPC Class Codes: A61C 13/0001 In-situ dentures; Trial or temporary dentures
• CPC Class Codes: A61C 8/005 Connecting devices for joining an upper structure with an implant member, e.g. spacers
• CPC Class Codes: A61C 8/006 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 8/0068 with an additional screw
• CPC Class Codes: A61C 8/0077 with shape following the gingival surface or the bone surface
• CPC Class Codes: A61C 8/008 Healing caps or the like

Abstract

An anatomical restoration dental implant system which is attachable to an anatomical restoration dental implant fixture which is embedded into a patient'"'"'s jawbone. The system includes a healing abutment, a large bolt member, a matching abutment head, and a small bolt member. The healing abutment has an intermediate shoulder for accommodating the gingival tissues which surround the patient'"'"'s jawbone. The intermediate shoulder has a lingual-side portion which is at a higher level and flush with the top end of the healing abutment, a facial-side portion which is at a lower level and adjacent to the bottom end of the healing abutment, and two opposite interproximal-side portions which are gradually changing from the higher level at the lingual-side portion to the lower level at the facial-side portion.

Claims

1. An apparatus attachable to an anatomical restoration dental implant fixture which is embedded into a patient'"'"'s jawbone and has an exposed open end with inner screw threads, the apparatus comprising:

a. a healing abutment having a generally divergent body with a smaller proximal end and a larger distal end, the divergent body also having an interior bore extending from the distal end to the proximal end, the divergent body further having an intermediate shoulder for accommodating the gingival tissues surrounding the patient'"'"'s jawbone, the shoulder having a lingual-side portion having a higher level which is flush with the distal end of the divergent body, a facial-side portion having a lower level close to the proximal end, and two opposite interproximal-side portions gradually changing from the higher level to the lower level, the lingual-side portion of said shoulder having a greater surface area than the facial-side portion of said shoulder;

b. a first bolt member having a head segment and an elongated shaft segment, the head segment having an exposed open end with inner screw threads, the shaft segment having outer screw threads;

c. said shaft segment of said first bolt member being longer than said interior bore of said healing abutment, such that after said shaft segment of said bolt member extends through said interior bore of said healing abutment from said proximal end of said healing abutment, there is still a substantial portion of said outer screw threads of said shaft segment of said first bolt member which can be threadably engaged with said implant fixture for fastening said healing abutment to said exposed end of said implant fixture, where said head segment of said first bolt member extends above said distal end of said healing abutment;

d. a matching abutment head for supporting a tooth analogue and having a generally frusto-conical shaped body, the frusto-conical shaped body having a larger proximal end with a widened socket, a smaller distal end with a circular opening, and an interior bore extending from the widened socket to the circular opening;

e. said larger proximal end of said frusto-conical shaped body of said abutment head installed on said distal end of said healing abutment, such that said widened socket matches said head segment of said first bolt member; and

f. a second bolt member having a circular shaped head segment and a shaft segment with outer screw threads, the head segment having an internal opening for adapting a driving tool such that the second bolt member extends through said interior bore of said abutment head from said circular opening and the outer screw threads threadedly engage said inner screw threads of said exposed open end of said head segment of said first bolt member, thereby securing said abutment head to said healing abutment;

g. whereby said facial-side portion of said healing abutment accommodates the contour of the gingival tissue at the facial side of said patient and said lingual-side portion of said healing abutment accommodates the contour of the gingival tissue at the lingual side of said patient.

2. The apparatus in accordance with claim 1 further comprising a mating interface at said exposed end of said implant fixture and a complementary mating interface at said smaller proximal end of said healing abutment for orienting and aligning said healing abutment.

3. The apparatus in accordance with claim 2 wherein said mating interface at said exposed end of said implant fixture is a hexagonal lip and said complementary mating interface at said smaller proximal end of said healing abutment is a hexagonal recess.

4. The apparatus in accordance with claim 1 wherein said larger distal end of said healing abutment further comprises two opposite indents adaptable with a dental forceps for orienting said healing abutment.

5. The apparatus in accordance with claim 1 wherein said head segment of said first bolt member has means cooperable with a driving tool.

6. The apparatus in accordance with claim 1 wherein said widened socket at said larger proximal end of said frusto-conical shaped body of said abutment head is a hexagonal recess.

7. The apparatus in accordance with claim 6 wherein said head segment of said first bolt member is a hexagonal lip which matches said hexagonal recess at said frusto-conical shaped body of said abutment head.

8. The apparatus in accordance with claim 1 wherein said larger distal end of said healing abutment is generally a rounded equilateral triangle shape.

9. The apparatus in accordance with claim 1 wherein said larger distal end of said healing abutment is generally a rounded isosceles triangle shape.

10. The apparatus in accordance with claim 1 wherein said larger distal end of said healing abutment is generally an elliptical shape.

11. An apparatus attachable to an anatomical restoration dental implant fixture which is embedded into a patient'"'"'s jawbone and has an exposed open end with inner screw threads, the apparatus comprising:

a. a generally divergent body having a proximal end and a distal end, the divergent body also having an interior bore extending from the distal end to the proximal end, the divergent body further having an intermediate shoulder for accommodating the gingival tissues surrounding the patient'"'"'s jawbone, the shoulder having a lingual-side portion having a higher level which is flush with the distal end of the divergent body, a facial-side portion having a lower level close to the proximal end, and two opposite interproximal-side portions gradually changing from the higher level to the lower level, the lingual-side portion of said shoulder having a greater surface area than the facial-side portion of said shoulder;

b. a first bolt member being longer than said interior bore of said divergent body, such that after the first bolt member extends through said interior bore of said divergent body from said proximal end of said divergent body, the first bolt member securely fastens said divergent body to said exposed end of said implant fixture;

c. an abutment head for supporting a tooth analogue and having a generally frusto-conical shaped body, the frusto-conical shaped body having a proximal end, a distal end, and an interior bore extending from the proximal end to the distal end, the proximal end of the frusto-conical shaped body installed on said distal end of said divergent body; and

d. a second bolt member extending through said interior bore of said abutment head from said distal end such that the second bolt member securely fastens said abutment head to said divergent body;

e. whereby said facial-side portion of said divergent body accommodates the contour of the gingival tissue at the facial side of said patient and said lingual-side portion of said divergent body accommodates the contour of the gingival tissue at the lingual side of said patient.

12. The apparatus in accordance with claim 11 further comprising a mating interface at said exposed end of said implant fixture and a complementary mating interface at said proximal end of said divergent body for orienting and aligning said divergent body.

13. The apparatus in accordance with claim 11 wherein said distal end of said divergent body further comprises two opposite indents adaptable with a dental forceps for orienting said divergent body.

14. The apparatus in accordance with claim 11 wherein said head segments of said first and second bolt members have means cooperable with a driving tool.

15. The apparatus in accordance with claim 11 wherein said distal end of said divergent body is generally a rounded equilateral triangle shape.

16. The apparatus in accordance with claim 11 wherein said distal end of said divergent body is generally a rounded isosceles triangle shape.

17. The apparatus in accordance with claim 11 wherein said distal end of said divergent body is generally an elliptical shape.

18. An apparatus attachable to an anatomical restoration dental implant fixture which is embedded into a patient'"'"'s jawbone and has an exposed open end with inner screw threads, the apparatus comprising:

a. a healing abutment having a generally divergent body with a smaller proximal end and a larger distal end, the divergent body also having an interior bore extending from the distal end to the proximal end, the divergent body further having an intermediate shoulder for accommodating the gingival tissues surrounding the patient'"'"'s jawbone, the shoulder having a lingual-side portion having a higher level which is flush with the distal end of the divergent body, a facial-side portion having a lower level close to the proximal end, and two opposite interproximal-side portions gradually changing from the higher level to the lower level, the lingual-side portion of said shoulder having a greater surface area than the facial-side portion of said shoulder;

b. a matching abutment member further comprising,

(i) a proximal bolt portion having a head segment and an elongated shaft segment, the shaft segment having outer screw threads, the shaft segment being longer than said interior bore of said healing abutment, such that after the shaft segment extends through said interior bore of said healing abutment from said proximal end of said healing abutment, there is still a substantial portion of the outer screw threads of the shaft segment which can be threadably engaged with said implant fixture for fastening said healing abutment to said exposed end of said implant fixture, and

(ii) a generally frusto-conical shaped distal head portion for supporting a tooth analogue and having a larger proximal end and a smaller distal end, the larger proximal end integrally connected to said head segment of said proximal bolt portion;

c. whereby said facial-side portion of said healing abutment accommodates the contour of the gingival tissue at the facial side of said patient and said lingual-side portion of said healing abutment accommodates the contour of the gingival tissue at the lingual side of said patient.

19. The apparatus in accordance with claim 18 further comprising a mating interface at said exposed end of said implant fixture and a complementary mating interface at said smaller proximal end of said healing abutment for orienting and aligning said healing abutment.

20. The apparatus in accordance with claim 19 wherein said mating interface at said exposed end of said implant fixture is a hexagonal lip and said complementary mating interface at said smaller proximal end of said healing abutment is a hexagonal recess.

21. The apparatus in accordance with claim 18 wherein said larger distal end of said healing abutment further comprises two opposite indents adaptable with a dental forceps for orienting said healing abutment.

22. The apparatus in accordance with claim 18 wherein said smaller distal end of said frusto-conical shaped distal head portion of said abutment member has a notch to accommodate a driving tool such as a screw driver for rotating said abutment member.

23. The apparatus in accordance with claim 18 wherein said larger distal end of said healing abutment is generally a rounded equilateral triangle shape.

24. The apparatus in accordance with claim 18 wherein said larger distal end of said healing abutment is generally a rounded isosceles triangle shape.

25. The apparatus in accordance with claim 18 wherein said larger distal end of said healing abutment is generally an elliptical shape.

26. An apparatus attachable to an anatomical restoration dental implant fixture which is embedded into a patient'"'"'s jawbone and has an exposed open end with inner screw threads, the apparatus comprising:

a. a generally divergent body having a proximal end and a distal end, the divergent body also having an interior bore extending from the distal end to the proximal end, the divergent body further having an intermediate shoulder for accommodating the gingival tissues surrounding the patient'"'"'s jawbone, the shoulder having a lingual-side portion having a higher level which is flush with the distal end of the divergent body, a facial-side portion having a lower level close to the proximal end, and two opposite interproximal-side portions gradually changing from the higher level to the lower level, the lingual-side portion of said shoulder having a greater surface area than the facial-side portion of said shoulder;

b. an abutment member further comprising,

(i) a proximal bolt portion being longer than said interior bore of said divergent body, such that after the proximal bolt portion extends through said interior bore of said divergent body from said proximal end of said divergent body, the proximal bolt portion threadably engages with said implant fixture for fastening said divergent body to said exposed end of said implant fixture, and

(ii) a generally frusto-conical shaped distal head portion for supporting a tooth analogue and integrally connected to said proximal bolt portion;

c. whereby said facial-side portion of said divergent body accommodates the contour of the gingival tissue at the facial side of said patient and said lingual-side portion of said divergent body accommodates the contour of the gingival tissue at the lingual side of said patient.

27. The apparatus in accordance with claim 26 further comprising a mating interface at said exposed end of said implant fixture and a complementary mating interface at said proximal end of said divergent body for orienting and aligning said divergent body.

28. The apparatus in accordance with claim 26 wherein said distal end of said divergent body further comprises two opposite indents adaptable with a dental forceps for orienting said divergent body.

29. The apparatus in accordance with claim 26 wherein said frusto-conical shaped distal head portion of said abutment member further comprises a distal end with a notch to accommodate a driving tool such as a screw driver for rotating said abutment member.

30. The apparatus in accordance with claim 26 wherein said distal end of said divergent body is generally a rounded equilateral triangle shape.

31. The apparatus in accordance with claim 26 wherein said distal end of said divergent body is generally a rounded isosceles triangle shape.

32. The apparatus in accordance with claim 26 wherein said distal end of said divergent body is generally an elliptical shape.

33. An apparatus attachable to an anatomical restoration dental implant fixture which is embedded into a patient'"'"'s jawbone and has an exposed open end with inner screw threads, the apparatus comprising:

a. an integral member further comprising,

(i) a healing abutment portion having a generally divergent body with a larger distal end and a smaller proximal end, the divergent body also having an interior bore extending from the distal end to the proximal end, the divergent body further having an intermediate shoulder for accommodating the gingival tissues surrounding the patient'"'"'s jawbone, the shoulder having a lingual-side portion having a higher level which is flush with the distal end of the divergent body, a facial-side portion having a lower level close to the proximal end, and two opposite interproximal-sides gradually changing from the higher level to the lower level, the lingual-side portion of said shoulder having a greater surface area than the facial-side portion of said shoulder;

(ii) a matching abutment portion for supporting a tooth analogue and having a generally frusto-conical shaped body, the frusto-conical shaped body having a larger proximal end integrally connected to said larger distal end of said healing abutment portion, a smaller distal end with a circular opening, and an interior bore extending from the circular opening to said smaller proximal end of said healing abutment portion; and

b. a bolt member having a circular shaped head segment and an elongated shaft segment with outer screw threads, the head segment having an internal opening for adapting a driving tool such that the bolt member extends through said interior bores of said healing abutment portion and said matching abutment portion and extending from said proximal end of said healing abutment portion and the outer screw threads threadedly engaged said inner screw threads of said exposed open end of said implant fixture for fastening said integral member to said implant fixture;

c. whereby said facial-side of said healing abutment portion accommodates the contour of the gingival tissue at the facial side of said patient and said lingual-side of said healing abutment portion accommodates the contour of the gingival tissue at the lingual side of said patient.

34. The apparatus in accordance with claim 33 further comprising a mating interface at said exposed end of said implant fixture and a complementary mating interface at said smaller proximal end of said healing abutment portion for orienting and aligning said integral member.

35. The apparatus in accordance with claim 34 wherein said mating interface at said exposed end of said implant fixture is a hexagonal lip and said complementary mating interface at said smaller proximal end of said healing abutment portion is a hexagonal recess.

36. The apparatus in accordance with claim 33 wherein said larger distal end of said healing abutment portion is generally a rounded equilateral triangle shape.

37. The apparatus in accordance with claim 33 wherein said larger distal end of said healing abutment portion is generally a rounded isosceles triangle shape.

38. The apparatus in accordance with claim 33 wherein said larger distal end of said healing abutment portion is generally an elliptical shape.

39. An apparatus attachable to an anatomical restoration dental implant fixture which is embedded into a patient'"'"'s jawbone and has an exposed open end with inner screw threads, the apparatus comprising:

a. an integral member further comprising,

(i) a generally divergent body having a proximal end and a distal end, the divergent body also having an interior bore extending from the distal end to the proximal end, the divergent body further having an intermediate shoulder for accommodating the gingival tissues surrounding the patient'"'"'s jawbone, the shoulder having a lingual-side portion having a higher level which is flush with the distal end of the divergent body, a facial-side portion having a lower level close to the proximal end, and two opposite interproximal-sides gradually changing from the higher level to the lower level, the lingual-side portion of said shoulder having a greater surface area than the facial-side portion of said shoulder;

(ii) a matching abutment portion for supporting a tooth analogue and having a generally frusto-conical shaped body, the frusto-conical shaped body having a proximal end integrally connected to said distal end of said divergent body, a distal end, and an interior bore extending from the distal end to said proximal end of said divergent body; and

b. a bolt member extending through said interior bores of said abutment portion and said divergent body from said proximal end of said divergent body such that the bolt member threadedly engages said inner screw threads of said exposed open end of said implant fixture for fastening said integral member to said implant fixture;

c. whereby said facial-side of said divergent body accommodates the contour of the gingival tissue at the facial side of said patient and said lingual-side of said divergent body accommodates the contour of the gingival tissue at the lingual side of said patient.

40. The apparatus in accordance with claim 39 further comprising a mating interface at said exposed end of said implant fixture and a complementary mating interface at said proximal end of said divergent body for orienting and aligning said integral member.

41. The apparatus in accordance with claim 39 wherein said bolt member further comprises an open end for cooperable with a driving tool.

42. The apparatus in accordance with claim 39 wherein said distal end of said divergent body is generally a rounded equilateral triangle shape.

43. The apparatus in accordance with claim 39 wherein said distal end of said divergent body is generally a rounded isosceles triangle shape.

44. The apparatus in accordance with claim 39 wherein said distal end of said divergent body is generally an elliptical shape.

45. An apparatus attachable to an anatomical restoration dental implant fixture which is embedded into a patient'"'"'s jawbone and has an exposed open end with inner screw threads, the apparatus comprising:

a. a healing abutment having a generally divergent body with a smaller proximal end and a larger distal end, the divergent body also having an interior bore extending from the distal end to the proximal end, the divergent body further having an intermediate shoulder for accommodating the gingival tissues surrounding the patient'"'"'s jawbone, the shoulder having a lingual-side portion having a higher level which is flush with the distal end of the divergent body, a facial-side portion having a lower level close to the proximal end, and two opposite interproximal-side portions gradually changing from the higher level to the lower level, the lingual-side portion of said shoulder having a greater surface area than the facial-side portion of said shoulder; and

b. a bolt member having a head segment and an elongated shaft segment, the head segment having an exposed open end with inner screw threads, the shaft segment having outer screw threads, the shaft segment being longer than said interior bore of said healing abutment, such that after the shaft segment extends through said interior bore of said healing abutment from said proximal end of said healing abutment, there is still a substantial portion of the outer screw threads of the shaft segment which can be threadably engaged with said implant fixture for fastening said healing abutment to said exposed end of said implant fixture;

c. whereby said facial-side portion of said healing abutment accommodates the contour of the gingival tissue at the facial side of said patient and said lingual-side portion of said healing abutment accommodates the contour of the gingival tissue at the lingual side of said patient.

46. The apparatus in accordance with claim 45 further comprising a matching abutment head for supporting a tooth analogue and having a frusto-conical shaped body, the frusto-conical shaped body having a larger proximal end with a widened socket, a smaller distal end with a circular opening, and an interior bore extending from the widened socket to the circular opening, the larger proximal end installed on said distal end of said healing abutment, such that the widened socket matches said head segment of said bolt member.

47. The apparatus in accordance with claim 45 further comprising another bolt member having a head segment and a shaft segment with outer screw threads, the head segment having an internal opening for adapting a driving tool such that the another bolt member extends through said interior bore of said abutment head from said circular opening at said smaller distal end of said frusto-conical shaped body of said abutment head and the outer screw threads threadedly engaged said inner screw threads of said exposed open end of said head segment of said bolt member, thereby securing said abutment head to said healing abutment.

48. The apparatus in accordance with claim 45 wherein said larger distal end of said healing abutment is generally a rounded equilateral triangle shape.

49. The apparatus in accordance with claim 45 wherein said larger distal end of said healing abutment is generally a rounded isosceles triangle shape.

50. The apparatus in accordance with claim 45 wherein said larger distal end of said healing abutment is generally an elliptical shape.

51. An apparatus attachable to an anatomical restoration dental implant fixture which is embedded into a patient'"'"'s jawbone and has an exposed open end with inner screw threads, the apparatus comprising:

a. a generally divergent body having a proximal end and a distal end, the divergent body also having an interior bore extending from the distal end to the proximal end, the divergent body further having an intermediate shoulder for accommodating the gingival tissues surrounding the patient'"'"'s jawbone, the shoulder having a lingual-side portion having a higher which is flush with the distal end of the divergent body, a facial-side portion having a lower level close to the proximal end, and two opposite interproximal-side portions gradually changing from the higher level to the lower level, the lingual-side portion of said shoulder having a greater surface area than the facial-side portion of said shoulder;

b. whereby said facial-side portion of said divergent body accommodates the contour of the gingival tissue at the facial side of said patient and said lingual-side portion of said divergent body accommodates the contour of the gingival tissue at the lingual side of said patient.

52. The apparatus in accordance with claim 51 further comprising a bolt member having a head segment and an elongated shaft segment, the head segment having an exposed open end with inner screw threads, the shaft segment having outer screw threads, the shaft segment being longer than said interior bore of said divergent body, such that after the shaft segment of the bolt member extends through said interior bore of said divergent body from said distal end of said divergent body, the outer screw threads of the shaft segment of the bolt member threadably engaged with said inner screw threads of said implant fixture for fastening said divergent body to said implant fixture.

53. The apparatus in accordance with claim 51 further comprising an abutment head for supporting a tooth analogue and having a frusto-conical shaped body, the frusto-conical shaped body having a proximal end with a widened socket, a distal end with a circular opening, and an interior bore extending from the widened socket to the circular opening, the proximal end installed on said distal end of said divergent body, such that the widened socket matches said head segment of said bolt member.

54. The apparatus in accordance with claim 51 further comprising another bolt member having a head segment and a shaft segment with outer screw threads, the head segment having an internal opening such that the another bolt member extends through said interior bore of said abutment head from said circular opening and the outer screw threads threadedly engaged said inner screw threads of said exposed open end of said head segment of said bolt member, thereby securing said abutment head to said divergent body.

55. The apparatus in accordance with claim 51 wherein said distal end of said divergent body is generally a rounded equilateral triangle shape.

56. The apparatus in accordance with claim 51 wherein said distal end of said divergent body is generally a rounded isosceles triangle shape.

57. The apparatus in accordance with claim 51 wherein said distal end of `said divergent body is generally an elliptical shape.