Dental implant

Abstract

Dental implant ( 10 ) for rotation into the bone tissue of a jaw bone consisting of a body having an axis of rotation, a coronal end surface ( 5 ), an apical end surface ( 1 ) and a generally cylindrical section ( 7 ) which has a coronal edge coincident with, or in close proximity to, the coronal end surface and an outer peripheral surface which extends apically towards the apical end surface from the coronal edge. The outer peripheral surface is presented by a circumferentially-oriented roughness ( 19 ) comprising a series of circumferentially-oriented peaks which are axially spaced apart by troughs and oriented at an inclined angle to the axis of rotation. The height from the troughs to the peaks throughout the circumferentially-oriented roughness is greater than 0.2 mm.

What is claimed is: 
     
       1. A dental implant for rotation into the bone tissue of a jaw bone consisting of a body having:
 (a) an axis of rotation; 
 (b) a coronal end surface; 
 (c) an apical end surface; and 
 (d) a generally cylindrical section which has:
 (i) a coronal edge in close proximity to, the coronal end surface, and 
 (ii) an outer peripheral surface which extends apically, towards the apical end surface from the coronal edge and is presented by a circumferentially-oriented roughness comprising a series of circumferentially-oriented peaks which are axially spaced apart by troughs and oriented at an a generally constant inclined angle with respect to the axis of rotation so the dental implant rotates and screws into the jaw bone; 
 wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is greater than 0.2 mm, and the coronal edge of the generally cylindrical section is separates the generally cylindrical section from a conical portion extending to the coronal edge, the conical portion tapering inwardly as the conical portion extends from the coronal edge to the coronal end surface, the coronal edge and circumferentially-oriented roughness are spaced from the coronal end surface of the body by no more than approximately 4% of the distance between the coronal and apical end surfaces of the body. body, 
 
 wherein the largest diameter of the dental implant is at the generally cylindrical section. 
 
     
     
       2. The implant as claimed in  claim 1 , wherein the coronal edge of the generally cylindrical section is spaced from the coronal end surface of the body by a coronal section of the body having the conical portion has an outer peripheral surface not presented by a circumferentially-oriented roughness. 
     
     
       3. The implant as claimed in  claim 1 , wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is approximately 0.3 mm. 
     
     
       4. The implant as claimed in  claim 1 , wherein the circumferentially-oriented roughness is formed by one or more screw threads. 
     
     
       5. The implant as claimed in  claim 1 , wherein the circumferentially-oriented roughness is formed by a series of axially spaced-apart circumferential lines of beads. 
     
     
       6. The implant as claimed in  claim 5 , wherein the beads in each line are circumferentially spaced-apart. 
     
     
       7. The implant as claimed in  claim 1 , wherein the outer peripheral surface of the generally cylindrical section extends apically from the coronal edge over a major proportion of the distance between the coronal edge and the apical end surface of the body. 
     
     
       8. The implant as claimed in  claim 1 , wherein the generally cylindrical section has an apical edge which is spaced from the apical end surface of the body by no more than approximately 20% of the distance between the coronal and apical end surfaces of the body and the outer peripheral surface of the generally cylindrical section extends to the apical edge. 
     
     
       9. A dental implant for rotation into the bone tissue of a jaw bone consisting of a body having:
 (a) an axis of rotation;   (b) a coronal end surface;   (c) an apical end surface; and   (d) a generally cylindrical section which has:
 (i) a coronal edge coincident with the coronal end surface, and 
 (ii) an outer peripheral surface which extends apically towards the apical end surface from the coronal edge and is presented by a circumferentially-oriented roughness comprising a series of circumferentially-oriented peaks which are axially spaced apart by troughs and oriented at an inclined angle to the axis of rotation; 
 wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is greater than 0.2 mm. 
   
     
     
       10. The implant as claimed in  claim 9 , wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is approximately 0.3 mm. 
     
     
       11. The implant as claimed in  claim 9 , wherein the circumferentially-oriented roughness is formed by one or more screw threads. 
     
     
       12. The implant as claimed in  claim 9 , wherein the circumferentially-oriented roughness is formed by a series of axially spaced-apart circumferential lines of beads. 
     
     
       13. The implant as claimed in  claim 12 , wherein the beads in each line are circumferentially spaced-apart. 
     
     
       14. The implant as claimed in  claim 9 , wherein the outer peripheral surface of the generally cylindrical section extends apically from the coronal edge over a major proportion of the distance between the coronal edge and the apical end surface of the body. 
     
     
       15. The implant as claimed in  claim 9 , wherein the generally cylindrical section has an apical edge which is spaced from the apical end surface of the body by no more than approximately 20% of the distance between the coronal and apical end surfaces of the body and the outer peripheral surface of the generally cylindrical section extends to the apical edge. 
     
     
       16. The implant as claimed in claim 1, wherein the coronal edge of the generally cylindrical section is spaced from the coronal end surface of the body by a coronal section of the body having an outer peripheral surface not presented by the circumferentially-oriented roughness that is no more than 4% of the distance between the coronal and apical end surfaces of the body. 
     
     
       17. The implant as claimed in claim 1, wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is substantially constant. 
     
     
       18. The implant as claimed in claim 1, wherein in an implanted state, the coronal edge of the dental implant protrudes from a maxilla or mandible so as to receive an artificial tooth. 
     
     
       19. A dental implant for rotation into the bone tissue of a jaw bone comprising a body having:
 (a) an axis of rotation;   (b) a coronal end surface;   (c) an apical end surface; and   (d) a section which has:
 i. a coronal edge in close proximity to the coronal end surface, and 
 ii. an outer peripheral surface which extends apically towards the apical end surface from the coronal edge and is presented by a circumferentially-oriented roughness comprising a series of circumferentially-oriented peaks which are axially spaced apart by troughs and oriented at a generally constant inclined angle to the axis of rotation so the dental implant rotates and screws into the jaw bone; 
   wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is greater than 0.2 mm, and the coronal edge of the section separates the section from a conical portion extending to the coronal edge, the conical portion tapering inwardly as the conical portion extends form the coronal edge to the coronal end surface, the coronal edge and circumferentially-oriented roughness are spaced from the coronal end surface of the body by the conical portion of the body having an outer peripheral surface not presented by the circumferentially-oriented roughness that is no more than 4% of the distance between the coronal and apical end surfaces of the body,   wherein the largest diameter of the dental implant is at the circumferentially-oriented roughness.   
     
     
       20. The implant as claimed in claim 19, wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is 0.3 mm. 
     
     
       21. The implant as claimed in claim 19, wherein the circumferentially-oriented roughness is formed by one or more screw threads. 
     
     
       22. The implant as claimed in claim 19, wherein the circumferentially-oriented roughness is formed by a series of axially spaced-apart circumferential lines of beads. 
     
     
       23. The implant as claimed in claim 22, wherein the beads in each line are circumferentially spaced-apart. 
     
     
       24. The implant as claimed in claim 19, wherein the outer peripheral surface of the cylindrical section extends apically from the coronal edge over a major portion of the distance between the coronal edge and the apical end surface of the body. 
     
     
       25. The implant as claimed in claim 19, wherein the cylindrical section has an apical edge which is spaced from the apical end surface of the body by no more than 20% of the distance between the coronal and apical end surfaces of the body and the outer peripheral surface of the cylindrical section extends to the apical edge. 
     
     
       26. The implant as claimed in claim 19, wherein a spacer or transmucosal component is engaged to the dental implant. 
     
     
       27. The implant as claimed in claim 19, wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is substantially constant. 
     
     
       28. The implant as claimed in claim 19, wherein in an implanted state, the coronal edge of the dental implant protrudes from a maxilla or mandible so as to receive an artificial tooth. 
     
     
       29. A dental implant for implanting in a jaw bone into a bore-hole from an entry point thereof, said implant comprising a body having:
 (a) an axis of rotation;   (b) a coronal end surface;   (c) an apical end surface; and   (d) a section which has:
 i. a coronal edge in close proximity to the coronal end surface, and 
 ii. an outer peripheral surface which extends apically towards the apical end surface from the coronal edge and is presented by a circumferentially-oriented roughness comprising a series of circumferentially-oriented peaks which are axially spaced apart by troughs and oriented at a generally constant inclined angle to the axis of rotation so the dental implant rotates and screws into the jaw bone; 
   wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness of the cylindrical section is greater than 0.2 mm, and the coronal edge of the cylindrical section separates the cylindrical section from a conical portion extending to the coronal edge, the conical portion tapering inwardly as the conical portion extends from the coronal edge to the coronal end surface, the coronal edge and circumferentially-oriented roughness are spaced from the coronal end surface of the body by the conical portion of the body having an outer peripheral surface not presented by the circumferentially-oriented roughness that is no more than 4% of the distance between the coronal and apical end surfaces of the body, and   wherein in an implanted state, said circumferentially-oriented roughness of the section adapted to interface with the bone tissue adjacent said entry point of the dental implant,   wherein the largest diameter of the dental implant is at the circumferentially-oriented roughness.   
     
     
       30. The implant as claimed in claim 29, wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is substantially constant. 
     
     
       31. The implant as claimed in claim 29, wherein in the implanted state, the coronal edge of the dental implant protrudes from a maxilla or mandible so as to receive an artificial tooth.