IMPLANTABLE SCREW AND SYSTEM FOR SOCKET PRESERVATION

• US 20110020768A1
• Filed: 07/24/2009
• Published: 01/27/2011
• Est. Priority Date: 07/24/2009
• Status: Active Grant

• Current Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Original Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Inventors: SPAGNOLI, Daniel B., Mobley, Todd A., Scifert, Jeffrey L.
• Granted Patent: US 9,539,068 B2
• Time in Patent Office: Days
• US Class Current: 433/174
• CPC Class Codes: A61C 2008/0084 Provisional implants or abutments
• CPC Class Codes: A61C 8/0024 with self-boring cutting edge
• CPC Class Codes: A61C 8/0075 Implant heads specially designed for receiving an upper structure if separable from the implant A61C8/005
• CPC Class Codes: A61C 8/008 Healing caps or the like

Abstract

An implantable screw for preserving the integrity of an oral socket and for maintaining space during bone grafting procedures is provided, where the screw has a healing abutment head having a region adapted to support soft tissue, a threaded shaft and a tip adapted to penetrate bone tissue. The temporary implantable screws provided may be used in conjunction with bone graft materials and are removable for placement of an oral implant.

Claims

1. A temporary implantable screw for preserving the integrity of an oral socket, the screw comprising:

a healing abutment head, wherein the head has a straight wall design;

a threaded shaft for anchoring the screw in the bone, wherein an outer diameter of the shaft is about 2.0 mm or less and an inner diameter of the shaft is about 1.8 mm or less, and the inner diameter is less than the outer diameter; and

a tip adapted to penetrate bone tissue.

2. A temporary implantable screw of claim 1, wherein the screw comprises titanium.

3. A temporary implantable screw of claim 1, wherein the head of the screw has a height of about 3 mm to about 5 mm.

4. A temporary implantable screw of claim 1, wherein the head of the screw has a consistent diameter of about 3 mm to about 6 mm along the height of the screw.

5. A temporary implantable screw of claim 1, wherein a length of the shaft ranges from about 8 mm to about 17 mm, and wherein a threading pitch of the shaft allows the screw to stabilize in bone after engagement of about 3 mm to about 4 mm of bone.

6. A temporary implantable screw of claim 1, wherein the shaft is threaded on an apical coronal region so the length of the shaft is completely threaded or the length of the shaft is not completely threaded.

7. A temporary implantable screw of claim 1, wherein the screw is coated with a material for growing bone.

8. A temporary implantable screw of claim 1, wherein the screw supports a bone graft material.

9. A temporary implantable screw of claim 1, wherein the screw comprises a tip adapted for self-drilling.

10. A temporary implantable screw for preserving the integrity of an oral socket, the screw comprising:

a healing abutment head, wherein the head has a flared design;

a threaded shaft for anchoring the screw in the bone, wherein an outer diameter of the shaft is about 2.0 mm or less and an inner diameter of the shaft is about 1.8 mm or less, and the inner diameter is less than the outer diameter; and

a tip adapted to penetrate bone tissue.

11. A temporary implantable screw of claim 10, wherein the screw comprises titanium.

12. A temporary implantable screw of claim 10, wherein the head of the screw has a height of about 3 mm to about 5 mm.

13. A temporary implantable screw of claim 10, wherein the head of the screw has a diameter of about 3 mm to about 6 mm at a bottom base of the head.

14. A temporary implantable screw of claim 13, wherein the diameter of the head increases by 1, 1.5, or 2 mm at a top surface of the head relative to the bottom base.

15. A temporary implantable screw of claim 10, wherein a length of the threaded shaft ranges from about 8 mm to about 17 mm, and wherein a threading pitch of the threaded shaft allows the screw to stabilize in bone after engagement of about 3 mm to about 4 mm of bone.

16. A temporary implantable screw of claim 10, wherein the shaft is threaded on an apical coronal region so the length of the shaft is completely threaded or the length of the shaft is not completely threaded.

17. A temporary implantable screw of claim 10, wherein the screw is coated with a material for growing bone.

18. A temporary implantable screw of claim 10, wherein the screw supports a bone graft material.

19. A temporary implantable screw of claim 10, wherein the screw comprises a tip adapted for self-drilling.

20. A method of preserving an oral socket comprising:

implanting a temporary implantable device into an oral socket in a jawbone of a patient, wherein the implantable device comprises at least one implantable screw, the screw comprising a healing abutment head wherein the head ranges in height from about 3 mm to about 5 mm and ranges in diameter at a base of the head from about 3 mm to about 6 mm, a threaded shaft connected to the head and adapted for anchoring the screw in the jawbone, wherein the shaft has an outer diameter of about 2.0 mm or less and a length of about 8 mm to about 17 mm, and a tip connected to the threaded shaft and adapted to penetrate bone tissue;

incorporating a bone growth material on or near the screw; and

removing the implantable device prior to placement of a dental implant.