Process for preparing a tooth prosthesis for attachment to an abutment within a mouth of a patient

• US 5,762,500 A
• Filed: 04/07/1997
• Issued: 06/09/1998
• Est. Priority Date: 01/05/1996
• Status: Expired due to Fees

• Current Assignee: The Sargon Lazarof and Monalisa Family Trust
• Original Assignee: Sargon Lazarof
• Inventors: Lazarof, Sargon
• Primary Examiner(s): LEWIS, RALPH A
• Application Number:
  US08/827,901
• Time in Patent Office: 428 Days
• Field of Search: 433/173, 433/174, 433/213, 433/214, 433/223
• US Class Current: 433/213
• CPC Class Codes: A61C 8/0001 Impression means for implants, e.g. impression coping
• CPC Class Codes: A61C 8/0033 Expandable implants; Implants with extendable elements
• CPC Class Codes: A61C 8/005 Connecting devices for joining an upper structure with an implant member, e.g. spacers
• CPC Class Codes: A61C 8/0054 having a cylindrical implant connecting part
• CPC Class Codes: A61C 8/0057 with elastic means
• CPC Class Codes: A61C 8/006 with polygonal positional means, e.g. hexagonal or octagonal
• CPC Class Codes: A61C 8/0065 with expandable or compressible means
• 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 8/0069 tapered or conical connection

Abstract

A dental assembly includes an implant having a tubular body portion which can be positively secured within a bore in a jawbone by an expander mechanism, and a two-piece abutment secured to the implant and having a collar which is incapable of rotation with respect thereto. In a related process for preparing a tooth prosthesis, a transfer sleeve is utilized in a process to replicate conditions in the mouth, including the configuration of the abutment assembly, in manufacturing a custom analog. A custom analog is cast into a stone mold to provide an exact duplicate of the mouth. From this stone mold a crown can be manufactured in a laboratory to precisely fit in the user'"'"'s mouth over a customized abutment. A treatment crown sleeve may be utilized in connection with a provisional tooth.

Claims

1. A process for preparing a tooth prosthesis for attachment to an abutment within a mouth of a patient, comprising the steps of:

placing a transfer sleeve over the abutment;

taking an impression of the mouth, wherein the transfer sleeve is transferred to the impression;

using an impression sleeve to take an impression of the abutment;

filling the impression of the abutment in the impression sleeve with a composite material and then seating the impression sleeve on an implant analog;

removing the impression sleeve and its impression material from the implant analog to produce a custom analog which is a duplicate of the abutment;

placing the custom analog into the impression of the mouth through the transfer sleeve;

creating a stone mold of the mouth utilizing the impression of the mouth having the inserted custom analog; and

utilizing the stone mold to form the tooth prosthesis.

2. The process of claim 1, including the step of preventing relative rotation of the transfer sleeve relative to the abutment.

3. The process of claim 2, wherein during the step of using an impression sleeve to take an impression of the abutment, the impression sleeve locks onto the abutment in the same manner as the transfer sleeve.

4. The process of claim 3, wherein during the step of placing the custom analog into the impression of the mouth through the transfer sleeve, the transfer sleeve locks onto the custom analog in the same manner that it locks onto the abutment to prevent relative rotation thereof.

5. The process of claim 4, wherein the step of utilizing the stone mold to form the tooth prosthesis includes the further steps of:

placing a waxing sleeve over the custom analog extending from the stone mold;

filling the waxing sleeve with a wax;

preparing a wax-up of the crown to be formed over the waxing sleeve;

removing the wax-up and the waxing sleeve from the stone mold;

investing the wax-up with the embedded waxing sleeve in a stone mold; and

casting a tooth prosthesis from the stone mold formed from the wax-up and the waxing sleeve.

6. The process of claim 5, wherein the waxing sleeve locks onto the custom analog in the same manner that the transfer sleeve locks onto the abutment.

7. The process of claim 1, wherein the tooth prosthesis is attached to the abutment utilizing an adhesive.

8. The process of claim 1, including the step of plating a portion of the abutment with a gold-colored material.

9. The process of claim 8, wherein the gold-colored material is titanium nitride.

10. The process of claim 1, wherein after the step of using an impression sleeve to take an impression of the abutment, a provisional tooth is secured in place over the abutment.

11. The process of claim 10, wherein the step of providing a provisional tooth includes the steps of:

placing a treatment crown sleeve over the abutment;

filling a denture tooth with a composite material; and

placing the composite filled denture tooth over the treatment crown sleeve.

12. The process of claim 11, wherein the treatment crown sleeve is plated with titanium nitride.

13. A process for preparing a prosthesis for attachment to a bone-anchored abutment extending from a body portion of a patient, comprising the steps of:

placing a transfer sleeve over the abutment;

taking an impression of the body portion of the patient surrounding the abutment, wherein the transfer sleeve is transferred to the impression;

using an impression sleeve to take an impression of the abutment;

filling the impression of the abutment in the impression sleeve with a composite material and then seating the impression sleeve on an implant analog;

removing the impression sleeve and its impression material from the implant analog to produce a custom analog which is a duplicate of the abutment;

placing the custom analog into the impression of the body portion of the patient surrounding the abutment through the transfer sleeve;

creating a stone mold of the body portion of the patient surrounding the abutment utilizing the impression of the body portion of the patient surrounding the abutment having the inserted custom analog; and

utilizing the stone mold to form the prosthesis.

14. The process of claim 13, including the step of preventing relative rotation of the transfer sleeve relative to the abutment, and wherein during the step of using an impression sleeve to take an impression of the abutment, the impression sleeve locks onto the abutment in the same manner as the transfer sleeve.

15. The process of claim 14, wherein during the step of placing the custom analog into the impression of the body portion of the patient surrounding the abutment through the transfer sleeve, the transfer sleeve locks onto the custom analog in the same manner that it locks onto the abutment to prevent relative rotation thereof.

16. The process of claim 13, wherein the step of utilizing the stone mold to form the prosthesis includes the further steps of:

placing a waxing sleeve over the custom analog extending from the stone mold;

filling the waxing sleeve with a wax;

preparing a wax-up of a crown to be formed over the waxing sleeve;

removing the wax-up and the waxing sleeve from the stone mold;

investing the wax-up with the embedded waxing sleeve in a stone mold; and

casting a prosthesis from the stone mold formed from the wax-up and the waxing sleeve.

17. The process of claim 16, wherein the waxing sleeve locks onto the custom analog in the same manner that the transfer sleeve locks onto the abutment.

18. The process of claim 13, wherein the prosthesis is attached to the abutment utilizing an adhesive.

19. The process of claim 13, including the step of plating a portion of the abutment with a gold-colored titanium nitride material.

20. The process of claim 13, wherein, when the process is utilized to prepare a tooth prosthesis for attachment to an abutment within a mouth of the patient, after the step of using an impression sleeve to take an impression of the abutment, a provisional tooth is secured in place over the abutment including the steps of:

placing a treatment crown sleeve over the abutment;

filling a denture tooth with a composite material; and

placing the composite filled denture tooth over the treatment crown sleeve.

21. A process for preparing a tooth prosthesis for attachment to an abutment within a mouth of a patient, comprising the steps of:

placing a transfer sleeve over the abutment;

taking an impression of the mouth, wherein the transfer sleeve is transferred to the impression;

using an impression sleeve to take an impression of the abutment;

filling the impression of the abutment in the impression sleeve with a composite material and then seating the impression sleeve on an implant analog;

removing the impression sleeve and its impression material from the implant analog to produce a custom analog which is a duplicate of the abutment;

placing the custom analog into the impression of the mouth through the transfer sleeve;

creating a stone mold of the mouth utilizing the impression of the mouth having the inserted custom analog; and

utilizing the stone mold to form the tooth prosthesis, including the further steps of;

placing a waxing sleeve over the custom analog extending from the stone mold;

filling the waxing sleeve with a wax;

preparing a wax-up of a crown to be formed over the waxing sleeve;

removing the wax-up and the waxing sleeve from the stone mold;

investing the wax-up with the embedded waxing sleeve in a stone mold; and

casting a tooth prosthesis from the stone mold formed from the wax-up and the waxing sleeve.

22. The process of claim 21, including the step of preventing relative rotation of the transfer sleeve relative to the abutment, wherein during the step of using an impression sleeve to take an impression of the abutment, the impression sleeve locks onto the abutment in the same manner as the transfer sleeve, wherein during the step of placing the custom analog into the impression of the mouth through the transfer sleeve, the transfer sleeve locks onto the custom analog in the same manner that it locks onto the abutment to prevent relative rotation thereof, and wherein the waxing sleeve locks onto the custom analog in the same manner that the transfer sleeve locks onto the abutment.

23. The process of claim 21, wherein the tooth prosthesis is attached to the abutment utilizing an adhesive.

24. The process of claim 21, wherein after the step of using an impression sleeve to take an impression of the abutment, a provisional tooth is secured in place over the abutment, including the steps of placing a treatment crown sleeve over the abutment, filling a denture tooth with a composite material, and placing the composite filled denture tooth over the treatment crown sleeve, wherein the treatment crown sleeve is plated with titanium nitride.