DENTAL ASSEMBLY AND PROCESS FOR PREPARING A TOOTH PROSTHESIS

DENTAL ASSEMBLY AND PROCESS FOR PREPARING A TOOTH PROSTHESIS
Canadian intellectual Property Patent Database
CA Patent Number: CA 2241926
Publication Date: July 17, 1997
Inventors (Country): LAZAROF, SARGON (United States)
Owners (Country): LAZAROF, SARGON (United States)
Applicants (Country): LAZAROF, SARGON (United States)
Agent: GOWLING LAFLEUR HENDERSON LLP
Issued: May 23, 2000
PCT Filing Date: Nov. 14, 1996
PCT Publication Date: July 17, 1997
Examination requested: June 29, 1998
International Class (IPC): A61C 8/00
Patent Cooperation Treaty (PCT): Yes (85) National Entry: June 29, 1998
PCT Filing number: PCT/US1996/018574
International publication number: WO1997/024996
Abstract:
A dental assembly includes an implant (50) having a tubular body portion (56) which can be positively secured within a bore (58) in a jawbone (60) by an expander mechanism (68, 70), and a two-piece abutment (98, 100) secured to the implant (50) and having a collar (100) which is incapable of rotation with respect thereto. In a related process for preparing a tooth prosthesis, a transfer sleeve (154) is utilized in a process to replicate conditions in the mouth, including the configuration of the abutment assembly (52), in manufacturing a custom analog. A custom analog is cast into a stone mold (182) to provide an exact duplicate of the mouth. From this stone mold (182) a crown
(214) can be manufactured in a laboratory to precisely fit in the user's mouth over a customized abutment. A treatment crown sleeve (144) may be utilized in connection with a provisional tooth (202).