The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 1997
Filed:
May. 30, 1995
Applicant:
Inventors:
Rohit Chaman Sachdeva, Plano, TX (US);
Farrokh Farzin-Nia, Inglewood, CA (US);
Assignee:
Ormco Corporation, Glendora, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61C / ;
U.S. Cl.
CPC ...
433 20 ; 433 24 ;
Abstract
Orthodontic archwires and methods of making such archwires. The archwire includes a shape memory alloy having a preset shape for exerting forces on teeth during orthodontic treatment. The alloy, which preferably is comprised of at least three elements (e.g., Ni, Ti and Cu), has a transformation temperature (A.sub.f) greater than about 25.degree. C., whereby the orthodontic archwire produces forces at normal mouth temperature which are greater than the forces produced at normal room temperature. The orthodontic archwire also preferably has a variable modulus of elasticity.