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. 03, 1998
Filed:
May. 20, 1997
Craig A Andreiko, Alta Loma, CA (US);
David L Ludwig, San Juan Capistrano, CA (US);
Ormco Corporation, Orange, CA (US);
Abstract
This invention is directed to a plastic orthodontic appliance having projecting structure extending outwardly from a bonding base. The projecting structure includes a broadened outer extremity and undercuts proximate the outer extremity which form mechanical bonds with a bonding adhesive. In one application, a plurality of appliances in the form of slotted brackets is provided for cooperating with an archwire to apply corrective forces to a patient's teeth on which the brackets are mounted. Another aspect of the invention concerns a method of making plastic orthodontic appliances suitable for mechanical bonding. The method includes molding a plastic orthodontic appliance having undeformed projecting structure and subsequently softening and compressing the outer extremity of the projecting structure to form undercuts. In a preferred embodiment, the projecting structure is a plurality of posts.