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:
Dec. 07, 1993
Filed:
Dec. 18, 1992
Lee H Tuneberg, Sheboygan, WI (US);
American Orthodontics Corporation, Sheboygan, WI (US);
Abstract
A bonding base and method of making the base for a plastic orthodontic bracket to provide a mechanical lock that inhibits both shear and tensile forces when bonded to a tooth with a mechanical bonding adhesive. The bonding base includes a coating or layer of thermoset epoxy, urethane or acrylate chemistry having partially embedded therein a layer of textured particles that define multi-directional undercuts and projections. The method of making the bonding base includes the steps of applying a substantially uniform in thickness coating of the chosen chemistry to the tooth-attaching side of the bracket, next applying a layer of textured particles to the coating while it is wet, and then curing the coating to lock the textured particles to the bracket for producing a textured mechanical lock.