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:
Feb. 07, 1984
Filed:
Sep. 21, 1982
David E Webb, Jamul, CA (US);
Lawrence F Andrews, San Diego, CA (US);
Johnson and Johnson, New Brunswick, NJ (US);
Abstract
An orthodontic bracket assembly for bonding to the surface of a tooth is disclosed. The assembly includes a pad and an archwire bracket. A plurality of cavities are provided in the tooth abutting surface of the pad. The walls of the cavities are provided with an irregular surface texture to enhance the bonding between the tooth and the orthodontic bracket. In the preferred embodiment the bracket is cast. The external surface of the bracket is smoothed in a tumbling operation in which the particle size of the abrasive is chosen so that the cavity walls are not subjected to treatment but are left in their irregular, as-cast state. Also disclosed is a method for preparing the mold to produce the cavities in the tooth-abutting surface of the pad.