Patent ID: 8871132
Filing Date: 2014-10-28
Classification: A61C,B28B,B29C,C04B,Y10T

Abstract:
1. A method of manufacturing an orthodontic bracket comprising: forming an initial green body by molding a mixture of sinterable particles and organic binder into a desired shape corresponding to at least a portion of an orthodontic bracket, wherein the sinterable particles include at least one of metal particles or ceramic particles; and roughening a surface portion of the initial green body by removing sinterable particles from the initial green body using at least one of a stream of energy or a stream of matter to yield a plurality of macro-protrusions, macro-recesses, and macro-undercuts and that further includes a plurality of micro-protrusions, micro-recesses, or micro-undercuts superimposed on the macro-protrusions, macro-recesses, or macro-undercuts, wherein the macro-protrusions, macro-recesses, or macro-undercuts define an irregular and uneven surface on the initial green body.