Patent ID: 6098906
Filing Date: 2000-08-08
Classification: A61C,B02C

Abstract:
A method for efficiently grinding submicron-sized dental filler particulate of high purity, comprising the steps of:providing a vibratory mill having a grinding chamber;charging the grinding chamber with glass beads having a diameter in the range of about 0.1 mm to about 10.0 mm and a refractive index of about 1.46 to about 1.56;charging the grinding chamber with a wet slurry containing the dental filler particulate to be ground, the particulate having a refractive index of about 1.48 to about 1.55;vibrating the grinding chamber for a time sufficient to grind the particulate to a mean particle size of about 0.05 .mu.m to about 0.50 .mu.m; andseparating the slurry from the milling media.