Method of cleaning and surface processing of inorganic filler utility

Abstract

A method of cleaning of an inorganic filler, upon which the inorganic filler used in resin materials for industrial or biological use, particularly dental resin restorative materials, can be more firmly bound to a resin matrix as a substrate, as well as a method of surface processing of the inorganic filler, are provided. The inorganic filler surface is cleaned with an aqueous solution of a peroxo acid and/or a peroxo acid salt, washed with water, and then cleaned with an organic solvent. Further, the cleaned inorganic filler is subjected to a silane coupling processing, thereby the inorganic filler being processed.

Dependencies are inferred from the claim text.