Patent ID: 8070842

Claim:
A dental polishing article which comprises a polishing portion formed by compounding polishing grains in an elastomer binder, and the polishing portion further comprising spherical resin particles having circularity within a range from 0.9 to 1.0, the circularity e being represented by the expression: e =(4 Â·Ï€Â·S )/( L 2 ) wherein S denotes an area of the particle and L denotes a perimeter of the particle, wherein the polishing portion contains 50 to 200 parts by weight of polishing grains having a particle size of 1 to 6 Î¼m and 50 to 150 parts by weight of spherical resin particles having a particle size of 10 to 100 Î¼m relative to 100 parts by weight of the binder or wherein the polishing portion contains 50 to 200 parts by weight of polishing grains having a particle size of 10 to 20 Î¼m and 50 to 150 parts by weight of spherical resin particles having a particle size of 0.5 to 10 Î¼m relative to 100 parts by weight of the binder, and wherein the polishing grains are diamond grains and the spherical resin particles are acrylic, styrene, nylon, polyethylene, phenol, melamine, or urethane resin particles.