Shiken Corporation

Fuji Manufacuturing Co., Ltd.

Takahiro Shima

Keiji Mase

Shozo Ishibashi

An artificial toothto be polished is fixed at a tooth neckside and rotated about a tooth axis. Abrasives, preferably elastic abrasives formed by kneading abrasive grains into or supporting abrasive grains on an elastic material, are ejected together with a compressed gas at an ejection pressure of from 0.1 MPa to 0.5 MPa onto an occlusal portionside of the artificial toothwhile the artificial toothis being rotated. The abrasives are ejected at an inclination angle &#x3b8; with respect to the tooth axisof the artificial toothof from 0&#xb0; to 90&#xb0;, and preferably from 15&#xb0; to 75&#xb0;. Portions on the occlusal portionand side surfacesof the artificial toothare thereby polished at the same time by the abrasive sliding over these portions.

Method for polishing artificial tooth and device for polishing artificial tooth

The denture has the root of an artificial tooth embedded in a denture base molded from plastic. The artificial tooth is provided with a through-hole in the root that fills with denture base plastic, and the openings at both ends of the through-hole are embedded in the denture base. Further, both ends of the through-hole open at artificial tooth surfaces that face adjacent teeth, and an air-vent is provided that connects with the through-hole. The opening for the air-vent is positioned on a lingual side surface of the artificial tooth that is exposed from the denture base. Plastic that forms the denture base flows into the through-hole and air-vent embedding and retaining the root of the artificial tooth in the denture base.

Growing community of inventors

Tokushima, Japan

Takahiro Shima