초록 ▼

There is provided a mixture which preferably is a colloidal suspension of finely divided particles of a rare-earth oxide such as cerium oxide in a liquid. The liquid may be all water but also may include other materials such as acetic acid, 1,3-butanediol, methanol. The mixture is used as a wetting

There is provided a mixture which preferably is a colloidal suspension of finely divided particles of a rare-earth oxide such as cerium oxide in a liquid. The liquid may be all water but also may include other materials such as acetic acid, 1,3-butanediol, methanol. The mixture is used as a wetting and suspending agent for opaque and build-up dental porcelains to primarily overcome the problem of discoloration of the porcelains when used with metal substrates made of dental alloys containing silver, and also to make the porcelains easier to handle and to work with.

대표청구항 ▼

A method of fabricating an artificial tooth fused to a metal substrate comprising the steps of: mixing a concentrated colloidal suspension of a rare-earth oxide with water thereby forming a diluted colloidal suspension of said rare-earth oxide; said rare-earth oxide in said diluted colloidal suspens

A method of fabricating an artificial tooth fused to a metal substrate comprising the steps of: mixing a concentrated colloidal suspension of a rare-earth oxide with water thereby forming a diluted colloidal suspension of said rare-earth oxide; said rare-earth oxide in said diluted colloidal suspension being in the range of from 0.02% to 0.8% weight of said diluted colloidal suspension; combining said diluted colloidal rare-earth oxide suspension with porcelain into a workable consistency; applying a portion of the porcelain/rare-earth oxide mixture to a metal substrate; forming a tooth on the substrate with the porcelain/rare-earth oxide mixture; fusing the porcelain/rare-earth oxide mixture to the metal substrate with heat; said tooth not being substantially discolored during said fusing.