| 摘要 |
PURPOSE: A process of preparing laminated paste for a dental crown by mixing ceramic powders for dental crown added by aqueous additives each other and then laminating a paste according to the order of dental crown forming layers is provided. It solves environmental difficulties generated from manual working and improves its quality. CONSTITUTION: A paste obtained by adding a liquid additive to dental powder for artificial crown is laminated in the order of each part consisting of the crown of a tooth. The liquid additive is one of polyetherpolyol, polyhydric alcohol, formaldehyde, alkanolamine, polyvinylether, nonionic surfactant or mixtures thereof. The polyhydric alcohol is propylene glycol or ethylene glycol. The crown is composed of an opaque material(20), dentin material(25), enamel material(30) and transparent material.
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