Method of preparing a ceramic artificial crown and a preparation kit used therefor

摘要

A method of preparing a ceramic artificial crown by applying at least one kind of dental porcelain selected from the group consisting of a body porcelain, an incisal porcelain and a translucent porcelain onto the surface of a ceramic core molded by heating and softening a ceramic material and putting it into a mold with the application of a pressure followed by firing; wherein said mold is the one formed by burning a wax pattern after having removed a crucible former from an assembly which comprises: said crucible former having a pole member formed on the central portion of a cylinder with bottom, said pole member having a recessed fitting portion at a central portion in the upper surface thereof; said wax pattern secured to said recessed fitting portion and applied with a solid lubricant on the surface thereof; a ring with a backing layer that engages with said cylinder with bottom; and a investment material filled and cured between said ring and a tooth model; and wherein a portion corresponding to the pole member of the crucible former of said mold is filled with a ceramic material which is, then, pushed by a plunger to mold a ceramic core. This method makes it possible to efficiently prepare a fully ceramic artificial crown of a high quality in a short period of time.