Process for producing a prosthetic tooth inlay or a prosthetic tooth crown

摘要

A process for manufacturing a prosthetic dental inlay or prosthetic dental crown (1), or prosthetic dental bridge for fitting in a pre-prepared tooth cavity or on a pre-prepared stump (4), involves the following steps: the three-dimensional profile of the cavity or stump (4) is determined; a three-dimensional template for the inlay or crown, magnified by a predetermined factor, is made from a pre-treated prosthetic dental material and further treated to shrink it to dimensions matching those of the cavity or stump (4). A working stump, magnified by the predetermined factor and in shape matching the three-dimensional profile of the cavity or stump (4), is produced from a material with more or less the same shrinkage factor as the prosthetic tooth material. The working stump is placed in the template for further treatment, the template being stabilised during the treatment. After the treatment, the working stump is separated from the template. The prosthetic tooth material and, if required, the material for the working stump is an oxide ceramics, specifically a zirconium oxide or aluminium oxide ceramics, or oxyde ceramics alloys.