COMPANION ENGINEERING AND MANUFACTURING PROCESSES (CEMP) TO OPTIMIZE MULTI-LAYERED ZIRCONIA CROWNS
A companion engineering and manufacturing process to optimize multi-layered zirconia crowns, and improved substructure are provided.
1 . A method of manufacturing a dental restoration comprising the steps of:
providing a structural body for the restoration that includes at least one support structure located along a side wall of the structural body at a location spaced from, but generally near, an occlusal end of the substructure body;
veneering the structural body with veneering material having an ideal thermal expansion coefficient that is generally ≦1.0×10 −6 /° C. of the structural body material to form a first modifier layer; and
veneering the structural body with one or more successive layers of veneering material;
firing said veneering layers at an ideal temperature that is preferably slightly less than the recommended high firing temperature;
withdrawing the structural body from said firing step through a rapid cool-down protocol.
2 . The method as claimed in claim 1 wherein said modifier layer includes a special effect-shading that enhances the aesthetic appearance of the veneer.
3 . The method as claimed in claim 1 wherein the structural body comprises a Zirconia material.