Novel process for producing coping and bridge of porcelain teeth

Abstract

The invention provides a novel process for producing a coping and bridge of porcelain teeth. The process is characterized by comprising the steps of manufacturing a patient oral cavity plaster model, and manufacturing a blank by adopting a dental powder metallurgic material; performing 3D scanning to the oral cavity plaster model by utilizing a dental scanner to form a model file; processing the model file in a dental CAD (computer-aided design) software environment to form a dental form design file; milling and grinding the blank by adopting a numerical control processing center according to the dental form file to form the coping and bridge of a porcelain tooth; finally, performing high-temperature solid-phase sintering to form a final porcelain tooth. Compared with the prior art, the novel process provided by the invention has the advantages that the working efficiency is improved, the cost is reduced, energy is saved, and the environment is protected.

Description

technical field [0001] The present invention relates to a kind of production technique of porcelain-fused-to-metal tooth base crown, bridge, especially a kind of application (Computer Aided Design and Computer Aided Manufacture, hereinafter referred to as CAD) of the material prepared by powder metallurgy process in computer design and computer aided manufacture / CAM). Background technique [0002] In order to manufacture dental prosthetic components such as base crowns and bridges of porcelain teeth, wax-melting precision casting is mainly used in the existing dental restoration process. Shaped wax mold, its shape is equivalent to the object to be cast. Then use the wax model to form a cavity in the mold, and finally realize it by centrifugal casting after high-temperature melting of the metal. The wax-melting method for precision casting to manufacture the metal base crowns of porcelain teeth, dental bridges and other prosthetic components consumes a lot of energy and req...

AI Technical Summary

Problems solved by technology

Then use the wax model to form a cavity in the mold, and finally realize it by centrifugal casting after high-temperature melting of the metal. The wax-melting method for precision casting to manufacture the metal base crowns of porcelain teeth, dental bridges and other prosthetic components consumes a lot of energy and requires equipment investment. Many, high material consumption, many and complex processes and very high requirements for manual operation skills, the qualified rate of finished products is relatively low, so the cost remains high, and the product quality cannot be fully guaranteed