METHOD FOR PRODUCTION OF DENTAL PROSTHESIS, METHOD FOR PRODUCTION OF WORKPIECE FROM LITHIUM DISILICATE FOR DENTAL PROSTHESIS AND WORKPIECE FROM LITHIUM DICUMATE FOR DENTAL PROSTHESIS

摘要

FIELD: manufacturing technology.;SUBSTANCE: group of inventions relates to a method for manufacturing a dental prosthesis, to a method of producing a workpiece from lithium disilicate for a denture, to be treated on a machine in the form of a denture, as well as to a corresponding workpiece from lithium disilicate, to be treated on the machine in the form of a dental prosthesis. Method for manufacturing a dental prosthesis comprises a step of melting material, comprising at least 60.0 wt % and not more than 80.0 wt % SiO₂, not less than 10.0 wt % and not more than 20.0 wt % Li₂O, not less than 5.1 wt % and not more than 10.0 wt % Al₂O₃ and containing not less than greater than 3.1 wt % and not more than 10.0 wt % ZrO₂; step of producing a glass workpiece by cooling the molten material to solidify said material and producing a workpiece without sputtering the hardened material; step of producing a workpiece from lithium disilicate by heating the glass workpiece to obtain a workpiece, the main crystalline phase of which is lithium disilicate; as well as a step of processing a workpiece from lithium disilicate by mechanical treatment with formation of a denture, which can be carried out without thermal treatment.;EFFECT: using the group of inventions provides fast production of the dental prosthesis with high accuracy.;9 cl, 2 dwg, 1 tbl, 15 ex