LITHIUM SILICATE GLASS CERAMICS AND LITHIUM SILICATE GLASSES COMPRISING DIVALENT METAL OXIDE

• Main Authors: APEL ELKE, RITZBERGER CHRISTIAN, HOELAND WOLFRAM, RHEINBERGER VOLKER DR
• Format: Patent
• Language: English; Japanese
• Published: 07.12.2017
• Subjects: APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; DENTISTRY; GLASS; HUMAN NECESSITIES; HYGIENE; JOINING GLASS TO GLASS OR OTHER MATERIALS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MINERAL OR SLAG WOOL; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

PROBLEM TO BE SOLVED: To provide lithium silicate glass ceramics during the preparation of which the crystallization of lithium disilicate can be effected at lower temperatures.SOLUTION: Lithium silicate glass ceramics and glasses containing specific oxides of divalent elements are described which crystallize at low temperatures and are suitable in particular for dental materials. The lithium silicate glass ceramics and glasses comprise a divalent metal oxide selected from MgO, SrO, CaO, BaO, ZnO and mixtures thereof, and are particularly suitable for use in dentistry, preferably for the preparation of dental restorations.SELECTED DRAWING: None 【課題】ケイ酸リチウムガラスセラミック調製中に、二ケイ酸リチウムの結晶化をより低い温度で行うことができるようなケイ酸リチウムガラスセラミックが必要であること。【解決手段】低温で結晶化し、特に歯科材料に適した特定の二価元素の酸化物を含有するケイ酸リチウムガラスセラミックおよびガラスが記載されている。本発明は、ＭｇＯ、ＳｒＯ、ＣａＯ、ＢａＯ、ＺｎＯおよびこれらの混合物から選択される二価の金属酸化物を含有し、特に、歯科で使用するのに適しており、好ましくは、歯修復物の調製に適したケイ酸リチウムガラスセラミックおよびガラスに関する。【選択図】なし