DENTSPLY SIRONA Inc.
METHOD TO INCREASE THE STRENGTH OF A FORM BODY OF LITHIUM SILICATE GLASS CERAMIC

Abstract:

The invention relates to a medical form body of lithium silicate glass ceramic. To increase its strength it is proposed that a surface compressive stress is created in a form body of lithium silicate glass, or containing lithium silicate glass, through the replacement of lithium ions by alkali metal ions of greater diameter. For this purpose the form body is covered with a paste that contains alkali metal.