Method to increase the strength of a form body of a lithium silicate glass ceramic

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United States of America

PATENT NO 11370702
APP PUB NO 20160340237A1
SERIAL NO

15160432

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Abstract

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The invention relates to a method to derive a medical form body of lithium silicate glass ceramic. To increase its strength it is proposed that in the form body comprising lithium silicate glass or containing lithium silicate glass the lithium ions are replaced by alkali ions of greater diameter to generate a surface compressive stress. To this end the form body is covered with a melt containing an alkali metal for which an aliquoted quantity of salt containing the alkali metal is used.

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Patent Owner(s)

Patent OwnerAddress
DENTSPLY SIRONA INC221 W PHILADELPHIA STREET SUITE 60W YORK PA 17401

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fecher, Stefan Johannesberg, DE 39 246
Völkl, Lothar Goldbach, DE 15 16

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