Lithium silicate glass ceramic for fabrication of dental appliances
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United States of America Patent
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Dec 3, 2009
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Apr 11, 2008
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Abstract
The present invention relates to preparing an improved lithium silicate glass ceramic for the manufacture of blocks for dental appliance fabrication using a CAD/CAM process and hot pressing system. The lithium silicate material has a chemical composition that is different from those reported in the prior art with 1 to 10% of germanium dioxide in final composition. The softening points are close to the crystallization final temperature of 830° C. indicating that the samples will support the temperature process without shape deformation.
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