Lithium disilicate glass-ceramics

  • US 20030073563A1
  • Filed: 06/25/2002
  • Published: 04/17/2003
  • Est. Priority Date: 12/11/1998
  • Status: Active Grant
First Claim
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1. A method of making a lithium disilicate dental product comprising:

  • melting a starting glass composition at temperatures within the range of about 1200 to about 1600°

    C.;

    forming the molten glass into shaped blanks;

    annealing the glass blanks at temperatures in the range of 300°

    to about 600°

    C. for a time in the range of about 15 minutes to about 8 hours;

    subjecting the glass blanks to one or more heat treatments in the temperature range of from about 400°

    to about 1100°

    C. to convert the glass blanks into glass-ceramic blanks.

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