Procedure for firing dental porcelain on metal

Details Procedure for firing dental porcelain on metal Procedure for firing dental porcelain on metal

A - Human Necessities

61

C

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A61C 13/09 (2006.01) A61C 13/20 (2006.01) C04B 33/32 (2006.01) C23D 13/00 (2006.01) F27B 14/20 (2006.01) F27B 17/02 (2006.01)

Patent

CA 1214692

ABSTRACT Disclosed is a method for producing dental prostheses of the dental porcelain fused to metal type, in particular, the temperatures employed to fire and cool the prostheses are disclosed with a new tempering temperature disclosed during cool down. The tempering temperature is preferably the temperature with approximately the maximum rate of crystallization of the ceramic phase from the glass phase of the feldspathic dental porcelain. A furnace is also disclosed having a heatable firing chamber, a firing platform, a firing platform socket, and control means that include a means for positioning the platform and adjusting the temperature. The furnace control means is programmed by a keyboard feeding a microcomputer, which controls separate programmable elements to control the furnace.

435141

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