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Our Technology

The ideal material : fused silica

All our crucibles are essentially made of fused silica, which is nothing else than high purity quartz sand, melted at a temperature over 2000°C.

Fused silica has very interesting features that fully justify its use in the manufacturing of dental crucibles :

  • A very low expansion rate that makes it incredibly resistant to thermal shocks.
  • A low sensitivity to metal oxides which ensures long lasting resistance to dental alloys corrosion.

Over 15 years ago, our company initiated, in Europe, the use of fused silica in dental crucibles. Today, this material is commonly used because it enables to notably increase the life span of crucibles.

Céramiques et Réfractaires is constantly looking for even more effective materials. Studies have been and still are conducted everyday for 15 years to offer the best quality of crucibles on the market.

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Features and uses of our crucibles for flame fusion

  • All our crucibles for flame fusion are made in fused silica.

Areas of application :

  • Any type of dental alloys can be cast in them, except titanium.

Safety instructions :

  • No particular care needs to be taken and the inside glazing of the crucible before it is first heated, is not necessary. The glazing will automatically take place after the first casts.
  • The flame fusion crucibles do not need to be preheated in cylinder furnaces before casting.

Their life span is around a hundred casts.

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Technical features of our crucibles for electronic casting machines

  Version simple Version zircone Version nitrure Version NV3
  SIMPLE Version ZIRCONIA version NITRIDE version NV3 version
Thermal shock resistance Very good Very good Very good Excellent
Adhesion of dental alloys Normal Very low Very low Very low
Recommanded for these alloys Ni-Cr, Cr-Co Ni-Cr, Cr-Co
palladium alloys		 Ni-Cr, Cr-Co
palladium alloys		 Ni-Cr, Cr-Co
palladium alloys
Number of casts about 15 in Cr-Co about 30 in Cr-Co about 35 in Cr-Co about 50 in Cr-Co
Comments The most economical Good value for money Very good value for money Excellent value for money

 

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CERAMIQUES ET REFRACTAIRES - 82, route de Langon BP 29 41201 Romorantin Cédex
Phone :+33 (0)2 54 76 65 45 - Fax : +33 (0)2 54 76 80 25 - Email : ceramiques.refractaires@wanadoo.fr