USES OF DENTAL PRORCELAIN Flashcards
4 fabrications of PFM restoration
Casting of metal structure or coping
Bonding of porcelain
Degassing
Sintering
Thickness of porcelain in casting of metal structure
Less than 0.5mm thick
Removes impurities of alloy
Degassing
Forms oxide layer
Degassing
Firing of porcelain paste on metal by heating porcelain on oven
Sintering
4 layering of porcelain
Opaque
Gingival
Glaze
Characterization
Hides metallic color
Opaque
Mimics dentin of tooth
Gingival
Final porcelain layer; provides polished surface
Glaze
Add surface stains or cracks
Characterization
IT IS AN: Aluminous or Magnesia based porcelain Glass-infiltrated aluminous porcelain Castable Porcelain and Press Porcelain
Core porcelain
Term for crystallized after casting in oven
Ceramming
Used To attain a specific shade
Glaze material
Layer of material placed over a tooth
Veneers
2 types of material used to fabricate veneer
Composite and dental porcelain
is usually an indirect restoration consisting of a solid substance fitted to a cavity in a tooth and cemented into place.
Inlay
Replacement for a tooth cusp
Onlay
Cover all surfaces
Crowns
Transmits more occlusal force to residual bone and produce faster resorption.
Variety of shade and mold is available
Do not bond with acrylic resin base
Retained to denture base mechanically
Porcelain denture teeth
This restoration does not use any metal substructure, instead they use core porcelain.
All cermaic restoration
are also known as porcelain-fused to metal.
Metal-ceramic restoration
