Which of the following bur is used in the preparation of cavity restored with porcelain fused to metal ? A. Carbide bur B. Diamond bur C. Stainless steel burD. Diamond but for porcelain and carbide bur for metal
Quartz is Dental porcelain is______________? A. Strengthener B. Binder C. Pigment D. Crack minimzer
In method of firing: A shorter firing period at a higher temperature is considered better_______________? A. A large time period at a lower temperature is preferredB. A long firing period at a very high temperature is preferred C. A short…
Porcelain binds to metal in PFM crown by_________________? A. Metallic bind B. Transparency C. Chemical bondD. B and C
Dicor restoration is_______________? A. Two coloured restorations B. Heat pressed ceramicsC. Castabel ceramic D. None of the above
Opaque porcelain________________? A. Is Feldspathic glassB. Contains opacifier like zirconium and titanium oxide C. Not used to mask the colour of the cement used in placing of restoration D. Used to produce the characteristic translucence, which is an inherent aspect…
Flux used in dental ceramic is________________? A. Alumina B. Silica C. KaolinD. Boric oxide
Which is not present in porcelain________________? A. Silica B. Feldspar C. Calcium carbonateD. Amorphous material
Machineable glass ceramic is________________? A. CerestoreB. Decor MGC C. Infusium D. Leucite
Phenomenon in which porcelain appears different under varying light condition is______________? A. Translucency B. Refractive opticsC. Metamerism D. Opacification