Question: Dicor restoration is_______________?

• 1. Two coloured restorations
• 2. Heat pressed ceramics
• 3. Castabel ceramic
• 4. None of the above

Question: Opaque porcelain________________?

• 1. Is Feldspathic glass
• 2. Contains opacifier like zirconium and titanium oxide
• 3. Not used to mask the colour of the cement used in placing of restoration
• 4. Used to produce the characteristic translucence, which is an inherent aspect of the incisal edge in natural teeth

Question: Flux used in dental ceramic is________________?

• 1. Alumina
• 2. Silica
• 3. Kaolin
• 4. Boric oxide

Question: Which is not present in porcelain________________?

• 1. Silica
• 2. Feldspar
• 3. Calcium carbonate
• 4. Amorphous material

Question: Machineable glass ceramic is________________?

• 1. Cerestore
• 2. Decor MGC
• 3. Infusium
• 4. Leucite

Question: Phenomenon in which porcelain appears different under varying light condition is______________?

• 1. Translucency
• 2. Refractive optics
• 3. Metamerism
• 4. Opacification

Question: In porcelain metal elements are embedded in the matrix of________________?

• 1. Rubber matrix
• 2. Glass
• 3. Plastic
• 4. Resin matrix

Question: Porosity in porcelain at condensation stage depends on_________________?

• 1. Shape and size of particle
• 2. Uniform distribution of particle size
• 3. Number of particles
• 4. None of the above

Question: The opacity in ceramics is achieved by adding_______________?

• 1. Boric oxide
• 2. Copper oxide
• 3. Silica
• 4. Titanium oxide

Question: Porcelain denture teeth________________?

• 1. Have a higher coefficient of thermal expansion than acrylic teeth:
• 2. Have a lower abrasion resistance than enamel
• 3. Should be used where the inter dental clearance is small
• 4. Have a higher abrasion resistance than gold