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Dental Ceramics Mcqs
Q.1: Porcelain denture teeth________________?(
A.
Have a higher coefficient of thermal expansion than acrylic teeth:B
B.
Have a lower abrasion resistance than enamel,
C.
Should be used where the inter dental clearance is small8
D.
Have a higher abrasion resistance than gold+
Q.2: The opacity in ceramics is achieved by adding_______________?=
A.
Boric oxide
B.
Copper oxide
C.
Silica
D.
Titanium oxide
Q.3: Porosity in porcelain at condensation stage depends on_________________?H
A.
Shape and size of particle
B.
Uniform distribution of particle size%
C.
Number of particles
D.
None of the above
Q.4: In porcelain metal elements are embedded in the matrix of________________?J
A.
Rubber matrix
B.
Glass
C.
Plastic
D.
Resin matrix
Q.5: Phenomenon in which porcelain appears different under varying light condition is______________?_
A.
Translucency
B.
Refractive optics
C.
Metamerism
D.
Opacification
Q.6: Machineable glass ceramic is________________?-
A.
Cerestore
B.
Decor MGC
C.
Infusium
D.
Leucite
Q.7: Which is not present in porcelain________________?2
A.
Silica
B.
Feldspar
C.
Calcium carbonate
D.
Amorphous material
Q.8: Flux used in dental ceramic is________________?/
A.
Alumina
B.
Silica
C.
Kaolin
D.
Boric oxide
Q.9: Opaque porcelain________________?!
A.
Is Feldspathic glass
B.
Contains opacifier like zirconium and titanium oxide4
C.
Not used to mask the colour of the cement used in placing of restorationH
D.
Used to produce the characteristic translucence, which is an inherent aspect of the incisal edge in natural teethq
Q.10: Dicor restoration is_______________?$
A.
Two coloured restorations
B.
Heat pressed ceramics
C.
Castabel ceramic
D.
None of the above
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