A. Have a higher coefficient of thermal expansion than acrylic teeth:
B. Have a lower abrasion resistance than enamel
C. Should be used where the inter dental clearance is small
D. Have a higher abrasion resistance than gold
Related Mcqs:
- For porcelain fused to metal crown, the porcelain should have ______________?
A. High fusion expansion
B. High fusion temperature
C. Linear coefficient of thermal expansion less than that of metal
D. Linear coefficient of thermal expansion more than that of metal - Which of the following is true for permanent teeth________________?
A. Maxillary roots are inclined distally where as Mandibular roots are inclined mesially
B. Maxillary molars are buccally inclined and Mandibular molars are inclined lingually
C. Buccal cusps of lower and lingual cusps of upper are the functional cusp
D. All of the above - The preferred material for repair of fractured denture base is______________?
A. Chemically cure resin
B. Heat curve resin
C. Light cure resin
D. Vinyl resin - Phenomenon in which porcelain appears different under varying light condition is______________?
A. Translucency
B. Refractive optics
C. Metamerism
D. Opacification - Porcelain binds to metal in PFM crown by_________________?
A. Metallic bind
B. Transparency
C. Chemical bond
D. B and C - Quartz is Dental porcelain is______________?
A. Strengthener
B. Binder
C. Pigment
D. Crack minimzer - 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 bur
D. Diamond but for porcelain and carbide bur for metal - Stage recognized in the firing of dental porcelain given below. Which of state is not correct ?
A. Cold stage bisque
B. Low bisque
C. Medium bisque
D. High bisque - Porosity in porcelain can be prevented by_______________?
A. Thoroughness of condensation
B. Rapidity of firing
C. High firing temperature
D. All of the above - To prevent porosity in dental porcelain it should be backed________________?
A. Boric oxide
B. In vacuum
C. For long period
D. Under pressure
