Medical MCQs

5099 MCQs  (Page 92 of 510)

Dispersion of crystalline phase to strengthen ceramics results in_________________?
A. Dispersed porcelain
B. Glazed porcelain
C. Aluminium porcelain
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
Super abrasive is________________?
A. Sand
B. Silicon arbide
C. Diamond
D. Aluminum oxide
The maximum shrinkage during firing proces in ceramic occurs in__________________?
A. High bisque stage
B. Low bisque stage
C. Medium bisque stage
D. Fusion stage
Coefficient of thermal expansion of metal-ceramic alloys is________________?
A. Same as porcelain
B. More than porcelain
C. Less than porcelain
D. More than or equal to porcelain but not less
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
Chemical method of strengthening porcelain involves_________________?
A. Exchange of aluminium and sodium ions
B. Exchange of aluminium and potassium ions
C. Exchange of sodium and potassium ions
D. None of the above
Compared with dental alloys, CERAMICS show____________________?
A. High ductility
B. High hardness
C. Low esthetic value
D. Susceptibility to brittle fracture