A. Atomic attraction and welding
B. Annealing
C. Wedging
D. Adaptation
Direct Filling Gold
The pure form of gold used in dentistry is known as___________________?
A. Cohesive gold
B. Non cohesive gold
C. Class I casting gold
D. Class IV casting gold
Which of the following is true about direct filling gold______________?
A. Properly condensed mat gold has no voids
B. Whatever may be the type voids are inherent
C. Voids can be avoided with manual condensation
D. None of the above
In type II gold alloys _______ Karat gold is used?
A. 24 K
B. 22 K
C. 18 K
D. 10 K
Average particle size of powdered gold is________________?
A. 10 um
B. 15 um
C. 30 um
D. 0.1 um
When Gold fused with porcelain is fired at very high temperature greenish discoloration of cervical margin is due to________________?
A. High firing temperature
B. Disintegration of opaque layer
C. Presence of copper
D. Formation of excess oxides
Direct filling gold formed by electrolytic precipitation is called by all the terms EXCEPT______________?
A. Crystalline
B. Granular gold
C. Mat gold
D. Sponge gold
