A. Better handling property
B. Dimensional Stability
C. Resistance to creep
D. Toxicity to pulp and dentin
✅ The correct answer is option A. Better handling property.
Dental Materials
High copper amalgam can be produced_____________?
A. From smooth atomized particles
B. From irregular and spherical particles
C. From lathe cut particles
D. From traditional alloy particles
✅ The correct answer is option B. From irregular and spherical particles.
Ceramics fired to metals are processed by_______________?
A. Heat pressing
B. Machining
C. Sintering
D. Slip casting
✅ The correct answer is option C. Sintering.
In method of firing: A shorter firing period at a higher temperature is considered better_______________?
A. A large time period at a lower temperature is preferred
B. A long firing period at a very high temperature is preferred
C. A short firing period at a very low temperature is preferred
D. none of these
✅ The correct answer is option B. A long firing period at a very high temperature is preferred.
The main components is sillicophosphate cement________________?
A. Zinc phosphate and GIC
B. Silicate and GIC
C. ZOE and Silicate
D. Zinc phosphate and SIlicate
✅ The correct answer is option D. Zinc phosphate and SIlicate.
Clogging of an abrasive wheel with debris causing reduction of abrasive action is called________________?
A. Blinding
B. Buffing
C. Dressing
D. Truing
✅ The correct answer is option A. Blinding.
Chemical tempering in porcelains is done to interrupt crack propagation by______________?
A. Transformation toughening
B. Dispersion of crystalline phase
C. Inducing residual compressive strength
D. All of the above
✅ The correct answer is option C. Inducing residual compressive strength.
Super abrasive is________________?
A. Sand
B. Silicon arbide
C. Diamond
D. Aluminum oxide
✅ The correct answer is option C. Diamond.
Over-trituration of silver alloy and mercury_______________?
A. Reduces contraction
B. Increases the strength of lathe cut alloy but reduces the strength of spherical alloy amalgam
C. Decreases creep
D. Gives al dull and crumbly amalgam
✅ The correct answer is option B. Increases the strength of lathe cut alloy but reduces the strength of spherical alloy amalgam.
Which cement base has the highest modulus of elasticity ?
A. Zinc polycarboxylate
B. Polymer reinforced ZOE cement
C. Zinc phosphate
D. Glass inomer cement
✅ The correct answer is option C. Zinc phosphate.