A. One to two minutes
B. Three to four minutes
C. Five to six minutes
D. Seven to eight minutes
Related Mcqs:
- The ADA specification No 1 for composition of amalgam alloy recommends______________?
A. 65% silver, 32% tin and 3% copper
B. 49% silver, 32% tin and 19% cooper
C. 65% silver, 29% tin and 5-6% copper
D. None of the above - Well premeasured capsules of amalgam can release mercury vapour during_______________?
A. Mulling
B. Carving
C. Condensation
D. Trituration - How soon after a moisture contamination does a zinc containing amalgam alloy start expanding________________?
A. 24 hours
B. 1-2 days
C. 3-5 days
D. 7 days - High strength amalgam is achieved by_____________?
A. Maximum matrix and minimum alloy phase
B. Minimum matrix and maximum alloy phase
C. Maximum matrix phase
D. Minimum alloy phase - Which of the following are characteristic feature of high copper amalgam alloy ?
A. Low compressive strength
B. High marginal breakdown
C. Less marginal #
D. High creep - Cavo surface angle for amalgam resoration is butt joint as____________?
A. It increases compresssive and tensile strengths
B. Decreased compressive, increased strength
C. Decreased compressive, decrease tensile strength
D. Increased compressive, increased tensile strength - Amalgam achieves 70% of the strength by____________?
A. hours
B. 4 hours
C. 8 hours
D. 16 hours - Which is not true about high copper amalgam alloys______________?
A. Low tensile and compressive strength
B. Low Hg: Alloy ratio
C. High tensile strength
D. Low creep - What is the recommended for condensation of dental amalgam ?
A. 35 pounds
B. 3 pounds
C. 15 lb
D. 25 lb - Setting time of Amalgam is best controlled by _______________?
A. Using spherical particles
B. Lathe cut alloy
C. Altering Hg-Alloy ratio
D. Trituration time
