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.Management Sciences
Category: Dental Materials
Minimum flow of Type-I impression compound at mouth temperature is___________________?
0
A. 4%
B. 6%
C. 8%
D. 10%
For dental amalgam, the elastic modulus and tensile strength is______________?
A. 40 Gpa and 60 – 100 Mpa
B. 21 Gpa and 27 – 55 Mpa
C. 350 Gpa and 10 – 120 Mpa
D. 360 Gpa and 125 – 130 Mpa
In non zinc containing dental amalgam alloy the percentage of zinc present is______________?
A. Less than 0.02%
B. Less than 0.1%
C. Less than 0.01%
D. None of the above
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
Etching depth after 30 sec for orthodontic bracket with orthophosphoric acid is_________________?
A. 10 um – 20 um
B. 3 um – 9 um
C. 50 um – 110 um
D. 200 um – 250 um
Which zone is the hottest and efficient burning zone of the flame used for casting ?
A. Oxidizing zone
B. Reducing zone
C. Combustion zone
D. None of the above
Which of the following may result if an excessive amount of monomer is incorporated into an acrylic resin mixture ?
A. Excessive expansion
B. Low impact strength
C. Excessive shrinkage
D. Excessive brittleness
VLC resins are also called as______________?
A. Microwave-activated resins
B. Tertiary amine-activated resins
C. Light activated resins
D. Heat activated resins
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