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.Management Sciences
Category: Dental Materials
The simplest alloy is a_______________?
A. Solid solution
B. Eutectic alloy
C. Peritectic allowy
D. Ternary alloy
Eugenol may be replaced in the zinc oxide eugenol cement by______________?
A. Acetic acid
B. Alginic acid
C. Phosphoric acid
D. Ortho-ethoxy acid
Which of the following hardness test is a micro hardness test ?
A. Brinnel
B. Knoop
C. Shore-A
D. Rockwell
Dimensional stability of elastomeric impression material can be given in descending order as_____________?
A. Polysulphide > polyether > Condensation silicone > Addition silicone
B. polyether > Condensation silicone > Polysulphide > Addition silicone
C. Addition silicone > polyether > Polysulphide > Condensation silicone
D. Addition silicone> Condensation silicone > Polysulphide > polyether
As per DNA No. 25, minimum amount of setting expansion required for type V gypsum products_______________?
A. 0.05
B. 0.10
C. 0.15
D. 0.20
Which of the following is present in the powder of the acrylic resin______________?
A. Methyl methacrylate
B. Benzoyl peroxide
C. Hydroquinone
D. D-methyl paratolouidine
Which cement is irritating to the pulp ?
A. Carboxylate cement
B. Zinc oxide-eugenol cement
C. Zinc phosphate
D. Ethoxybenzoic acid
Flow of a material refers to_______________?
A. Continued change of the material under a given load
B. The consistency of material when mixing
C. The homogencity of gypsum products
D. Dimensional change of the material during settings
Linear coefficient of thermal expansion of metal used for metal caramic restoration range from________________?
A. 11.5-12.5×10-6/°C
B. 10.5-11.5×10-6/°C
C. 13.5-14.5×10-6/°C
D. 16.5-17.5×10-6/°C
Heavy and light body impression materials are use with______________?
A. Mercaptan
B. Silicone
C. Reversible hydrocolloid
D. A and B
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