A. Strength
B. Expansion components for casting shrinkage
C. Decrease strength
D. Contraction
Related Mcqs:
- Quartz is added to gypsum bonded investment to______________?
A. Increase the strength
B. Counter balance contraction of gypsum during heating
C. aid in hygroscopic expansion
D. Increase the shelf life of investment - Quartz is Dental porcelain is______________?
A. Strengthener
B. Binder
C. Pigment
D. Crack minimzer - Quartz tungsten light cure device minimum output of energy should not be less than_____________?
A. 300 mw/sm2
B. 350 mw/cm2
C. 400 mw/cm2
D. 450 mw/cm2 - Investment material used for cobalt-chromium alloys is_____________?
A. Gypsum bonded
B. Phosphate bonded
C. Silica bonded
D. None of the above - Waxes are used for_______________?
A. Primary impression
B. Corrective impressions
C. Impression of single tooth
D. None of the above - Frozen slab technique of mixing zinc phosphate is used for_______________?
A. Cementing crowns
B. Temporary dressing
C. base
D. cementing orthodontic bands - Gillmore needle is used for_______________?
A. Testing the strength of plaster of paris
B. Evaluating the setting time of plaster of pris
C. Testing the metal hardness
D. Testing the purity of noble metals - K2SO4 in agar-agar is for_______________?
A. Accelerating the setting stage of gypsum
B. Increase strength
C. Give dimensional stability
D. None of the above - Perforated impression tray are used for_______________?
A. Alginate
B. Zinc oxide-eugenol
C. Agar-agar
D. Impression compound - Use of dimethyl-P-toluidine is indicated for_______________?
A. Thermal polymerization of acrylic
B. Chemical polymerization
C. Retarding the polymerization reaction
D. To inhibit the action of benzoyl peroxide
