A. 50 – 60 KHN
B. 25 – 35 KHN
C. 15 – 20 KHN
D. 40 – 48 KHN
Related Mcqs:
- A restorative material which has a high proportional limit, compared with one with a lower proportional limit would have________________?
A. Greater ductility
B. Greater toughness
C. A higher modulus of elasticity
D. A higher modulus of elasticity
E. More resistance to permanent deformation - The particle size in microfilled composites is_____________?
A. 0.05 to 0.04mm
B. 0.5 to 1.0 microns
C. 0.01 to 0.1 microns
D. 0.3 to 0.4mm - What is the most frequently used restorative material ?
A. Silicate
B. Amalgam
C. Composite
D. Gold - Why GIC is best restorative material in children_____________?
A. High strength
B. Good marginal integrity
C. It can bond enamel & dentin
D. It has less occlusal wear - What is the disadvantage of using composites as restorative material ?
A. Increased thermal conductivity
B. Decreased wear resistance
C. Decreased thermal conductivity
D. None of the above - Which of the following hardness test is a micro hardness test ?
A. Brinnel
B. Knoop
C. Shore-A
D. Rockwell - Which one of the following restorative materials is having coefficient of thermal expansion close to that of tooth enamel and dentin ?
A. Microfilled composite resins
B. Pure gold
C. Silver amalgam
D. Type II Glass ionomer cement - The function of the coupling agent in a restorative resin is to allow______________?
A. Adhesion of resin particles
B. Bonding between filler crystals
C. Bonding between filler and resin
D. Bonding between tooth and resin - Which of the following is an example of a composite material ?
A. A filled resin
B. Colloidal silica
C. Gold alloy
D. Wax - Mercury intoxication in dental office mainly results from____________?
A. Direct contact with the mercury
B. Inhalation of mercury vapours
C. Ingestion of mercury
D. None of the above
