Dental Materials MCQs
Dental Materials MCQs test the understanding of restorative and preventive materials used in dentistry. Topics include dental amalgam, composite resins, glass ionomers, impression materials, and adhesives. These MCQs are valuable for BDS and MDCAT students aiming to grasp the properties, manipulation, and clinical use of dental materials.
Q: Calcium hydroxide is commonly used for
A) Pit and fissure sealing
B) Pulp capping
C) Etching enamel
D) Orthodontic bonding
Q: A major disadvantage of polyether impression material
A) Stiffness after setting
B) Short working time
C) Hydrophobic nature
D) High flexibility
Q: Resin-modified glass ionomer differs from traditional GIC due to
A) Polymerizable resin component
B) Addition of metal
C) Lack of fluoride
D) Presence of zinc
Q: Delayed expansion in zinc-containing amalgams occurs due to
A) Polymerization shrinkage
B) Corrosion
C) Moisture contamination
D) Incomplete mixing
Q: Abrasiveness of a dental material is measured by
A) Solubility index
B) Optical density
C) Hardness number
D) Tensile strength
Q: The component in amalgam alloy responsible for strength
A) Mercury
B) Copper
C) Silver
D) Tin
Q: The ideal impression material for complete denture final impressions
A) Polyether
B) Bite registration wax
C) Alginate
D) Zinc oxide eugenol paste
Q: Porosity in acrylic resin dentures may result from
A) Slow mixing
B) Adequate pressure
C) Cold curing
D) Rapid heating
Q: Fluoride release from glass ionomer contributes to
A) Esthetic appearance
B) Increased opacity
C) Caries prevention
D) Faster setting time
Q: Dimensional stability of an impression material determines how well it retains its original shape over time
A) Polyether
B) Agar
C) Alginate
D) Silicone