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: Color matching in restorations is influenced by
A) Opacity
B) Hue, value, and chroma
C) Radiopacity
D) Density
Q: Initial setting time of GIC can be affected by
A) Pressure
B) Etching
C) Light curing
D) Humidity
Q: Tensile failure in brittle materials is due to
A) Temperature
B) Moisture
C) Micro-cracks
D) Plasticity
Q: The most moisture-sensitive impression material is
A) Polyether
B) Silicone
C) Polysulfide
D) Alginate
Q: Coefficient of thermal expansion is highest in
A) Enamel
B) Amalgam
C) Porcelain
D) Composite resin
Q: Delayed expansion in zinc-containing amalgam is caused by
A) Lack of pressure
B) Over-trituration
C) Excess mercury
D) Moisture contamination
Q: Cohesive failure occurs within the
A) Adhesive
B) Substrate
C) Interface
D) Material itself
Q: High copper amalgams exhibit
A) Low strength
B) High creep
C) Corrosion
D) No gamma-2 phase
Q: Polymerization shrinkage is lowest in
A) Microfill composite
B) Hybrid composite
C) Bulk-fill composite
D) Flowable composite
Q: Glass ionomer cements are primarily bonded to tooth structure by
A) Mechanical retention
B) Ionic interaction
C) Resin tags
D) Chelation with collagen