Dental Materials MCQs
Dental Materials MCQs cover properties, manipulation, and clinical use of dental amalgam, composites, glass ionomers, impression materials, and adhesives, helping BDS and MDCAT students prepare effectively for exams and dental practice knowledge.
Q: To prevent microleakage, dental sealants should be placed under dry conditions using rubber dam isolation
A) Rubber dam
B) Moist cotton
C) Heat drying
D) Wet field
Q: When using a glass ionomer liner, it should be placed in a thin layer and light-cured if resin-modified to achieve optimal bonding
A) Light-cured thin layer
B) Thick layer applied
C) Bulk filled
D) No curing needed
Q: Fracture toughness of a dental material refers to its ability to resist crack propagation under stress
A) Thermal resistance
B) Color change
C) Crack resistance
D) Compressive stress
Q: Resin composites should be added in increments of 2 mm or less to avoid polymerization shrinkage stress
A) Post-curing
B) Incremental layering
C) Single fill
D) Bulk placement
Q: The coefficient of thermal expansion in dental materials must closely match natural teeth to avoid marginal gaps
A) Hardness
B) Match enamel
C) Low cost
D) Improve color