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: In endodontic procedures, gutta-percha is the most commonly used material for obturating the root canal space
A) Composite
B) MTA
C) Zinc phosphate
D) Gutta-percha
✅ Correct Answer: D
Explanation: Gutta-percha is biocompatible and provides a good seal when used with sealers.
Q: During casting, shrinkage of molten metal is compensated by using a properly calculated sprue and reservoir system
A) Surface porosity
B) Overcooling
C) Sprue system
D) Underheating
✅ Correct Answer: C
Explanation: Proper casting design prevents shrinkage voids.
Q: The use of calcium hydroxide liners beneath deep restorations stimulates the formation of reparative dentin
A) Causes sensitivity
B) Weakens enamel
C) Enhances bonding
D) Stimulates dentin
✅ Correct Answer: D
Explanation: Calcium hydroxide promotes pulp healing and tertiary dentin formation.
Q: Gypsum products stored in open air tend to absorb moisture from the environment, resulting in slower and weaker setting
A) Water loss
B) Faster set
C) Stronger crystals
D) Moisture contamination
✅ Correct Answer: D
Explanation: Humidity degrades the performance of gypsum powders.