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: Zinc oxide eugenol is best known for
A) Fluoride release
B) High tensile strength
C) Sedative properties
D) Permanent restorations
✅ Correct Answer: C
Explanation: Eugenol provides a soothing effect on the pulp, giving it sedative properties.
Q: Amalgam requires the presence of
A) Polymerization reaction
B) Adequate cavity depth
C) Moisture control
D) High esthetics
✅ Correct Answer: B
Explanation: Proper cavity depth is necessary for mechanical retention and strength in amalgam restorations.
Q: Polymerization shrinkage is associated with
A) Zinc phosphate
B) Glass ionomer
C) Composite resin
D) Amalgam
✅ Correct Answer: C
Explanation: Composite resins undergo shrinkage during curing, which can cause marginal gaps.
Q: A primary advantage of using alginate as an impression material
A) Quick setting time
B) High accuracy
C) Resistance to tear
D) Dimensional stability
✅ Correct Answer: A
Explanation: Alginate sets quickly, making it convenient for preliminary impressions.
Q: Gypsum products are commonly used for
A) Model and die fabrication
B) Etching enamel
C) Final restorations
D) Cavity liners
✅ Correct Answer: A
Explanation: Gypsum is used to create accurate models and dies for restorative procedures.