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: The component in amalgam alloy responsible for strength
A) Mercury
B) Copper
C) Silver
D) Tin
✅ Correct Answer: C
Explanation: Silver enhances strength and durability in dental amalgam.
Q: The ideal impression material for complete denture final impressions
A) Polyether
B) Bite registration wax
C) Alginate
D) Zinc oxide eugenol paste
✅ Correct Answer: D
Explanation: Zinc oxide eugenol provides fine detail and stability for denture impressions.
Q: Porosity in acrylic resin dentures may result from
A) Slow mixing
B) Adequate pressure
C) Cold curing
D) Rapid heating
✅ Correct Answer: D
Explanation: Rapid heating causes vaporization of monomer, leading to porosity in the final denture.
Q: Fluoride release from glass ionomer contributes to
A) Esthetic appearance
B) Increased opacity
C) Caries prevention
D) Faster setting time
✅ Correct Answer: C
Explanation: Fluoride ions help remineralize enamel and prevent secondary caries.
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
✅ Correct Answer: D
Explanation: Silicone materials offer excellent dimensional stability even after delays in pouring.