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: Resin-modified GIC offers improved
A) Shrinkage
B) Solubility
C) Flexural strength
D) Brittleness
✅ Correct Answer: C
Explanation: Resin-modified glass ionomers show better flexural strength and adhesion.
Q: Most radiopaque dental material is
A) Amalgam
B) Composite
C) GIC
D) Porcelain
✅ Correct Answer: A
Explanation: Amalgam appears highly radiopaque due to its metallic content.
Q: Baseplate wax is mainly used for
A) Final impressions
B) Carving teeth
C) Root canal filling
D) Bite registration
✅ Correct Answer: D
Explanation: Baseplate wax helps establish vertical dimension in prosthetics.
Q: The function of potassium sulfate in gypsum is to
A) Improve strength
B) Increase expansion
C) Retard setting
D) Reduce setting time
✅ Correct Answer: D
Explanation: Potassium sulfate acts as an accelerator in gypsum products.
Q: Flow property is highest in
A) Inlay wax
B) Baseplate wax
C) Sticky wax
D) Bite wax
✅ Correct Answer: A
Explanation: Inlay wax has superior flow at elevated temperatures for accuracy.
Q: Most hydrophilic impression material is
A) Agar
B) Polyether
C) Polysulfide
D) Silicone
✅ Correct Answer: A
Explanation: Agar is a hydrocolloid and is extremely hydrophilic in nature.
Q: Compressive strength is maximum in
A) Amalgam
B) GIC
C) Wax
D) Composite
✅ Correct Answer: A
Explanation: Amalgam exhibits high compressive strength compared to other materials.
Q: Acrylic resins are commonly used for
A) Denture bases
B) Orthodontic brackets
C) Crowns
D) Implants
✅ Correct Answer: A
Explanation: Acrylic resins are ideal for fabricating complete and partial denture bases.
Q: Etching of enamel creates
A) Caries
B) Cavities
C) Microporosities
D) Plaque
✅ Correct Answer: C
Explanation: Etching results in microporosities that enhance bonding.
Q: GIC bonds chemically with
A) Enamel and dentin
B) Amalgam
C) Porcelain
D) Stainless steel
✅ Correct Answer: A
Explanation: GIC forms ionic bonds with calcium in enamel and dentin.