DENTAL MATERIALS EXAM 1 | DENTAL
HYGIENIST| DENTAL HYGIENIST | LATEST
2025-2026 QUESTION AND CORRECT ANSWER
WITH EXPLANATION WEST COAST
UNIVERSITY
1. Question
Which property BEST describes a dental material’s ability to resist
permanent deformation under load?
A. Elasticity
B. Plasticity
C. Strength
D. Ductility
Correct Answer: C
Rationale: Strength refers to a material’s ability to withstand stress
without failure.
2. Question
Which material is MOST commonly used for direct tooth-colored
restorations in anterior teeth?
A. Amalgam
B. Composite resin
C. Gold alloy
D. Zinc oxide eugenol
Correct Answer: B
Rationale: Composite resin provides esthetics and direct placement
capability.
3. Question
What is the PRIMARY purpose of etching enamel before composite
placement?
,A. Increase color stability
B. Create micro-retention for bonding
C. Reduce polymerization shrinkage
D. Increase fluoride uptake
Correct Answer: B
Rationale: Etching creates microporosities for mechanical bonding.
4. Question
Which dental material releases fluoride over time?
A. Composite resin
B. Glass ionomer cement
C. Amalgam
D. Porcelain
Correct Answer: B
Rationale: Glass ionomers release fluoride, aiding caries prevention.
5. Question
What is the MAIN disadvantage of dental amalgam?
A. Weak strength
B. Poor esthetics
C. High cost
D. Rapid wear
Correct Answer: B
Rationale: Amalgam is durable but not tooth-colored.
6. Question
Which property refers to a material’s ability to be drawn into a wire?
A. Brittleness
B. Malleability
, C. Ductility
D. Hardness
Correct Answer: C
Rationale: Ductility is the ability to be stretched into wire.
7. Question
Which material is MOST suitable for luting crowns permanently?
A. Zinc phosphate cement
B. Alginate
C. Wax
D. Gutta-percha only
Correct Answer: A
Rationale: Zinc phosphate cement is strong and commonly used for
cementation.
8. Question
What is the PRIMARY function of a dental impression material?
A. Whitening teeth
B. Replicating oral structures
C. Strengthening enamel
D. Removing plaque
Correct Answer: B
Rationale: Impression materials capture oral anatomy for models.
9. Question
Which impression material is MOST accurate for fixed prosthodontics?
A. Alginate
B. Addition silicone (PVS)
C. Wax
D. Zinc oxide eugenol
HYGIENIST| DENTAL HYGIENIST | LATEST
2025-2026 QUESTION AND CORRECT ANSWER
WITH EXPLANATION WEST COAST
UNIVERSITY
1. Question
Which property BEST describes a dental material’s ability to resist
permanent deformation under load?
A. Elasticity
B. Plasticity
C. Strength
D. Ductility
Correct Answer: C
Rationale: Strength refers to a material’s ability to withstand stress
without failure.
2. Question
Which material is MOST commonly used for direct tooth-colored
restorations in anterior teeth?
A. Amalgam
B. Composite resin
C. Gold alloy
D. Zinc oxide eugenol
Correct Answer: B
Rationale: Composite resin provides esthetics and direct placement
capability.
3. Question
What is the PRIMARY purpose of etching enamel before composite
placement?
,A. Increase color stability
B. Create micro-retention for bonding
C. Reduce polymerization shrinkage
D. Increase fluoride uptake
Correct Answer: B
Rationale: Etching creates microporosities for mechanical bonding.
4. Question
Which dental material releases fluoride over time?
A. Composite resin
B. Glass ionomer cement
C. Amalgam
D. Porcelain
Correct Answer: B
Rationale: Glass ionomers release fluoride, aiding caries prevention.
5. Question
What is the MAIN disadvantage of dental amalgam?
A. Weak strength
B. Poor esthetics
C. High cost
D. Rapid wear
Correct Answer: B
Rationale: Amalgam is durable but not tooth-colored.
6. Question
Which property refers to a material’s ability to be drawn into a wire?
A. Brittleness
B. Malleability
, C. Ductility
D. Hardness
Correct Answer: C
Rationale: Ductility is the ability to be stretched into wire.
7. Question
Which material is MOST suitable for luting crowns permanently?
A. Zinc phosphate cement
B. Alginate
C. Wax
D. Gutta-percha only
Correct Answer: A
Rationale: Zinc phosphate cement is strong and commonly used for
cementation.
8. Question
What is the PRIMARY function of a dental impression material?
A. Whitening teeth
B. Replicating oral structures
C. Strengthening enamel
D. Removing plaque
Correct Answer: B
Rationale: Impression materials capture oral anatomy for models.
9. Question
Which impression material is MOST accurate for fixed prosthodontics?
A. Alginate
B. Addition silicone (PVS)
C. Wax
D. Zinc oxide eugenol
