TEST BANK Dental Materials Clinical Applications for Dental Assistants and Dental Hygienists (3rd Ed) By Hatrick; Eakle.pdf

TEST BANK Dental Materials
Clinical Applications for Dental
Assistants and Dental Hygienists
(3rd Ed) By Hatrick; Eakle

🦷 Dental Materials Test Bank (Practice)
1. Dental materials are primarily used to:

A. Diagnose disease​
B. Restore and replace tooth structure​
C. Cure infections​
D. Reduce pain

✅ Answer: B​
Rationale: Dental materials restore function, esthetics, and structure.




2. The oral environment is characterized by:

A. Constant dryness​
B. Stable temperature​
C. Moisture and temperature changes​
D. No bacteria

✅ Answer: C

3. Which property refers to a material’s resistance to breaking under force?

,A. Elasticity​
B. Strength​
C. Hardness​
D. Flow

✅ Answer: B

4. A material that returns to original shape after stress is:

A. Plastic​
B. Elastic​
C. Brittle​
D. Rigid

✅ Answer: B

5. The “Amalgam War” was about:

A. Cost of materials​
B. Safety of amalgam​
C. Tooth whitening​
D. Infection control

✅ Answer: B

6. Which organization sets international standards for dental materials?

A. WHO​
B. FDA​
C. ISO​
D. CDC

✅ Answer: C

7. ADA Seal helps to:

A. Increase cost​
B. Guarantee color​

, C. Assure safety and effectiveness​
D. Promote sales only

✅ Answer: C

8. The FDA regulates dental materials as:

A. Foods​
B. Devices​
C. Chemicals only​
D. Supplements

✅ Answer: B

9. Which property measures resistance to indentation?

A. Strength​
B. Hardness​
C. Elasticity​
D. Flow

✅ Answer: B

10. Stress is defined as:

A. Force applied​
B. Deformation​
C. Pressure inside material​
D. Heat

✅ Answer: A

Physical & Mechanical Properties


11. Strain refers to: