PA EFDA Board Exam 2025/2026 QUESTIONS AND
VERIFIED CORRECT SOLUTIONS || 100%
GUARANTEED PASS <BRAND NEW VERSION>
PA EFDA Board Exam Practice Test 2025/2026
1. What is the primary purpose of a dental dam?
A. To improve the esthetics of the procedure
B. To isolate the operative field from contamination
C. To reduce the cost of the procedure
D. To make the patient more comfortable
✓ B. To isolate the operative field from contamination
2. Which material is commonly used for a final impression for a crown?
A. Alginate
B. Polyvinyl siloxane (PVS)
C. Zinc Oxide Eugenol (ZOE)
D. Plaster of Paris
✓ B. Polyvinyl siloxane (PVS)
3. The "Golden Proportion" in dentistry is primarily related to:
A. Cavity preparation depth
B. Esthetic tooth arrangement
C. The cost of gold restorations
D. Periodontal probe measurements
✓ B. Esthetic tooth arrangement
4. What is the primary function of a matrix band?
A. To whiten the teeth
B. To replace a missing tooth
C. To provide a temporary wall for the restoration
D. To take an impression
✓ C. To provide a temporary wall for the restoration
5. Which tooth surface is closest to the midline?
A. Distal
B. Mesial
C. Buccal
,D. Lingual
✓ B. Mesial
6. The term "occlusion" refers to:
A. The contact between the maxillary and mandibular teeth
B. The process of placing a filling
C. The inflammation of the gums
D. The nerve inside the tooth
✓ A. The contact between the maxillary and mandibular teeth
7. Which instrument is used to carve amalgam after condensation?
A. Spoon excavator
B. Hollenback carver
C. Plastic filling instrument
D. Scalpel
✓ B. Hollenback carver
8. What is the main component of dental amalgam?
A. Gold
B. Porcelain
C. Silver alloy
D. Composite resin
✓ C. Silver alloy
9. Gingival retraction cord is used primarily to:
A. Stop bleeding
B. Disinfect the sulcus
C. Manage moisture and displace tissue
D. Whiten the gingiva
✓ C. Manage moisture and displace tissue
10. The "C-factor" in composite resin placement refers to:
A. Color matching
B. Cavity configuration and polymerization stress
C. Cost factor
D. Curing time
✓ B. Cavity configuration and polymerization stress
11. Which agency regulates the safety and effectiveness of dental materials and devices?
A. OSHA
,B. FDA
C. EPA
D. CDC
✓ B. FDA
12. A rubber dam clamp is selected based on:
A. The color of the tooth
B. The size and shape of the tooth to be isolated
C. The patient's age
D. The dentist's preference for metal type
✓ B. The size and shape of the tooth to be isolated
13. The primary goal of coronal polishing is to:
A. Remove calculus
B. Remove stain and plaque
C. Whiten the teeth
D. Etch the enamel
✓ B. Remove stain and plaque
14. Which term describes the hard, outer layer of the tooth root?
A. Enamel
B. Dentin
C. Cementum
D. Pulp
✓ C. Cementum
15. What is the purpose of etching enamel with phosphoric acid?
A. To disinfect the tooth
B. To create micropores for mechanical retention
C. To whiten the tooth
D. To desensitize the tooth
✓ B. To create micropores for mechanical retention
16. A Class II cavity involves which surfaces?
A. Labial and Lingual
B. Incisal and Lingual
C. Mesial or Distal and Occlusal
D. Gingival only
✓ C. Mesial or Distal and Occlusal
, 17. Which material is used for a custom impression tray?
A. Polyether
B. Acrylic resin
C. Alginate
D. Zinc phosphate
✓ B. Acrylic resin
18. The periodontal ligament (PDL) functions to:
A. Hold the tooth in the socket
B. Produce saliva
C. Form enamel
D. Carry blood to the pulp
✓ A. Hold the tooth in the socket
19. What is the primary reason for placing a base under a deep restoration?
A. To improve the color
B. To provide thermal insulation and protect the pulp
C. To make the filling stronger
D. To reduce the cost
✓ B. To provide thermal insulation and protect the pulp
20. Which type of matrix system is typically used for a Class II composite restoration on a
molar?
A. Tofflemire
B. Spot-welded
C. Automatrix
D. Clear plastic strip
✓ A. Tofflemire
21. The term "isolation" in restorative dentistry most critically refers to controlling:
A. Sound
B. Light
C. Moisture
D. Patient movement
✓ C. Moisture
22. A dental liner, such as calcium hydroxide, is primarily used to:
A. Strengthen the final restoration
B. Stimulate reparative dentin formation
C. Etch the enamel
VERIFIED CORRECT SOLUTIONS || 100%
GUARANTEED PASS <BRAND NEW VERSION>
PA EFDA Board Exam Practice Test 2025/2026
1. What is the primary purpose of a dental dam?
A. To improve the esthetics of the procedure
B. To isolate the operative field from contamination
C. To reduce the cost of the procedure
D. To make the patient more comfortable
✓ B. To isolate the operative field from contamination
2. Which material is commonly used for a final impression for a crown?
A. Alginate
B. Polyvinyl siloxane (PVS)
C. Zinc Oxide Eugenol (ZOE)
D. Plaster of Paris
✓ B. Polyvinyl siloxane (PVS)
3. The "Golden Proportion" in dentistry is primarily related to:
A. Cavity preparation depth
B. Esthetic tooth arrangement
C. The cost of gold restorations
D. Periodontal probe measurements
✓ B. Esthetic tooth arrangement
4. What is the primary function of a matrix band?
A. To whiten the teeth
B. To replace a missing tooth
C. To provide a temporary wall for the restoration
D. To take an impression
✓ C. To provide a temporary wall for the restoration
5. Which tooth surface is closest to the midline?
A. Distal
B. Mesial
C. Buccal
,D. Lingual
✓ B. Mesial
6. The term "occlusion" refers to:
A. The contact between the maxillary and mandibular teeth
B. The process of placing a filling
C. The inflammation of the gums
D. The nerve inside the tooth
✓ A. The contact between the maxillary and mandibular teeth
7. Which instrument is used to carve amalgam after condensation?
A. Spoon excavator
B. Hollenback carver
C. Plastic filling instrument
D. Scalpel
✓ B. Hollenback carver
8. What is the main component of dental amalgam?
A. Gold
B. Porcelain
C. Silver alloy
D. Composite resin
✓ C. Silver alloy
9. Gingival retraction cord is used primarily to:
A. Stop bleeding
B. Disinfect the sulcus
C. Manage moisture and displace tissue
D. Whiten the gingiva
✓ C. Manage moisture and displace tissue
10. The "C-factor" in composite resin placement refers to:
A. Color matching
B. Cavity configuration and polymerization stress
C. Cost factor
D. Curing time
✓ B. Cavity configuration and polymerization stress
11. Which agency regulates the safety and effectiveness of dental materials and devices?
A. OSHA
,B. FDA
C. EPA
D. CDC
✓ B. FDA
12. A rubber dam clamp is selected based on:
A. The color of the tooth
B. The size and shape of the tooth to be isolated
C. The patient's age
D. The dentist's preference for metal type
✓ B. The size and shape of the tooth to be isolated
13. The primary goal of coronal polishing is to:
A. Remove calculus
B. Remove stain and plaque
C. Whiten the teeth
D. Etch the enamel
✓ B. Remove stain and plaque
14. Which term describes the hard, outer layer of the tooth root?
A. Enamel
B. Dentin
C. Cementum
D. Pulp
✓ C. Cementum
15. What is the purpose of etching enamel with phosphoric acid?
A. To disinfect the tooth
B. To create micropores for mechanical retention
C. To whiten the tooth
D. To desensitize the tooth
✓ B. To create micropores for mechanical retention
16. A Class II cavity involves which surfaces?
A. Labial and Lingual
B. Incisal and Lingual
C. Mesial or Distal and Occlusal
D. Gingival only
✓ C. Mesial or Distal and Occlusal
, 17. Which material is used for a custom impression tray?
A. Polyether
B. Acrylic resin
C. Alginate
D. Zinc phosphate
✓ B. Acrylic resin
18. The periodontal ligament (PDL) functions to:
A. Hold the tooth in the socket
B. Produce saliva
C. Form enamel
D. Carry blood to the pulp
✓ A. Hold the tooth in the socket
19. What is the primary reason for placing a base under a deep restoration?
A. To improve the color
B. To provide thermal insulation and protect the pulp
C. To make the filling stronger
D. To reduce the cost
✓ B. To provide thermal insulation and protect the pulp
20. Which type of matrix system is typically used for a Class II composite restoration on a
molar?
A. Tofflemire
B. Spot-welded
C. Automatrix
D. Clear plastic strip
✓ A. Tofflemire
21. The term "isolation" in restorative dentistry most critically refers to controlling:
A. Sound
B. Light
C. Moisture
D. Patient movement
✓ C. Moisture
22. A dental liner, such as calcium hydroxide, is primarily used to:
A. Strengthen the final restoration
B. Stimulate reparative dentin formation
C. Etch the enamel
