Local Anesthesia CDCA Practice Questions
Ace Your Dental Anesthesia Exams with This High-
Yield Power Pack!
Master key concepts and clinical pearls with these challenging questions and
concise, accurate answers.
1. V3 Exit Point:
Answer: Ovale (Foramen Ovale)
2. IA Needle Penetration Depth:
Answer: 3/4 of the needle length
3. Syringe Armamentarium Disposal:
Answer: Sharps Container
4. Maximum Lidocaine Topical Patch Duration:
Answer: 15 minutes
5. Tissue Easiest to Anesthetize Topically:
Answer: Non-keratinized mucosal membrane
6. Periodontal Treatment Injections (#14, 15, 16):
Answer: Posterior Superior Alveolar (PSA), Greater Palatine (GP), Middle
Superior Alveolar (MSA)
7. Maxillary Anterior Lingual Tissue Nerve Supply:
Answer: Nasopalatine Nerve
8. Lower Lip Numbness - Anesthetized Nerve:
Answer: Mental Nerve
, 9. Soft Palate Numbness - Anesthetized Nerve:
Answer: Lesser Palatine Nerve (sometimes a small area by the Greater
Palatine)
10. Immediate Facial Swelling Post-PSA: - Cause: Needle entered the pterygoid
plexus of veins
11. Immediate In-Office Hematoma Treatment: - Answer: Direct pressure,
followed by ice pack application.
12. Recommended Post-Appointment Hematoma Treatment: - Answer: Ice
pack for the first 24 hours, then moist heat.
13. Trismus Causes: - Answer: Trauma to muscles (often from needle insertion),
hemorrhage, infection, or temporomandibular joint (TMJ) irritation.
14. Patient Care for Trismus: - Answer: Jaw exercises (passive opening and
closing), warm compresses, and oral analgesics (NSAIDs).
15. Anesthetic Shelf Life Expiration: - Answer: When the expiration date
printed on the side of the cartridge states.
16. PSA Injection - Unanesthetized Maxillary Molar Root: - Answer: Mesial
buccal (MB) root of the first molar (due to variable innervation).
17. V3 Innervation Exception: - Answer: C. Infraorbital (innervated by V2)
18. Buccal Injection Site: - Answer: Buccal and distal to the most distal molar in
the arch, at the height of the occlusal plane.
19. Contraindicated Intraoral Antiseptic: - Answer: Alcohol (can cause tissue
irritation and dryness).
20. Maxillary Nerve Classification: - Answer: Sensory
21. IA Injection - Bone Contact at 1/3 Needle Depth: - Action: Partially retract
the needle from the bone, then reposition the syringe so the needle is aimed slightly
more posteriorly along the mandible, above the previous contact point.
Ace Your Dental Anesthesia Exams with This High-
Yield Power Pack!
Master key concepts and clinical pearls with these challenging questions and
concise, accurate answers.
1. V3 Exit Point:
Answer: Ovale (Foramen Ovale)
2. IA Needle Penetration Depth:
Answer: 3/4 of the needle length
3. Syringe Armamentarium Disposal:
Answer: Sharps Container
4. Maximum Lidocaine Topical Patch Duration:
Answer: 15 minutes
5. Tissue Easiest to Anesthetize Topically:
Answer: Non-keratinized mucosal membrane
6. Periodontal Treatment Injections (#14, 15, 16):
Answer: Posterior Superior Alveolar (PSA), Greater Palatine (GP), Middle
Superior Alveolar (MSA)
7. Maxillary Anterior Lingual Tissue Nerve Supply:
Answer: Nasopalatine Nerve
8. Lower Lip Numbness - Anesthetized Nerve:
Answer: Mental Nerve
, 9. Soft Palate Numbness - Anesthetized Nerve:
Answer: Lesser Palatine Nerve (sometimes a small area by the Greater
Palatine)
10. Immediate Facial Swelling Post-PSA: - Cause: Needle entered the pterygoid
plexus of veins
11. Immediate In-Office Hematoma Treatment: - Answer: Direct pressure,
followed by ice pack application.
12. Recommended Post-Appointment Hematoma Treatment: - Answer: Ice
pack for the first 24 hours, then moist heat.
13. Trismus Causes: - Answer: Trauma to muscles (often from needle insertion),
hemorrhage, infection, or temporomandibular joint (TMJ) irritation.
14. Patient Care for Trismus: - Answer: Jaw exercises (passive opening and
closing), warm compresses, and oral analgesics (NSAIDs).
15. Anesthetic Shelf Life Expiration: - Answer: When the expiration date
printed on the side of the cartridge states.
16. PSA Injection - Unanesthetized Maxillary Molar Root: - Answer: Mesial
buccal (MB) root of the first molar (due to variable innervation).
17. V3 Innervation Exception: - Answer: C. Infraorbital (innervated by V2)
18. Buccal Injection Site: - Answer: Buccal and distal to the most distal molar in
the arch, at the height of the occlusal plane.
19. Contraindicated Intraoral Antiseptic: - Answer: Alcohol (can cause tissue
irritation and dryness).
20. Maxillary Nerve Classification: - Answer: Sensory
21. IA Injection - Bone Contact at 1/3 Needle Depth: - Action: Partially retract
the needle from the bone, then reposition the syringe so the needle is aimed slightly
more posteriorly along the mandible, above the previous contact point.
