LOCAL ANESTHESIA -CDCA BOARD EXAM |
Questions and Correct Answers | Latest
Update 2025/2026 Questions are based on the
most commonly tested topics such as
pharmacology, anatomy, techniques,
complications, and patient safety.
1. Which of the following local anesthetics is safest for a patient with a
documented sulfa allergy?
A. Articaine
B. Lidocaine
C. Mepivacaine
D. Prilocaine
Mepivacaine does not contain para-aminobenzoic acid (PABA) derivatives and is
safe for sulfa-allergic patients.
2. Which cranial nerve is primarily responsible for carrying pain sensation
from the maxillary teeth?
,A. Facial nerve
B. Trigeminal nerve
C. Glossopharyngeal nerve
D. Hypoglossal nerve
The trigeminal nerve (cranial nerve V) provides sensory innervation to the
maxillary and mandibular teeth.
3. What is the maximum recommended dose of 2% lidocaine with 1:100,000
epinephrine for a healthy adult?
A. 200 mg
B. 400 mg
C. 400 mL
D. 500 mg
The MRD for lidocaine with epinephrine in a healthy adult is 500 mg, or about
13 cartridges.
4. Which of the following is an ester local anesthetic?
A. Bupivacaine
B. Procaine
C. Lidocaine
D. Prilocaine
Procaine is an ester, while the others are amides. Esters are more allergenic.
, 5. What is the most common cause of local anesthesia failure in the
mandibular region?
A. Needle breakage
B. Inaccurate needle placement
C. Allergy to anesthetic
D. Vasoconstrictor reaction
Improper technique and inaccurate placement of the needle often result in
failed anesthesia, especially with the IAN block.
6. Which injection targets the mental nerve?
A. PSA nerve block
B. IA nerve block
C. Mental nerve block
D. Buccal nerve block
The mental nerve block anesthetizes the chin, lower lip, and labial mucosa
anterior to the mental foramen.
7. What is the pH of most commercial local anesthetic solutions with
epinephrine?
A. 9.0
B. 3.5
C. 7.4
D. 11.0
Questions and Correct Answers | Latest
Update 2025/2026 Questions are based on the
most commonly tested topics such as
pharmacology, anatomy, techniques,
complications, and patient safety.
1. Which of the following local anesthetics is safest for a patient with a
documented sulfa allergy?
A. Articaine
B. Lidocaine
C. Mepivacaine
D. Prilocaine
Mepivacaine does not contain para-aminobenzoic acid (PABA) derivatives and is
safe for sulfa-allergic patients.
2. Which cranial nerve is primarily responsible for carrying pain sensation
from the maxillary teeth?
,A. Facial nerve
B. Trigeminal nerve
C. Glossopharyngeal nerve
D. Hypoglossal nerve
The trigeminal nerve (cranial nerve V) provides sensory innervation to the
maxillary and mandibular teeth.
3. What is the maximum recommended dose of 2% lidocaine with 1:100,000
epinephrine for a healthy adult?
A. 200 mg
B. 400 mg
C. 400 mL
D. 500 mg
The MRD for lidocaine with epinephrine in a healthy adult is 500 mg, or about
13 cartridges.
4. Which of the following is an ester local anesthetic?
A. Bupivacaine
B. Procaine
C. Lidocaine
D. Prilocaine
Procaine is an ester, while the others are amides. Esters are more allergenic.
, 5. What is the most common cause of local anesthesia failure in the
mandibular region?
A. Needle breakage
B. Inaccurate needle placement
C. Allergy to anesthetic
D. Vasoconstrictor reaction
Improper technique and inaccurate placement of the needle often result in
failed anesthesia, especially with the IAN block.
6. Which injection targets the mental nerve?
A. PSA nerve block
B. IA nerve block
C. Mental nerve block
D. Buccal nerve block
The mental nerve block anesthetizes the chin, lower lip, and labial mucosa
anterior to the mental foramen.
7. What is the pH of most commercial local anesthetic solutions with
epinephrine?
A. 9.0
B. 3.5
C. 7.4
D. 11.0
