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Dental Hygiene Local Anesthesia Exam
2026/2027 Actual Exam | 50 Questions with 100%
Verified Answers | Graded A+ Updated Clinical
Standards | Pass Guaranteed - A+ Graded
Section 1: Anatomy and Physiology of Pain
Q1:
Which branch of the trigeminal nerve (CN V) provides sensory innervation to the mandibular
teeth?
A. Ophthalmic branch (V1)
B. Maxillary branch (V2)
C. Mandibular branch (V3) [CORRECT]
D. Facial nerve (CN VII)
Correct Answer: C
Rationale: The mandibular branch (V3) of the trigeminal nerve provides sensory innervation to
the mandibular teeth, lower lip, and chin. Option A (V1) innervates the upper face and eye.
Option B (V2) innervates the maxillary teeth and midface. Option D (CN VII) is motor to facial
muscles.
Q2:
The inferior alveolar nerve is a branch of which nerve?
A. Maxillary nerve (V2)
B. Mandibular nerve (V3) [CORRECT]
C. Facial nerve (CN VII)
D. Lingual nerve
Correct Answer: B
Rationale: The inferior alveolar nerve is a branch of the mandibular division (V3) of the
trigeminal nerve. Option A (V2) gives rise to the infraorbital and posterior superior alveolar
nerves. Option C is motor. Option D is also a branch of V3 but separate.
Q3:
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Which of the following nerves provides sensory innervation to the maxillary anterior teeth?
A. Inferior alveolar nerve
B. Anterior superior alveolar nerve [CORRECT]
C. Lingual nerve
D. Mental nerve
Correct Answer: B
Rationale: The anterior superior alveolar nerve, a branch of the infraorbital nerve (V2),
innervates the maxillary anterior teeth. Option A innervates mandibular teeth. Option C
innervates the tongue. Option D innervates the lower lip and chin.
Q4:
The mental nerve is a terminal branch of which nerve?
A. Inferior alveolar nerve [CORRECT]
B. Lingual nerve
C. Buccal nerve
D. Infraorbital nerve
Correct Answer: A
Rationale: The mental nerve is a terminal branch of the inferior alveolar nerve, providing
sensation to the lower lip and chin. Options B, C, and D are separate branches of the trigeminal
nerve.
Q5:
Which of the following is NOT a branch of the trigeminal nerve (CN V)?
A. Ophthalmic nerve (V1)
B. Maxillary nerve (V2)
C. Mandibular nerve (V3)
D. Facial nerve (CN VII) [CORRECT]
Correct Answer: D
Rationale: The facial nerve (CN VII) is a separate cranial nerve responsible for facial expression
and taste. Options A, B, and C are branches of the trigeminal nerve (CN V).
Q6:
The pterygomandibular space is the anatomical landmark for which local anesthetic injection?
A. Inferior alveolar nerve block (IANB) [CORRECT]
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B. Posterior superior alveolar (PSA) nerve block
C. Greater palatine nerve block
D. Nasopalatine nerve block
Correct Answer: A
Rationale: The pterygomandibular space is the target area for the inferior alveolar nerve block
(IANB), which anesthetizes the mandibular teeth. Options B, C, and D target different nerves
and anatomical locations.
Q7:
Which of the following nerves provides sensory innervation to the pulp of the maxillary first
molar?
A. Middle superior alveolar nerve [CORRECT]
B. Anterior superior alveolar nerve
C. Greater palatine nerve
D. Nasopalatine nerve
Correct Answer: A
Rationale: The middle superior alveolar nerve innervates the maxillary premolars and
mesiobuccal root of the first molar. Option B innervates the anterior teeth. Options C and D
innervate the palate.
Q8:
The lingual nerve provides sensory innervation to which of the following areas?
A. Lower lip and chin
B. Anterior two-thirds of the tongue and floor of the mouth [CORRECT]
C. Buccal mucosa of the mandible
D. Maxillary gingiva
Correct Answer: B
Rationale: The lingual nerve, a branch of the mandibular division (V3), provides sensory
innervation to the anterior two-thirds of the tongue and floor of the mouth. Option A is
innervated by the mental nerve. Option C is innervated by the buccal nerve. Option D is
innervated by the maxillary division (V2).
Section 2: Pharmacology of Local Anesthetics
Q9:
Dental Hygiene Local Anesthesia Exam
2026/2027 Actual Exam | 50 Questions with 100%
Verified Answers | Graded A+ Updated Clinical
Standards | Pass Guaranteed - A+ Graded
Section 1: Anatomy and Physiology of Pain
Q1:
Which branch of the trigeminal nerve (CN V) provides sensory innervation to the mandibular
teeth?
A. Ophthalmic branch (V1)
B. Maxillary branch (V2)
C. Mandibular branch (V3) [CORRECT]
D. Facial nerve (CN VII)
Correct Answer: C
Rationale: The mandibular branch (V3) of the trigeminal nerve provides sensory innervation to
the mandibular teeth, lower lip, and chin. Option A (V1) innervates the upper face and eye.
Option B (V2) innervates the maxillary teeth and midface. Option D (CN VII) is motor to facial
muscles.
Q2:
The inferior alveolar nerve is a branch of which nerve?
A. Maxillary nerve (V2)
B. Mandibular nerve (V3) [CORRECT]
C. Facial nerve (CN VII)
D. Lingual nerve
Correct Answer: B
Rationale: The inferior alveolar nerve is a branch of the mandibular division (V3) of the
trigeminal nerve. Option A (V2) gives rise to the infraorbital and posterior superior alveolar
nerves. Option C is motor. Option D is also a branch of V3 but separate.
Q3:
,2
Which of the following nerves provides sensory innervation to the maxillary anterior teeth?
A. Inferior alveolar nerve
B. Anterior superior alveolar nerve [CORRECT]
C. Lingual nerve
D. Mental nerve
Correct Answer: B
Rationale: The anterior superior alveolar nerve, a branch of the infraorbital nerve (V2),
innervates the maxillary anterior teeth. Option A innervates mandibular teeth. Option C
innervates the tongue. Option D innervates the lower lip and chin.
Q4:
The mental nerve is a terminal branch of which nerve?
A. Inferior alveolar nerve [CORRECT]
B. Lingual nerve
C. Buccal nerve
D. Infraorbital nerve
Correct Answer: A
Rationale: The mental nerve is a terminal branch of the inferior alveolar nerve, providing
sensation to the lower lip and chin. Options B, C, and D are separate branches of the trigeminal
nerve.
Q5:
Which of the following is NOT a branch of the trigeminal nerve (CN V)?
A. Ophthalmic nerve (V1)
B. Maxillary nerve (V2)
C. Mandibular nerve (V3)
D. Facial nerve (CN VII) [CORRECT]
Correct Answer: D
Rationale: The facial nerve (CN VII) is a separate cranial nerve responsible for facial expression
and taste. Options A, B, and C are branches of the trigeminal nerve (CN V).
Q6:
The pterygomandibular space is the anatomical landmark for which local anesthetic injection?
A. Inferior alveolar nerve block (IANB) [CORRECT]
, 3
B. Posterior superior alveolar (PSA) nerve block
C. Greater palatine nerve block
D. Nasopalatine nerve block
Correct Answer: A
Rationale: The pterygomandibular space is the target area for the inferior alveolar nerve block
(IANB), which anesthetizes the mandibular teeth. Options B, C, and D target different nerves
and anatomical locations.
Q7:
Which of the following nerves provides sensory innervation to the pulp of the maxillary first
molar?
A. Middle superior alveolar nerve [CORRECT]
B. Anterior superior alveolar nerve
C. Greater palatine nerve
D. Nasopalatine nerve
Correct Answer: A
Rationale: The middle superior alveolar nerve innervates the maxillary premolars and
mesiobuccal root of the first molar. Option B innervates the anterior teeth. Options C and D
innervate the palate.
Q8:
The lingual nerve provides sensory innervation to which of the following areas?
A. Lower lip and chin
B. Anterior two-thirds of the tongue and floor of the mouth [CORRECT]
C. Buccal mucosa of the mandible
D. Maxillary gingiva
Correct Answer: B
Rationale: The lingual nerve, a branch of the mandibular division (V3), provides sensory
innervation to the anterior two-thirds of the tongue and floor of the mouth. Option A is
innervated by the mental nerve. Option C is innervated by the buccal nerve. Option D is
innervated by the maxillary division (V2).
Section 2: Pharmacology of Local Anesthetics
Q9:
