Local Anesthesia Board Questions
with 100% Correct Answers
Where does the mandibular nerve pass through in the skull? Correct Answer:
Foramen Ovale
Trigeminal nerve (CN V) Correct Answer: V1 ophthalmic (sensory)
V2 maxillary (only sensory)
V3 mandibular (both)
Where nasopalatine nerve passes through Correct Answer: Incisive Foramen
Maxillary division of Trigeminal Nerve is Correct Answer: -V2
-Sensory
Nerve NOT associated with the mandibular nerve branch Correct Answer:
Infraorbital nerve
The IANB anesthetizes which nerves Correct Answer: -inferior alveolar
-lingual nerve
-mental nerve
-does not anesthetize the buccal nerve
Teeth that PSA innervates Correct Answer: 1st, 2nd, and 3rd maxillary molars, but
may not innervate MB root of the maxillary 1st molar
, What injection is needed to anesthetize linguals of max anteriors Correct
Answer: Nasopalatine
What injections are needed to anesthetize the entire palate on one side Correct
Answer: Greater Palatine and Nasopalatine
How far do you insert the needle on an IANB? Correct Answer: 20-25 mm or 3/4
the length of the needle
What happens during depolarization? Correct Answer: Sodium channels open,
Na goes in and K goes out
-tries to get to +40 to have an action potential
What happens during repolarization? Correct Answer: sodium channels close,
Na goes back out and K comess back in
-60 to -90
When do you aspirate? Correct Answer: Right before anesthetic is to be
deposited
Which local anesthetic is metabolized by pseudocholinesterase? Correct
Answer: Esters
Topical anesthetics are least effective on? Correct Answer: Keratinized tissues:
masiticatory mucosa, hard palate
What is true of topical anesthetics? Correct Answer: No systemic problems
Which has the highest occurrence of allergic reactions? Correct Answer: Ester
option; Benzocaine
with 100% Correct Answers
Where does the mandibular nerve pass through in the skull? Correct Answer:
Foramen Ovale
Trigeminal nerve (CN V) Correct Answer: V1 ophthalmic (sensory)
V2 maxillary (only sensory)
V3 mandibular (both)
Where nasopalatine nerve passes through Correct Answer: Incisive Foramen
Maxillary division of Trigeminal Nerve is Correct Answer: -V2
-Sensory
Nerve NOT associated with the mandibular nerve branch Correct Answer:
Infraorbital nerve
The IANB anesthetizes which nerves Correct Answer: -inferior alveolar
-lingual nerve
-mental nerve
-does not anesthetize the buccal nerve
Teeth that PSA innervates Correct Answer: 1st, 2nd, and 3rd maxillary molars, but
may not innervate MB root of the maxillary 1st molar
, What injection is needed to anesthetize linguals of max anteriors Correct
Answer: Nasopalatine
What injections are needed to anesthetize the entire palate on one side Correct
Answer: Greater Palatine and Nasopalatine
How far do you insert the needle on an IANB? Correct Answer: 20-25 mm or 3/4
the length of the needle
What happens during depolarization? Correct Answer: Sodium channels open,
Na goes in and K goes out
-tries to get to +40 to have an action potential
What happens during repolarization? Correct Answer: sodium channels close,
Na goes back out and K comess back in
-60 to -90
When do you aspirate? Correct Answer: Right before anesthetic is to be
deposited
Which local anesthetic is metabolized by pseudocholinesterase? Correct
Answer: Esters
Topical anesthetics are least effective on? Correct Answer: Keratinized tissues:
masiticatory mucosa, hard palate
What is true of topical anesthetics? Correct Answer: No systemic problems
Which has the highest occurrence of allergic reactions? Correct Answer: Ester
option; Benzocaine
