FREE ADEX Dental Hygiene Local Anesthesia Administration Questions and Answers

Question 1

A 35-year-old patient with a history of hypertension controlled by medication requires localized anesthesia for scaling and root planing.
Which local anesthetic agent would be the most appropriate choice, considering its cardiovascular safety profile?

Accepted Answer

Mepivacaine 3% plain

Answer

Lidocaine with epinephrine 1:50,000

Answer

Bupivacaine 0.5% with epinephrine 1:200,000

Answer

Articaine 4% with epinephrine 1:100,000

Question 2

Which of the following is the most common cause of a 'burning' sensation upon injection of local anesthetic?

Accepted Answer

Rapid injection of the anesthetic solution

Answer

Anesthetic solution being too cold

Answer

Expired anesthetic solution

Answer

Needle striking a blood vessel

Question 3

During the administration of a local anesthetic, the dental hygienist aspirates and observes blood in the anesthetic cartridge. What is the immediate and most appropriate next step?

Accepted Answer

Withdraw the needle slightly, re-aspirate, and if negative, proceed with the injection.

Answer

Continue with the injection, but inject slower.

Answer

Immediately remove the needle and discard the cartridge.

Answer

Change to a new cartridge and inject in a different location.

Question 4

A patient reports experiencing a temporary facial paralysis, including drooping of the eyelid and corner of the mouth, immediately following an inferior alveolar nerve block. Which of the following is the most likely cause of this complication?

Accepted Answer

Injection of anesthetic solution into the parotid gland.

Answer

Allergic reaction to the local anesthetic.

Answer

Needle trauma to the facial nerve.

Answer

Overdose of the anesthetic solution.

Question 5

Which component of the local anesthetic cartridge prevents the oxidation of the vasoconstrictor?

Accepted Answer

Sodium bisulfite

Answer

Sodium chloride

Answer

Methylparaben

Answer

Distilled water

Question 6

When administering a supraperiosteal (infiltration) injection in the maxillary arch, where should the needle tip ideally be deposited?

Accepted Answer

At or above the apex of the tooth, close to the periosteum.

Answer

Directly into the periodontal ligament space.

Answer

Apical to the apex of the tooth.

Answer

Deep into the palatal tissue.

A 35-year-old patient with a history of hypertension controlled by medication requires localized anesthesia for scaling and root planing.Which local anesthetic agent would be the most appropriate choice, considering its cardiovascular safety profile?

A 35-year-old patient with a history of hypertension controlled by medication requires localized anesthesia for scaling and root planing.
Which local anesthetic agent would be the most appropriate choice, considering its cardiovascular safety profile?