DANB CDA Dental Pharmacology

Question 1

What chemical classification does lidocaine belong to?

Accepted Answer

Amide

Answer

Lidocaine is an amide-type local anesthetic, metabolized by the liver rather than by plasma pseudocholinesterase.

Question 2

What is the primary reason epinephrine is added to local anesthetic solutions?

Accepted Answer

To prolong anesthesia duration and reduce systemic absorption

Answer

Epinephrine is a vasoconstrictor that slows local blood flow, prolonging anesthetic action and reducing systemic toxicity.

Question 3

Which antibiotic is the first-line choice for infective endocarditis prophylaxis before dental procedures, per AHA guidelines?

Accepted Answer

Amoxicillin

Answer

Amoxicillin 2 g orally 30–60 minutes before the procedure is the current American Heart Association recommendation.

Question 4

What does the term 'analgesic' mean in dental pharmacology?

Accepted Answer

A drug that relieves pain

Answer

Analgesics are medications designed to relieve pain without causing loss of consciousness.

Question 5

Which local anesthetic formulation is most appropriate for a patient with a documented sulfite allergy when profound anesthesia is required?

Accepted Answer

Mepivacaine 3% plain

Answer

Mepivacaine plain contains no vasoconstrictor and therefore no bisulfite preservative, making it safe for sulfite-sensitive patients.

DANB CDA Test Practice Test