FREE NBDE Pharmacology in Dentistry Questions and Answers

Question 1

A 45-year-old patient with a history of hypertension controlled by a non-selective beta-blocker is scheduled for a routine dental procedure requiring local anesthesia.
Which local anesthetic agent should be used with caution due to a potential drug interaction that could lead to a hypertensive crisis?

Accepted Answer

Lidocaine with epinephrine

Answer

Mepivacaine plain

Answer

Prilocaine with felypressin

Answer

Articaine with epinephrine

Question 2

Which of the following classes of antibiotics is most commonly associated with the adverse effect of pseudomembranous colitis (Clostridium difficile-associated diarrhea)?

Accepted Answer

Clindamycin

Answer

Tetracyclines

Answer

Penicillins

Answer

Cephalosporins

Question 3

A patient taking warfarin for atrial fibrillation requires tooth extraction. The dentist is concerned about the risk of excessive bleeding. Which of the following is the most appropriate initial action regarding the patient's anticoagulant medication?

Accepted Answer

Consult with the patient's physician regarding INR management.

Answer

Discontinue warfarin 3 days prior to the extraction.

Answer

Increase the dose of warfarin to improve clotting.

Answer

Proceed with extraction without altering warfarin, but use local hemostatic measures.

Question 4

A patient reports experiencing a severe allergic reaction, including anaphylaxis, to penicillin in the past. If antibiotic prophylaxis is indicated for a dental procedure, which antibiotic would be the most appropriate alternative?

Accepted Answer

Clindamycin

Answer

Amoxicillin

Answer

Cephalexin

Answer

Azithromycin

Question 5

Which of the following drugs is most likely to cause gingival hyperplasia as a common side effect?

Accepted Answer

Nifedipine

Answer

Ibuprofen

Answer

Lisinopril

Answer

Metformin

Question 6

A patient presents with acute pericoronitis around a partially erupted mandibular third molar. The dentist decides to prescribe an antibiotic. Given that the patient is otherwise healthy and has no known allergies, which antibiotic is generally considered the first-line choice for odontogenic infections?

Accepted Answer

Penicillin V

Answer

Tetracycline

Answer

Metronidazole

Answer

Ciprofloxacin