2026 | 100 Advanced Questions & Answers
with Detailed Rationales | Integrated
National Board Dental Examination Prep &
Study Guide
1. A 58-year-old patient with poorly controlled hypertension presents for
extraction of a nonrestorable mandibular molar. His blood pressure is
182/112 mmHg, confirmed on repeat measurement. He is asymptomatic.
What is the most appropriate management?
A. Proceed with extraction using minimal epinephrine
B. Proceed with extraction under nitrous oxide sedation
C. Defer elective treatment and refer for medical evaluation
D. Administer oral antihypertensive medication in the dental office
Answer: Defer elective treatment and refer for medical evaluation
Rationale: A blood pressure of 182/112 mmHg represents severe hypertension
and warrants postponement of elective dental treatment, particularly invasive
,procedures. The patient should be medically evaluated and his blood pressure
controlled before elective treatment.
2. A patient reports taking warfarin for a mechanical heart valve and requires
extraction of one tooth. Which initial laboratory value is most relevant to
assessing bleeding risk?
A. Platelet count
B. INR
C. Bleeding time
D. aPTT
Answer: INR
Rationale: Warfarin primarily affects the vitamin K–dependent extrinsic
coagulation pathway, and its therapeutic effect is monitored using the
international normalized ratio (INR). The dentist should coordinate with the
patient's physician when necessary rather than independently discontinuing
anticoagulation.
3. A patient with a history of infective endocarditis requires extraction of a
tooth. Which approach is appropriate?
A. No antibiotic prophylaxis is ever indicated
B. Give antibiotic prophylaxis when the patient meets current high-risk cardiac
criteria
C. Stop all anticoagulants before treatment
D. Prescribe antibiotics for 7 days after extraction
Answer: Give antibiotic prophylaxis when the patient meets current high-risk
cardiac criteria
Rationale: A previous history of infective endocarditis places a patient in a high-
risk cardiac category for which antibiotic prophylaxis is recommended before
certain dental procedures involving manipulation of gingival tissue or the
periapical region.
, 4. A patient develops wheezing, facial swelling, hypotension, and respiratory
distress immediately after administration of a local anesthetic containing an
anesthetic agent and vasoconstrictor. What is the priority intervention if
anaphylaxis is suspected?
A. Oral diphenhydramine
B. Intramuscular epinephrine
C. Intravenous corticosteroid
D. Albuterol only
Answer: Intramuscular epinephrine
Rationale: Epinephrine is the first-line treatment for anaphylaxis because it
rapidly reverses airway edema, bronchospasm, and cardiovascular collapse.
Antihistamines and corticosteroids are adjunctive therapies and must not delay
epinephrine.
5. A patient becomes pale, sweaty, nauseated, and briefly loses consciousness
during an injection. His pulse is slow and he rapidly improves when placed
supine. What is the most likely diagnosis?
A. Anaphylaxis
B. Acute hypoglycemia
C. Vasovagal syncope
D. Myocardial infarction
Answer: Vasovagal syncope
Rationale: Vasovagal syncope commonly presents with pallor, diaphoresis,
nausea, bradycardia, and transient loss of consciousness. Supine positioning
helps restore cerebral perfusion.
6. A patient with diabetes becomes confused, tremulous, and diaphoretic
during a prolonged dental appointment. What is the most appropriate
immediate treatment if the patient is conscious and able to swallow?
, A. Administer oral glucose
B. Administer insulin
C. Administer epinephrine
D. Place the patient in Trendelenburg position only
Answer: Administer oral glucose
Rationale: The presentation is consistent with hypoglycemia. A conscious patient
capable of swallowing should receive a rapidly absorbed carbohydrate, such as
glucose tablets or juice. Insulin would worsen the condition.
7. A patient with asthma develops acute bronchospasm during treatment.
Which medication is most appropriate for immediate management?
A. Sublingual nitroglycerin
B. Inhaled short-acting beta-2 agonist
C. Oral antibiotic
D. Aspirin
Answer: Inhaled short-acting beta-2 agonist
Rationale: An inhaled short-acting bronchodilator such as albuterol is the
standard immediate treatment for an acute asthma exacerbation. Severe or
refractory attacks require emergency medical assistance.
8. A patient reports crushing substernal chest pain radiating to the left arm
while receiving dental treatment. What should the dental team do first?
A. Continue treatment to avoid anxiety
B. Stop treatment and activate emergency medical services
C. Give the patient oral antibiotics
D. Place the patient prone
Answer: Stop treatment and activate emergency medical services
Rationale: The symptoms are concerning for acute coronary syndrome. Dental
treatment should stop immediately, emergency medical services should be