NBDE Diagnosis and Treatment Planning Questions and Answers

Question 1

A 58-year-old male patient presents for a consultation.
His medical history is significant for type 2 diabetes, hypertension controlled with lisinopril, and a 30-pack-year smoking history.
Intraoral examination reveals generalized moderate periodontitis, multiple carious lesions, and a 1.5 cm, asymptomatic, white, corrugated lesion on the left buccal mucosa that does not wipe off.
Which of the following is the most critical initial step in managing this patient's white lesion?

Accepted Answer

Perform an incisional biopsy.

Answer

Prescribe a topical antifungal medication.

Answer

Recommend immediate smoking cessation.

Answer

Schedule scaling and root planing for the entire mouth.

Question 2

A treatment plan is typically sequenced into several phases. In which phase would emergency procedures, such as incision and drainage of an abscess or extraction of a hopelessly fractured tooth causing severe pain, be performed?

Accepted Answer

Urgent/Acute Phase

Answer

Definitive Phase

Answer

Disease Control Phase

Answer

Maintenance Phase

Question 3

Which of the following is NOT a required component of the informed consent process in dentistry?

Accepted Answer

A guarantee of successful treatment outcomes.

Answer

A discussion of the nature and purpose of the proposed treatment.

Answer

A disclosure of potential risks and complications.

Answer

A presentation of reasonable alternatives to the proposed treatment.

Question 4

A 25-year-old female patient presents with a chief complaint of a painful ulcer on her lower lip that has been present for three days. The ulcer is round, approximately 4mm in diameter, with a yellow-gray floor and a distinct erythematous halo. She reports having similar sores in the past, usually during times of stress. Based on this presentation, what is the most likely diagnosis?

Accepted Answer

Recurrent Aphthous Stomatitis (Minor)

Answer

Primary Herpetic Gingivostomatitis

Answer

Traumatic Ulcer

Answer

Squamous Cell Carcinoma

Question 5

The principle of evidence-based dentistry (EBD) integrates three core components to guide clinical decision-making. These components are the dentist's clinical expertise, the patient's needs and preferences, and which of the following?

Accepted Answer

Systematic assessments of clinically relevant scientific evidence.

Answer

The cost of the proposed treatment.

Answer

The dentist's preferred treatment techniques.

Answer

The policies of the patient's dental insurance provider.

Question 6

A patient with a history of infective endocarditis requires a dental procedure that involves manipulation of gingival tissue. According to American Heart Association (AHA) guidelines, antibiotic prophylaxis is recommended to prevent which potential complication?

Accepted Answer

Bacteremia leading to a recurrence of infective endocarditis.

Answer

Post-operative infection at the surgical site.

Answer

Development of a dental abscess.

Answer

An allergic reaction to dental materials.