INBDE Study Guide 2026

Everything you need to pass the INBDE exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.

📋 INBDE Exam Format at a Glance

500
Questions
750 min
Time Limit
75.00%
Passing Score

📚 INBDE Topics to Study (23)

✍️ Sample INBDE Questions & Answers

1. Protrusive records in complete denture fabrication are used to set the:
Condylar guidance angle on the articulator

Protrusive records allow the clinician to program the condylar guidance angle (Hanau's formula: H = P/8 + 12) on the semi-adjustable articulator.

2. Which type of dentin is formed in response to irritation or injury?
Tertiary (reparative) dentin

Tertiary (reparative) dentin is produced by newly differentiated odontoblast-like cells as a protective response to local stimuli such as caries or trauma.

3. Which cells are primarily responsible for producing dentin?
Odontoblasts

Odontoblasts are the cells that synthesize and secrete the organic matrix of dentin throughout life.

4. Obturation of a root canal is considered acceptable when:
Fill material ends 0–2 mm short of the radiographic apex with no voids

Ideal obturation terminates 0–2 mm short of the radiographic apex (at the apical constriction) with well-adapted gutta-percha and minimal sealer without voids.

5. Residual ridge resorption after tooth extraction follows a pattern that is:
Greater in the mandible in all dimensions

The mandibular ridge typically resorbs 4 times faster than the maxilla overall, and resorption is greater in all dimensions in the mandible, making mandibular dentures more challenging.

6. Which benzodiazepine is most commonly used for IV conscious sedation in dentistry?
Midazolam

Midazolam is preferred for IV conscious sedation in dentistry due to its rapid onset, short duration, water solubility, and superior amnestic properties.

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INBDE Study Guide 2026 — Exam Format, Topics & Practice Questions