Free INBDE Practice Test

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An explanation after question one, then a complete Patient Box case. Remaining explanations appear with your result. Time shown is an estimate, not a limit.

Question 1 of 12FK1 — Molecular, biochemical, cellular, and systems-level development, structure, and function

A 34-year-old man has a lower first molar with irreversible pulpitis, a swollen tender vestibule and pain on percussion. Two inferior alveolar blocks with lidocaine have left the tooth sensitive to instrumentation. He asks why the injections are not working. What best explains the failed block?

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INBDE preparation

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