Replanted Tooth Vitality Assessment — NDEB AFK MCQ

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ModerateEndodonticsReplanted Tooth Vitality AssessmentNDEB AFK

Which investigation is used to assess the vitality of an avulsed and replanted tooth at follow-up?

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Correct answer: C — Cold test (ethyl chloride or Endo-Frost)

Cold testing (using ethyl chloride spray, Endo-Frost, or CO₂ snow) is the most commonly used sensibility test for follow-up assessment of replanted teeth. It evaluates nerve function recovery. However, replanted teeth may show delayed or absent response to sensibility testing for months, particularly in young teeth with open apices undergoing revascularisation. Radiographic follow-up (for signs of resorption, periapical pathology) is also essential. Laser Doppler flowmetry provides the most accurate vitality assessment.

Reference: IADT – Guidelines for Management of Traumatic Dental Injuries, 2020