Post-Extraction IAN Assessment — NDEB AFK MCQ

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ModerateOral SurgeryPost-Extraction IAN AssessmentNDEB AFK

Which investigation should be performed first if a patient reports altered sensation of the lower lip following mandibular third molar extraction?

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Correct answer: C — Detailed neurosensory examination with mapping of the affected area

Following a reported IAN sensory disturbance after third molar extraction, a detailed clinical neurosensory examination should be performed first. This includes mapping the area of altered sensation (anaesthesia, hypoaesthesia, hyperaesthesia, dysaesthesia), testing light touch, pinprick, thermal sensitivity, and two-point discrimination. Documentation of the extent and severity guides management (observation vs. referral for microsurgical repair). Most IAN injuries from extractions are neuropraxia or axonotmesis that recover spontaneously within weeks to months.

Reference: Hupp – Contemporary Oral and Maxillofacial Surgery, 7th ed., 2019