Incisive Nerve Implant Risk — NDEB AFK MCQ

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ModerateOral SurgeryIncisive Nerve Implant RiskNDEB AFK

Which nerve is at risk during placement of an implant in the anterior mandibular region between the mental foramina?

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Correct answer: C — Incisive nerve (anterior continuation of the IAN within bone)

The incisive nerve is the anterior continuation of the inferior alveolar nerve within the mandible after the mental nerve exits at the mental foramen. It runs anteriorly within the interforaminal region of the mandible, supplying the premolars, canines, and incisors. During implant placement in the anterior mandible (interforaminal region), the incisive nerve and its associated blood vessels may be damaged by the implant osteotomy, causing paraesthesia of the lower lip/chin or haemorrhage into the sublingual space (potentially life-threatening if bilateral). Preoperative CBCT assessment of the incisive canal position is recommended.

Reference: Misch – Contemporary Implant Dentistry, 4th ed., 2020