IAN
Pronunciation: I-A-N
Also written as: IAN — inferior alveolar nerve
Acronym for inferior alveolar nerve, the nerve that provides sensation to the lower teeth and lip.
Full Definition
IAN stands for inferior alveolar nerve, a branch of the mandibular division of the trigeminal nerve (cranial nerve V). This nerve runs through the mandibular canal and provides sensory innervation to the mandibular teeth, periodontium, and the skin and mucosa of the lower lip and chin. IAN injury is a significant concern in oral surgery procedures, particularly third molar extractions and implant placement, as damage can result in temporary or permanent numbness.
Usage
Usage note: Always spell out on first use in formal documentation; avoid confusion with IMA (internal mammary artery).
In Context
- "Careful assessment of IAN proximity was conducted prior to the implant placement." — Pre-surgical evaluation report
- "The patient experienced temporary IAN paresthesia following the extraction procedure." — Post-operative complication note