The inferior alveolar artery accompanies the inferior alveolar nerve through the mandibular canal, supplying the lower teeth, bone, and gingiva. It exits at the mental foramen as the mental artery supplying the chin and lower lip. Knowledge of its course is essential in mandibular surgery. Inferior alveolar canal anatomy is assessed on panoramic radiograph before mandibular osteotomies, implant placement, and third molar surgery.
| Origin | Maxillary artery (first part) |
|---|---|
| Course | Descends with the inferior alveolar nerve through the mandibular foramen into the inferior alveolar canal, exits at the mental foramen as the mental artery |
| Branches |
|
The inferior alveolar neurovascular bundle position in the mandibular canal determines safe zones for implant placement and osteotomy cuts. Sagittal split osteotomy for jaw advancement requires preserving the inferior alveolar nerve within the canal. The inferior alveolar artery's position on cone beam CT guides implant depth to avoid neurovascular injury.
Iatrogenic damage during mandibular surgery producing lower lip numbness and bleeding managed with hemostasis and nerve monitoring.
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