Internal carotid artery dissection after inferior alveolar nerve block for third molar dental care presented as hypoglossal nerve palsy.

Cervicocephalic artery dissections occurring during dental care have exceptionally been reported. We describe a case of internal carotid artery dissection, presenting as hypoglossal nerve palsy, occurring immediately after difficult inferior alveolar nerve anesthetic block for third inferior molar dental care. Carotid dissection was successfully treated with anticoagulation therapy while hypoglossal nerve palsy recovered with carotid dissection shrinkage.