Uncomfortably Numb

Question: A 34 year old female undergoes uncomplicated septoplasty and returns 1 week later for splint removal. She is very pleased with the effect on her nasal obstruction and has no pain.  However, she notes complete anesthesia of her central and lateral incisors.  What is the most likely cause of her symptoms? [Answer will be posted with next week's new question]

Answer to last week's question, "Kid Cysts" (July 10, 2017)

Type 1 branchial cleft cyst, Work type II.