Inadequate anesthesia in the maxillary incisors is least likely to be caused by:
A) Crossover innervation from the contralateral ASA nerve
B) Nasopalatine innervation
C) Bony obstructions
D) Facial nerve innervation

Question

Quizplus · Accepted Answer

The facial nerve is primarily responsible for motor innervation to the muscles of facial expression and does not provide sensation to the teeth, making it the least likely cause of inadequate anesthesia in the maxillary incisors.

Inadequate Anesthesia in the Maxillary Incisors Is Least Likely to Be