Which statement is true regarding nasopalatine nerve block targeting?

Which statement is true regarding nasopalatine nerve block targeting?

• A. It targets the incisive foramen
• B. It anesthetizes the buccal mucosa of premolars
• C. It requires only a single injection in all cases
• D. It anesthetizes the posterior palate

Answer: (A)

The key idea is where the nasopalatine nerve block is aimed. The nasopalatine nerve emerges at the incisive foramen, so injecting near that opening places the anesthetic where the nerve fibers for the anterior hard palate and the palatal mucosa in the maxillary anterior region are blocked. That’s why this block selectively anesthetizes the palatal tissues in front of the canine region.

This block does not numb the buccal mucosa of the premolars—that area is innervated from the buccal/long buccal or other branches on the cheek side, not the nasopalatine nerve. It also isn’t guaranteed to be a single-injection solution in every patient, since anatomical variations can affect anesthesia success. And it doesn’t anesthetize the posterior palate, which is supplied by the greater palatine nerve.