Which anesthetic technique is most appropriate to achieve pulpal anesthesia for the maxillary canine region?

• A. PSA nerve block
• B. Mental nerve block
• C. Infraorbital nerve block
• D. Inferior alveolar nerve block

Answer: (C)

To numb the maxillary canine region, you need to block the nerve supply to the maxillary anterior teeth. The infraorbital nerve carries the anterior superior alveolar fibers that innervate the maxillary incisors and canines. By depositing anesthetic near the infraorbital foramen, you block the infraorbital nerve before it branches into the anterior superior alveolar portion, giving pulpal anesthesia to the canine and the adjacent front teeth, along with the corresponding facial tissues. The other options either target areas outside the maxillary anterior region (such as the posterior teeth or the mandibular nerve branches) or do not reliably anesthetize the canine pulpus. So, this technique is the most appropriate for the canine.