Which local anesthetic technique is used for upper molars?

The posterior superior alveolar nerve block is the technique specifically indicated for anesthetizing upper molars. This method targets the posterior superior alveolar nerve, which innervates the maxillary molars—particularly the first, second, and often the third molars—along with the surrounding buccal mucosa. By effectively blocking this nerve, the dentist can achieve profound anesthesia necessary for procedures involving these teeth, helping to ensure patient comfort during treatment.

In contrast, the inferior alveolar nerve block is primarily used for lower teeth, particularly the mandibular molars and premolars. The middle superior alveolar nerve block is more suited for the maxillary premolars and possibly the first molar but not the other molars that the posterior superior alveolar nerve innervates. The incisive nerve block, on the other hand, focuses on the anterior and premolar teeth in the mandible and does not directly anesthetize the upper molars. Thus, the posterior superior alveolar nerve block is indeed the most appropriate and precise technique for targeting the upper molars specifically.