What does the Posterior Superior Alveolar Block numb?

The Posterior Superior Alveolar (PSA) Block is specifically designed to anesthetize the maxillary molar teeth, particularly the distobuccal and lingual surfaces of the maxillary molars. This block is particularly effective in numbing the third molar and the second molar, thus providing relief from pain during dental procedures involving these areas. By targeting the PSA nerve, which supplies sensation to the maxillary molars, the block ensures that both the distobuccal and lingual surfaces are effectively numbed, allowing for a pain-free experience during treatment.

In contrast, other options do not encompass the full scope of areas targeted by the PSA Block. For example, focusing solely on incisors or bicuspids overlooks the primary purpose of the PSA. The block does not numb the incisors, which are usually managed by the Anterior Superior Alveolar (ASA) block. Lastly, while it does affect some buccal tissues, the primary goal of the PSA is to provide anesthesia specifically to the molar teeth rather than exclusively to the buccal tissues.