What is the maximum recommended amount of anesthetic solution for a single PSA nerve block?

The maximum recommended amount of anesthetic solution for a single Posterior Superior Alveolar (PSA) nerve block is 0.9 ml. This amount is based on clinical guidelines and considers the effective and safe dosage needed to achieve optimal anesthesia of the targeted area while minimizing the risk of possible adverse effects and systemic toxicity.

The PSA nerve block is designed to anesthetize the maxillary molars and surrounding tissues, and using 0.9 ml allows sufficient coverage for the intended area without exceeding the recommended dosage. Administering more than this amount could increase the risk of potential side effects such as transient neurological symptoms or systemic toxicity, especially if the anesthetic solution inadvertently enters systemic circulation.

In practice, it is essential for practitioners to adhere to these established guidelines to ensure patient safety while also achieving the desired level of anesthesia for effective dental care.