Hematoma - A Complication of Posterior Superior Alveolar Nerve Block

The administration of anesthesia in dentistry is necessary to prevent pain in specific area of the oral cavity which is accomplished by blocking the branches of the trigeminal nerve. Posterior superior alveolar nerve block is most commonly used for the surgical procedures, extraction or root canal treatment of the maxillary molars (with possible exception of mesiobuccal root of maxillary first molar) and buccal soft tissues.