A Comparison of the Anterior Middle Superior Alveolar Nerve Block and Infraorbital Nerve Block for Anesthesia of Maxillary Anterior Teeth

The IONB produced anesthetic success in canine and premolar teeth, with a more rapid onset than that for the AMSA nerve block. Although the AMSA technique was significantly more successful than IONB in attaining incisor anesthesia, it was ineffective for central incisors, as assessed according to rigorous electronic pulp testing. The IONB and AMSA nerve block produced similar levels of injection discomfort.