New anatomic intraoral reference for the anesthetic blocking of the anterior and middle maxillary alveolar nerves (infraorbital block).

The superior lateral labial frenum is proposed as a new anatomic reference for the intraoral blocking technique of anesthesia of the anterior and middle superior alveolar nerves (infraorbital). The main advantage of this technique is the constancy of the reference point, independent of the presence or absence of teeth, which other techniques do not offer.