Inferior alveolar nerve block

When administering the inferior alveolar block, the target area lies on the medial surface of the mandibular ramus at the inferior tip of the pterygomandibular triangle and adjacent to where the inferior alveolar nerve exits the mandible. The needle is inserted parallel to the mandibular occlusal plane as shown, with the syringe overlying the first and second premolars (colored green) on the opposite side of the mandible; the syringe is rotated approximately 30 degrees (in a horizontal plane) during the injection so that when the injection is complete, the syringe barrel overlies the incisors.