Injection technique for inferior alveolar nerve block anesthesia

Generally, inferior alveolar nerve block anesthesia is commonly used for surgical extraction of mandibular teeth and typically involves three procedural steps. The specific procedure is as follows:

1. Locate the injection site: with the mouth widely open, this point is found at the intersection approximately 3–4 mm lateral to the pterygomandibular fold, along the line connecting the posterior teeth of the upper and lower jaws.

2. Disinfect the buccal injection area using iodophor.

3. Position the syringe at the contralateral oral commissure, between the first and second premolars, angling the syringe 45° relative to the midline.

4. The needle should be positioned 1 cm above the occlusal plane of the mandibular teeth and parallel to it. Insert the needle 1–2 mm lateral to the tip of the buccal fat pad to a depth of approximately 2.5 cm.

5. After confirming no blood return upon aspiration, inject 1–1.5 mL of anesthetic solution.

This procedure requires professional expertise. To avoid injury, injections should be performed under the guidance of a qualified healthcare provider. Maintain good daily habits and avoid spicy or irritating foods to promote proper healing.