Inferior Alveolar Nerve Block Needle Anesthesia Procedure

Lower alveolar nerve block anesthesia was performed as follows:

First, let the patient supine on the dental chair, adjust the chair position to the appropriate position.

Second, let the patient open the mouth wide, behind the molars, before the lingual palatine arch to find the palatine fold, also known as the pterygomandibular fold. A triangular buccal fat pad can be seen just lateral to the pterygomandibular fold. The tip of the buccal fat pad, which is slightly outward from the midpoint of the pterymandibular ligament, serves as an anatomical marker for injection.

Third, when the patient opened the mouth, the needle was inserted 3-4mm lateral to the pterygomandibular fold. Generally, the syringe is placed at the contralateral mouth Angle, that is, between the first and second premolars, at a 45 degree Angle with the midline before injection. The needle was positioned 1cm above and parallel to the mandibular plane. Then the needle is inserted about 2-2.5cm to reach the bone surface of the mandible. After touching the bone surface, draw back. If no blood is drawn back, 1-1.5mL can be injected to anesthetize the inferior alveolar nerve.

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