Nasal and jaw nerve block anesthesia puncture needle injection method

Nasopalatine nerve block anesthesia

Anesthetic is injected into the anterior palatal hole (incisor hole) to anesthetize the nasopalatine nerve, so it is also called anterior palatal hole injection.

The anatomical position of the anterior palatal foramen is at the intersection of the line between the left and right canines and the midline of the palate. The surface is covered by a fusiform palatal papilla. For those with missing anterior teeth, refer to the frenulum, 0.5cm behind the alveolar ridge is the palatal papilla.

Injection method: The patient’s head is tilted back, the mouth is wide open, the injection needle is inserted into the mucosa from the side edge of the palatal papilla, and then the needle is swung to the midline so that it is parallel to the long axis of the central incisor, and advanced about 0.5cm back and upward. Enter the anterior palatal hole. The tissue in this area is dense, and a lot of pressure is required when injecting anesthetics. The general injection volume is 0.25-0.5ml.

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