Why Does Inferior Alveolar Nerve Block Anesthetic Needle Injection Sometimes Fail

Inferior alveolar nerve block anesthesia: one shot method (oral method). It is easy to operate and is commonly used in the extraction of mandibular molars by professionals. Attention to operation: needle direction, Angle, height from the tooth edge. Point of entry, depth. Drug dosage, and method of injection. Direction Angle: The syringe is from the upper part of the contralateral 4 and 5 teeth, and the injection needle and the puncture point are at a 45 degree Angle. Height from edge: 1 cm above the third molar. Entry point: buccal fat pad tip. Depth: 2.5-3 cm. Injection: 2ml, back tip slightly back out, while retreating while injection. The alveolar nerve, buccal nerve and lingual nerve were anesthetized respectively. It takes about five minutes to kick in. Individual patients with severe inflammation will affect drug absorption. At this time in the buccal side of the teeth in the injection of a small amount of anesthetic. To effect

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