* The most common adverse effect of this injection is accidental self-inflicted trauma after the procedure, either by biting the lip or tongue or by thermal burn caused by inadvertent drinking of fluid that is too hot. This classically occurs in children or those with learning disability. * A blood vessel may be punctured accidentally and a hematoma or "blood blister" may occur that will heal over time. * If needle is positioned too posteriorly, anesthetic may be put into parotid gland, that may cause transient facial paralysis of the facial nerve or cranial Nerve VII (7). Symptoms of this temporary loss of the use of the muscles of facial expression include the inability to close the eyelid and the drooping of the labial commissure on the affected side for a few hours. * Also if the needle is placed too medially the medial pterygoid muscle can be injected, resulting in trismus. * The sphenomandibular ligament may act as a barrier to the agent if the injection is given too shallow and the lingual nerve is only anesthetized. * This injection can rarely cause needle tract infections of the pterygomandibular space. This is because the mouth contains many types of bacteria which are normally harmless by virtue of the physical barrier that the mucosa presents. However, if they are inoculated into the tissues during an injection, they can become pathogenic (disease causing).
Inferior alveolar nerve anaesthesia
Cricopharyngeal myotomy
Retrobulbar block
Occipital nerve block
Intercostal nerve block
Facial nerve decompression
Stapedectomy
Genioglossus advancement