Where is the posterior superior alveolar nerve?

It arises from the infra-orbital nerve in the pterygopalatine fossa just before it enters the inferior orbital fissure, and descends into the pterygomaxillary fissure. From here it or several individual branches enter the maxilla via alveolar canals.

What does the superior alveolar nerve do?

Alveolar nerves (anterior, middle, and posterior superior alveolar nerves)—provides sensory innervation to all of the upper teeth in the maxilla, as well as the gingiva.

What does the posterior superior alveolar nerve?

The posterior superior alveolar nerve innervates the second and third maxillary molars, and two of the three roots of the maxillary first molar (all but the mesiobuccal root).

Is inferior alveolar nerve damage permanent?

Management. Studies have shown that, in more than 85% of cases, nerve damage resulting from administration of an inferior alveolar nerve block has resolved within 8 weeks of the injury, although persistence of symptoms beyond 8 weeks is associated with a poorer prognosis.

Where is the mental nerve?

The mental nerve is a sensory nerve that provides feeling to your lower lip, the front of your chin, and a portion of your gums. It’s one of the branches of the inferior alveolar nerve, which is a branch of the trigeminal nerve’s mandibular division.

What percentage of people have a middle superior alveolar nerve?

Anatomical studies on dissection of cadavers have found the presence of the MSA nerve in the range of 30-72%, and when it is absent, its innervation is supplied from a plexus formed by the ASA and the posterior superior alveolar nerves.

How long does it take for inferior alveolar nerve to heal?

In most cases, complete recovery occurs 6 to 8 weeks after the trauma, although it may take up to 24 months.

Is posterior superior alveolar nerve block?

The posterior superior alveolar nerve (PSAN) block is a dental nerve block used for profound anesthesia of the maxillary molars.