Posterior superior alveolar nerve
Updates to Article Attributes
The posterior superior alveolar nerve, also known as the posterior superior dental nerve, is the first branch of the infra-orbital nerve, from the maxillary division of the trigeminal nerve.
It leaves It is the inferolateral aspectfirst of the extraconal space oforbit through
Gross anatomy
It arises from the zygomaticofacial foramen and pierceslateral fibrespterygopalatine 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. Terminal dental branches enter the apical foramina at the dental roots.
The nerves supply the maxillary sinus, posterior maxillary oral mucosa and the maxillary molar teeth apart from the mesiobuccal root of the first maxillary molar tooth, which is supplied by the middle superior alveolar nerve muscle to.
Variant anatomy
When the middle superior alveolar nerve is absent, the posterior superior alveolar nerve will supply the skin overall the zygomatic archthe upper cheek (the skin of the 'malar region')premolars.
-<p>The <strong>posterior superior alveolar nerve</strong> is the first branch of the <a title="Infra-orbital nerve" href="/articles/infra-orbital-nerve">infra-orbital nerve</a>, from the maxillary division of the <a href="/articles/trigeminal-nerve">trigeminal nerve</a>.</p><p> It leaves the inferolateral aspect of the <a href="/articles/extraconal-space">extraconal space</a> of the <a href="/articles/orbit">orbit</a> through the <a href="/articles/zygomaticofacial-foramen">zygomaticofacial foramen</a> and pierces the lateral fibres of the <a href="/articles/orbicularis-oculi">orbicularis oculi</a> muscle to supply the skin over the <a href="/articles/zygomatic-arch">zygomatic arch</a>and the upper cheek (the skin of the 'malar region').</p>- +<p>The <strong>posterior superior alveolar nerve</strong>, also known as the <strong>posterior superior dental nerve</strong>, is the first branch of the <a href="/articles/infra-orbital-nerve">infra-orbital nerve</a>, from the maxillary division of the <a href="/articles/trigeminal-nerve">trigeminal nerve</a>. It is the first of the superior alveolar nerves and contributes to the superior dental plexus.</p><h4>Gross anatomy</h4><p>It arises from the infra-orbital nerve in the <a href="/articles/pterygopalatine-fossa">pterygopalatine fossa</a> just before it enters the <a href="/articles/inferior-orbital-fissure">inferior orbital fissure</a>, and descends into the <a href="/articles/pterygomaxillary-fissure">pterygomaxillary fissure</a>. From here it or several individual branches enter the maxilla via alveolar canals. Terminal dental branches enter the apical foramina at the dental roots.</p><p>The nerves supply the <a href="/articles/maxillary-sinus">maxillary sinus</a>, posterior maxillary oral mucosa and the maxillary molar <a href="/articles/teeth">teeth</a> apart from the mesiobuccal root of the first maxillary molar tooth, which is supplied by the <a href="/articles/middle-superior-alveolar-nerve">middle superior alveolar nerve</a>.</p><h4>Variant anatomy</h4><p>When the middle superior alveolar nerve is absent, the posterior superior alveolar nerve will supply all the molars and premolars.</p>
References changed:
- 3. Last's anatomy, regional and applied. Churchill Livingstone. ISBN:044304662X. <a href="http://books.google.com/books?vid=ISBN044304662X">Read it at Google Books</a> - <a href="http://www.amazon.com/gp/product/044304662X">Find it at Amazon</a><span class="auto"></span>
- 2. Moore KL, Agur AMR, Dalley AF. Clinically oriented anatomy. LWW. ISBN:1451119453. <a href="http://books.google.com/books?vid=ISBN1451119453">Read it at Google Books</a> - <a href="http://www.amazon.com/gp/product/1451119453">Find it at Amazon</a><span class="auto"></span>
- 1. Robert H. Whitaker, Neil R. Borley. Instant Anatomy. <a href="https://books.google.co.uk/books?vid=ISBN9780632054039">ISBN: 9780632054039</a><span class="ref_v4"></span>
Systems changed:
- Head & Neck
Sections changed:
- Anatomy
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