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Understanding the Infratemporal Fossa: Mandibular Nerve and Its Clinical Significance

The infratemporal fossa is a complex anatomical space crucial in dental and maxillofacial procedures. It is bounded by the lateral pterygoid muscle laterally, the medial pterygoid muscle medially, and the maxilla anteriorly. Key structures within this fossa include the mandibular nerve's trunk and its divisions, the buccal nerve, and important ganglia like the otic and submandibular. Awareness of these anatomical features is essential for managing injuries, performing dental anesthesia, and understanding conditions affecting jaw function.

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Understanding the Infratemporal Fossa: Mandibular Nerve and Its Clinical Significance

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  1. INFRATEMPORAL FOSSA MANDIBULAR NERVE

  2. MASSETER & TEMPORALIS

  3. BOUNDARIES ROOF MEDIAL WALL ANTERIOR WALL LATERAL WALL

  4. CONTENTS • Sphenomandibular ligament • Lateral pterygoid: upper & lower heads • Medial pterygoid: superficial & deep heads

  5. MANDIBULAR NERVE trunk and anterior division Trigeminal ganglion Meningeal nerve To tensor tympani Deep temporal ns Nerve to lat pterygoid To tensor palati Buccal nerve u To masseter

  6. Posterior division Auriculotemporal au Chorda tympani Lingual nerve Inferior alveolar To mylohyoid Incisive nerve Mental nerve

  7. CHORDA TYMPANI Chorda tympani Lingual nerve Submandibular ganglion Sublingual gland Submandibular gland

  8. OTIC GANGLION

  9. APPLIED • Lingual nerve injury • Dental anaesthesia

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