Pterygomandibular space

Pterygomandibular Space

The Pterygomandibular Space is an anatomical area located in the oral cavity. It is a potential space that is clinically significant in dentistry, particularly in the administration of local anesthesia.

Etymology

The term "Pterygomandibular" is derived from the Greek words "pteryx" meaning wing and "mandibula" meaning jaw. This term refers to the anatomical location of this space, which is between the pterygoid process of the sphenoid bone and the mandible.

Anatomy

The Pterygomandibular Space is a triangular-shaped space located between the mandible and the medial pterygoid muscle. It is bounded anteriorly by the pterygomandibular raphe, posteriorly by the parotid gland, medially by the medial pterygoid muscle, and laterally by the mandible. The space contains the inferior alveolar nerve, the lingual nerve, and the sphenomandibular ligament.

Clinical Significance

The Pterygomandibular Space is of particular importance in dentistry. It is the site where local anesthetic is often administered prior to dental procedures, specifically those involving the lower teeth. This is known as an inferior alveolar nerve block. The anesthetic is injected into the Pterygomandibular Space to numb the area and prevent pain during the procedure.

Related Terms

• Inferior Alveolar Nerve Block: A type of local anesthesia used in dentistry that involves the injection of anesthetic into the Pterygomandibular Space.
• Pterygomandibular Raphe: A ligamentous band of tissue that forms the anterior boundary of the Pterygomandibular Space.
• Sphenomandibular Ligament: A ligament located within the Pterygomandibular Space.

See Also

• Oral Anatomy
• Local Anesthesia in Dentistry

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Pterygomandibular Space

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  Gray's Anatomy illustration of the pterygomandibular space

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  Diagram showing the masticator space