Buccinator crest

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Buccinator crest

The buccinator crest is a notable anatomical feature located on the mandible (lower jawbone). It is a ridge that serves as an attachment point for the buccinator muscle, which is a muscle of the facial expression group. The buccinator muscle plays a crucial role in the actions of chewing and swallowing, as well as in the control of the cheeks.

Anatomy

The buccinator crest is found on the inner surface of the mandible, specifically on the alveolar part of the mandible. It is situated near the region where the molar teeth are located. The crest provides a stable attachment for the buccinator muscle, which extends from the pterygomandibular raphe to the orbicularis oris muscle, encircling the mouth.

Function

The primary function of the buccinator crest is to serve as an anchor point for the buccinator muscle. This muscle is essential for maintaining the tension of the cheeks against the teeth, which is important for effective mastication (chewing). Additionally, the buccinator muscle helps in the expulsion of air from the mouth, as seen in actions such as blowing and whistling.

Clinical Significance

The buccinator crest can be of clinical importance in various dental and surgical procedures. For instance, during the extraction of molar teeth or the placement of dental implants, the proximity of the buccinator crest must be considered to avoid damage to the buccinator muscle. Additionally, any trauma or pathology affecting the mandible in the region of the buccinator crest can impact the function of the buccinator muscle, leading to difficulties in chewing and other oral functions.

Related Structures

• Mandible
• Buccinator muscle
• Pterygomandibular raphe
• Orbicularis oris
• Molar teeth

See Also

• Facial muscles
• Mastication
• Cheeks