Canine fossa

Canine Fossa

Diagram of the canine fossa in the human skull

The canine fossa is a depression located on the external surface of the maxilla in the human skull. It is situated below the infraorbital foramen and above the alveolar process of the maxilla, which houses the roots of the upper teeth.

Anatomy

The canine fossa is named for its position above the canine tooth, which is one of the prominent teeth in the human dentition. This fossa is an important anatomical landmark in the maxillary region and is often used as a reference point in various medical and dental procedures.

Location

The canine fossa is found on the anterior surface of the maxilla, lateral to the nasal cavity. It is bordered superiorly by the infraorbital margin and inferiorly by the alveolar process. Medially, it is adjacent to the nasal aperture, and laterally, it is continuous with the zygomatic process of the maxilla.

Function

The primary function of the canine fossa is to provide space for the roots of the canine teeth. It also serves as an attachment site for the levator anguli oris muscle, which is involved in facial expression, particularly in elevating the angle of the mouth.

Clinical Significance

The canine fossa is clinically significant in several contexts:

• Surgical Access: It is often used as a surgical access point in procedures involving the maxillary sinus, such as the Caldwell-Luc operation.
• Infections: Infections in the canine fossa can lead to complications such as canine space infection, which can affect the surrounding facial structures.
• Dental Procedures: Understanding the anatomy of the canine fossa is crucial for dental professionals when performing extractions or implants in the maxillary region.

Related Pages

• Maxilla
• Infraorbital foramen
• Alveolar process
• Canine tooth
• Maxillary sinus