Mental tubercle

Mental tubercle is a small prominence on the anterior part of the mandible, or lower jawbone. It is located on either side of the mental protuberance, which is the forward-most point of the mandible. The mental tubercle is one of several anatomical features of the mandible, which also include the mental foramen, mandibular condyle, and mandibular notch.

Etymology

The term "mental tubercle" comes from the Latin mentum, meaning "chin", and tuberculum, meaning "small swelling or bump". The mental tubercle is so named because it is a small bump located on the chin.

Anatomy

The mental tubercle is located on the anterior, or front, part of the mandible. It is found on either side of the mental protuberance, which is the point of the chin that protrudes forward the most. The mental tubercle is more prominent, or sticks out more, in males than in females.

The mental tubercle is one of several features of the mandible. Others include the mental foramen, which is an opening in the mandible that allows nerves and blood vessels to pass through; the mandibular condyle, which is the rounded end of the mandible that articulates, or forms a joint, with the temporal bone of the skull; and the mandibular notch, which is a deep groove in the upper edge of the mandible.

Clinical significance

The mental tubercle can be used as a landmark in oral and maxillofacial surgery. For example, it can help in the placement of dental implants or in the repair of fractures of the mandible. It can also be used in forensic dentistry to help identify individuals based on the unique features of their mandible.

Related terms

• Mental protuberance: The forward-most point of the mandible, located in the center of the chin.
• Mental foramen: An opening in the mandible that allows nerves and blood vessels to pass through.
• Mandibular condyle: The rounded end of the mandible that articulates with the temporal bone of the skull.
• Mandibular notch: A deep groove in the upper edge of the mandible.