Maxillary first premolar

Maxillary first premolar

The Maxillary first premolar is one of the teeth located in the upper jaw, also known as the maxilla. It is the fourth tooth from the midline of the mouth. The maxillary first premolar is a type of premolar, a class of teeth that are unique to mammals.

Anatomy

The maxillary first premolar typically has two cusps, a buccal and a palatal, with the buccal cusp being the larger of the two. It has two roots, a buccal and a palatal root, which is a distinguishing feature from the maxillary second premolar, which usually has only one root.

Function

The primary function of the maxillary first premolar is to assist in the mastication, or chewing, of food. It does this by working in conjunction with the other teeth to tear and grind food into smaller pieces.

Development

The maxillary first premolar typically erupts between the ages of 10 and 11, following the eruption of the first molars and incisors. The roots are usually fully formed by the age of 13.

Clinical Significance

The maxillary first premolar is often the tooth of choice for extraction when orthodontic treatment is required to create space in the mouth. This is due to its position in the mouth and the fact that it has two roots.

See Also

• Dental anatomy
• Human tooth
• Premolar