Jaw

Jaw

The jaw is a set of bones that forms the structure around the mouth and includes the mandible and maxilla. These bones hold the teeth and play a key role in speech, eating, and facial expression.

Anatomy

The human jaw consists of two main parts. The upper part is the maxilla which is fixed and does not move. The lower part is the mandible, which is movable.

Maxilla

The maxilla, also known as the upper jaw, assists in the formation of the roof of the mouth, nose and orbit. The maxilla has a central part and two wing-like structures that project from the sides.

Mandible

The mandible, also known as the lower jaw, is the largest and strongest bone of the face. It forms the lower jaw and holds the lower teeth in place. The mandible also provides attachment for muscles important in chewing.

Function

The primary function of the jaw is to hold the teeth in a stable position for efficient chewing and biting of food. It also plays a key role in speech and facial expressions.

Disorders

There are several disorders that can affect the jaw, including Temporomandibular joint dysfunction (TMJ), Trismus, and Bruxism. These conditions can cause pain, difficulty chewing, and other complications.

See also

• Dental anatomy
• Human skeleton
• Orthognathic Surgery

References

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