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The Amazing Functions of the Mandible: Why Is It the Only Moveable Bone in Our Face?
In the world of biology, the mandible is known for its unique mobility and diverse functions. As part of the human facial skeleton, the mandible not only supports the tongue, but also affects our diet, communication and facial expressions. The functionality of this structure makes it an indispensable element in our daily lives.
Structure of the mandible
The mandible, or mandible, is located at the bottom of the human face and is the only movable bone in the face. Its main structure includes the following parts:
Mandibular body
Two stems
"The mandible is the strongest bone on the face and bears its weight and function."
Mandibular body
The body of the mandible is shaped like a horseshoe, with the front part forming the chin and the back part extending upward and connecting to the stem. This part contains the alveolar rim, which fits the lower row of teeth.
Stem
The stem part is the coronoid process in the front and upper part and the condyle in the back and lower part. These two protrusions form separate articulations with the temporal bone, allowing the mandible to move in multiple directions.
Function of the mandible
The function of the mandible is not limited to providing the shape and structure of the face. It plays an important role in:
Chewing and Swallowing
One of the main functions of the mandible is to chew food. During chewing, the movement of this bone helps the teeth effectively grind and cut food, making it easier to swallow.
Voice and Breathing
While chewing, the mandible is also closely related to our speech function. Its movement allows the tongue and lips to move freely for a variety of articulations. In addition to this, the mandible also plays an important role in the breathing process by helping air flow through the mouth.
Facial expression
The mandible is also closely related to our facial expressions. Its flexibility allows us to display a range of emotions, which is crucial for social interaction.
The evolution and development of the mandible
During the course of evolution, the human mandible has undergone significant changes. According to research by archaeologists, the size of human mandibles has decreased with the rise of agriculture since the Neolithic Age. Although this change reflects changes in lifestyle, it has also led to the problem of uneven tooth arrangement among modern people.
Development process
The mandible develops from Meckel's cartilage, which provides structural support to the jaw during early embryonic stages. After birth, the mandible bones on both sides gradually fuse to form a complete jaw structure.
“As we age, the loss of teeth can cause the jawbone to resorb, causing its weight and shape to change.”
Clinical significance
The health of your jawbone is vital to overall health. It can suffer from various problems, such as fractures, dislocations, or other injuries. According to reports, one in five facial injuries involves the jawbone. Treatment involves the installation of metal plates to promote healing, and the technique and approach to surgery still need to be tailored to the individual situation.
Teeth and Oral Health
As teeth are lost or missing, resorption of the jawbone can lead to changes in facial structure. This leaves people relying on dental surgery to rebuild the function of their mouths.
Mandibulectomy
If the mandible needs to be removed due to disease or other reasons, retraining of the oral muscles must be considered to ensure that the patient can eat and speak smoothly again.
The mandible is not only an important part of the facial structure, but also an important key to maintaining the diversity of human life. Have you ever thought about, besides the mandible, what other physiological functions play such an important role in our daily lives?
