the teeth
Teeth is a collection of the word tooth, meaning the structure of the semi-skeletal steel which has roots immersed in the pockets of the inside of the jaws of the vertebrates. The teeth are made up of several forms: the cutters called the quadrilateral or the tuck, the phoenix called the spiders, and the molars also called the windmills,
Dental components
The teeth consist of:
- The crown is the prominent part of the tooth.
- The root is the submerged part inside the jaw bone.
- The port is the outer layer of the crown of age. It is considered the most rigid substance in the human body. The port consists of the mineral compounds by fifty-six percent, organic matter, water and hydroxyapatite.
- Sunni slurry, the outer layer of the root of the tooth, ie the casing that connects the tooth and the alveolar bone that surrounds it.
- Ivory is the middle layer of the tooth, and is the basic mass of age and is yellowish brown color, and is sensitive if exposed to the oral medium will cause pain.
- The Sunni pulp is called the vascular system, the inner layer of the tooth. The pulp is present in the ciliary chamber, and the nerve fibers and blood vessels enter it from the opening of the root of the tooth through the root canal.
- The metamorphic convergence line, a junction between the port and the dental mortar, is located on the ends of the core chamber.
- The dendritic cells are located near the line of the ionic septae, which are cells that possess cellular epitopes called channels. Their function is to convey the sensation of cold, heat, and other sensory stimuli to the nerve end.
Number of human teeth
The number of human teeth is thirty-two years old, while the human is not very old, and are called teeth with milk teeth, so that every decoder ten teeth.
Dental functions
The teeth have several functions, namely:
- Helps the human to pronounce especially the front teeth.
- They crush food and cut it.
- Give man a beautiful appearance.
Diseases affecting teeth
Dental diseases are:
- tooth decay: It results from the decomposition of sugar in processed foods, which is based on the production of acid that corrodes the outer enamel layer of teeth, and the method of prevention of tooth decay is as follows:
- Do not drink soft drinks.
- Regulate tooth brushing and putty after eating.
- Do not eat too much.
- Broken teeth
- Yellowing teeth: Yellow teeth are yellow due to some of the causes of tooth discoloration, for example:
- Eat foods and drinks, such as coffee, tea, and soft drinks.
- Smoking.
- Do not clean the teeth continuously and not take care of them.
- Some types of treatments contribute to the yellowing of teeth, such as chemotherapy.