Dentin is the bony substance of the tooth

Teeth are an integral part of the human body and health. Their loss leads to significant problems with the gastrointestinal tract, and the aesthetic appearance of the person deteriorates. But often the teeth are exposed to various diseases, most tooth decay. The destruction affects not only the enamel but also of the bone substance that is causing the pain intense character.

Tooth Structure

The Tooth – human body, which is located in the alveoli of the jaws and anatomically consists of crown, root and neck, which, tapering, connects the crown with the root.

Morphologically it consists of hard and soft tissues. Take a closer look. Enamel which is the hardest element in the human body, covers the crown, that is the visible part of the tooth, and beneath it is the bone tissue of the tooth. Otherwise it is called dentin, which is structurally quite soft and porous. The root under the gum-covered cement, and the inside of the tooth is hollow, and that emptiness is filled with pulp, a soft tissue consisting of nerves and blood vessels. They penetrate into the porous structure of dentin and reach the beginning of the enamel. It causes increased sensitivity during sharp temperature shifts in the oral cavity, and also when exposed to other adverse factors.

Dentin

Bony substance of the tooth is the main part of the crown it is covered by the enamel and under the gum root has a shell made of cement. Dentin is the supporting member, which is of great importance as it performs the function of protecting the pulp from external irritants.

Bony substance of the tooth is the second fortress in the body after enamel, despite its loose structure. On the fifth of this tissue consists of collagen, two thirds – of inorganic substances, and 10% is water. If we consider the dentine under the microscope, we can see that this intercellular substance, unevenly covered with lime deposits. It permeates a huge number of dentinal tubules that are filled with nerve endings of the pulp.

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Bony substance of the tooth divided into three types:

1. Primary dentin that is formed before the first eruption of the tooth.
2. Secondary, also called physiological, is characterized by the formation after the appearance of the tooth, different chaotic arrangement of dentinal tubules and fibers, as well as a smaller number of them. Thus, over time, the cavity is replaced by bone material due to its thickening.
3. Tertiary or vicarious-are the result of irritation of tissue that is characterized by an uneven appearance with a barely perceptible mineralization. The tube in this case often do not exist.

The Formation of dentin is individual and depends on many factors, for example, from abrasion or other defects, in which the substitution of dentin occurs with varying degrees of intensity.

Enamel

This is the most solid and sturdy fabric in a human body is almost entirely composed of minerals, and the protective function of dentin and pulp. the thinnest layer is located at the neck of the tooth, and the most fat – chewing hillocks. The strength of the enamel is not constant, varying from the beginning of the growth cycle of the tooth to its end. Thus, after the eruption it is much weaker than a few years later, as the mineralization is still imperfect. But over the years the strength of the fabric still falls. It depends on many factors.

Also the strength of the enamel differs in different parts of the tooth. This setting is also individual. But one feature is common to all: the top layer of fabric always the most durable, its structure is homogeneous, and the porosity is negligible. The closer the layer of enamel to dentin, the more porous the structure, thus the strength decreases.

Disease dentin

Bony substance of the tooth susceptible to such a disease, as caries. If a lesion took out only the dentin and enamel of the tooth, the disease is classified as secondary, with the destruction of root greater. It all starts with damage to the superficial tissue, the appearance of cavities, which are filled with the remains of food, which contributes to the early processes of decay and further tooth destruction.

Downing delivers significant discomfort, echoing a sharp pain in response to different stimuli, but it is necessary to stop their contact with the sick place, as the pain disappear. This is the reason for the early visits to the dentist and correct the problem. Otherwise caries in a relatively short time reaches the tooth root, after which there is a high probability of losing him.

As long as possible to maintain healthy teeth, it is necessary to observe oral hygiene, eat nutritious food, rich in vitamins and minerals, and regularly undergo examination by a dentist to detect possible damage at an early stage, preventing their destruction.