Bone tissue of the tooth. Bone tissue of the tooth: structure and properties Bone part of the tooth 6 letters

What is the name of the dense substance - the base of the tooth? and got the best answer

Answer from Lara[guru]
The tooth is located in the alveolar process of the jaw and consists of a number of hard tissues (such as tooth enamel, dentin, dental cement) and soft tissues (dental pulp).
Tooth enamel is the outer protective covering on the top of human teeth.
Enamel is the hardest tissue in the human body, which is explained by the high content of inorganic substances - up to 97%. There is less water in tooth enamel than in other organs, 2-3%. Hardness reaches 397.6 kg/mm²
Dentin is mineralized tooth tissue. It consists mainly of hydroxyapatite (70 - 72%), penetrated by dentinal tubules and collagen fibers.
Serves as the basis of the tooth and supports tooth enamel. The thickness of the dentin layer ranges from 2 to 6 mm. Dentin hardness reaches 58.9 kg/mm².
Cement is a specific bone tissue that covers the root and neck of a tooth. Serves to firmly secure the tooth in the bone alveolus. Cement consists of 68 - 70% inorganic components and 30 - 32% organic substances.

Reply from 2 answers[guru]

Hello! Here is a selection of topics with answers to your question: What is the name of the dense substance - the base of the tooth?

Reply from Anton Nazaruk[guru]
cement


Reply from Yergey[guru]
Dentine


Reply from Yuri Bazhin[guru]
the cornea, which also forms the basis of the hair of the nails and the cornea of ​​the eye

Bone tissue of the tooth

First letter "d"

Second letter "e"

Third letter "n"

The last letter of the letter is "n"

Answer for the question "Dental bone tissue", 6 letters:
dentine

Alternative crossword questions for the word dentin

Type of bone tissue

Bone tissue of teeth

Main tooth mass

Hard tissue that makes up the bulk of the tooth

Definition of the word dentin in dictionaries

Explanatory dictionary of the Russian language. D.N. Ushakov The meaning of the word in the dictionary Explanatory Dictionary of the Russian Language. D.N. Ushakov
(de), dentin, pl. no, m. (from Lat. dentes - teeth) (med.). Bone substance of the tooth.

Great Soviet Encyclopedia The meaning of the word in the dictionary Great Soviet Encyclopedia
(from Latin dens, genitive dentis ≈ tooth), a type of bone tissue that makes up the main mass of the tooth and is also found in the placoid scales. Unlike other types of bone, the ground substance of D. does not contain cavities with cells, but is penetrated by tubules,...

New explanatory and word-formative dictionary of the Russian language, T. F. Efremova. The meaning of the word in the dictionary New explanatory dictionary of the Russian language, T. F. Efremova.
m. Hard tissue that makes up the bulk of the tooth of vertebrates and humans.

Wikipedia Meaning of the word in the Wikipedia dictionary
Dentin (dentinum, LNH; - tooth) is the hard tissue of the tooth, constituting its main part. The coronal part is covered with enamel, the root part of the dentin is covered with cement. Consists of 72% inorganic substances and 28% organic substances. Consists mainly of hydroxyapatite...

Explanatory dictionary of the Russian language. S.I.Ozhegov, N.Yu.Shvedova. The meaning of the word in the dictionary Explanatory Dictionary of the Russian Language. S.I.Ozhegov, N.Yu.Shvedova.
[de], -a, m. (special). Bone tissue of the tooth.

Encyclopedic Dictionary, 1998 The meaning of the word in the dictionary Encyclopedic Dictionary, 1998
DENTIN (from Latin dens, genitive dentis - tooth) is a type of bone tissue that makes up the main mass of teeth; In the crown area, dentin is covered with enamel, in the root area - with cement. Also found in the scales of cartilaginous fish.

Examples of the use of the word dentin in the literature.

Do you know, Your Highness, that Oscar Dentine- an inveterate scoundrel that you can’t trust him even a penny?

And after Dentine he will drink for a whole year with the money you pay him for this voyage!

They have all their necessary details: a pulp penetrated by branches of nerves and blood vessels, connective tissue, a bone base - dentine, covered on top with durable yellowish enamel.

Its functional effectiveness will be restored: the destroyed enamel tissue will be economically removed and dentin and restore the integrity of the crown using filling material.

The resulting cavity is first in the enamel, and then in dentin progresses in depth and width.

While eating, the bone tissue of the tooth experiences some stress. If teeth fall out, the load is reduced and the bone decreases in size. When one tooth is lost, the others have to work harder. This can lead to their rapid destruction.

Structure of the bone tissue of the tooth

The structure of bone tissue is different from the structure of other human cells. Osteoblasts and osteoclasts are special cells found in hard tissues. Osteoblasts produce collagen, which allows bone to continue to grow, while osteoclasts cause bone atrophy. Some cells continue to grow, others reduce the solid part. Working together provokes constant renewal of the bone tissue of the tooth.

Bone tissue consists of two parts:

  • cortical contains a large percentage of minerals;
  • spongy is more similar to bone marrow and consists of soft parts.

The lower and upper jaws differ from each other in structure. The lower one consists of a cortical layer that surrounds a small spongy layer. This structure is required so that the lower jaw can withstand the load that falls on it. The upper jaw mostly consists of a spongy layer and a small amount of hard dental tissue.

Cause of atrophy

Reduction of bone tissue appears after tooth extraction. The more gaps in the dentition, the more severe the symptoms of atrophy:

  • the size of the gum decreases in volume and height;
  • wrinkles may appear around the mouth;
  • sunken cheeks and lips;
  • drooping corners of the mouth;
  • facial asymmetry;
  • the appearance of gaps between the remaining teeth.

Atrophy occurs due to several reasons:


The most common cause of bone loss is tooth extraction. The patient himself does not immediately understand that changes are happening to the jaw. 3 months after the loss of a tooth, part of the gum begins to collapse, and a year later it is no longer possible to insert an implant in the place of the gap without additional measures to restore the bone tissue of the tooth.

What does bone destruction lead to?

Atrophy is not only an aesthetic problem; with this pathology, changes occur in the body and difficulties arise in other organs. Restoring the dentition becomes a complex task and requires bone tissue augmentation during dental implantation.

In the absence of teeth, food is crushed poorly, which over time leads to a malfunction of the gastrointestinal tract.

The loss of a large number of teeth leads to impaired diction and causes the appearance of deep wrinkles on the cheeks.

Non-carious lesion of tooth tissue

One of the reasons for the appearance of bone tissue atrophy is damage for various reasons. This disease takes second place in visits to the dentist after caries. It can affect one tooth or several and manifest with various symptoms.

Non-carious lesions of tooth tissue can be congenital or acquired. One of the phenomena of damage may be erosion. The enamel is damaged, which leads to darkening, increased sensitivity and aesthetic problems. The disease can last a long time and lead to tooth loss. Sometimes the cause of the development of pathology is a diet with a high content of acids and salts. Marinades and orange juice provoke the development of the disease. At the initial stage, the disease is not diagnosed, because the loss of enamel shine is not very noticeable. But over time, the patient begins to complain of pain. Prevention of erosion is an important component to prevent the development of damage to dental hard tissues and atrophy.

Another common cause of dental damage is increased tooth sensitivity. Under the influence of temperature, severe pain occurs, which quickly subsides. The disease can bother one tooth or affect several. If left untreated, there is a risk of surgery or removal. To replenish missing minerals in tooth tissues, vitamin and mineral complexes are taken.

Bone tissue restoration

Restoration of bone tissue has become possible thanks to the development of medicine. The doctor determines whether restoration is required before dental implantation. As a rule, this is necessary. Building up the bone tissue of a tooth takes from 6 to 8 months.

Bone tissue restoration is necessary in the following cases:

  • missing tooth;
  • periodontal disease;
  • removal of the old implant;
  • jaw injury;
  • removal of a cyst in the cavity.

When a tooth is removed, especially during a complex procedure, inflammation may develop, which leads to rapid erosion of the bone tissue. The longer a tooth is not replaced, the more atrophy will appear and the more difficult it will be to place a new implant.

With periodontal disease, the bone tissue at the base of the tooth is destroyed. If the disease is not stopped in time, it leads to molar loss, and restoration will require jaw bone augmentation.

Removal of an artificial tooth is possible if low-quality material is used or poor workmanship is performed. In such cases, the implant may break and damage the jaw. Therefore, restoration of soft and hard tissues will be required.

If a cyst or tumor was removed, bone tissue could be affected. Surgery will then be required to restore the hard parts.

In case of jaw injury, in particular a fracture, restoration of some parts is required for further prosthetics.

Recovery methods

To build up the bone part of a tooth, several methods are used, the use of which depends on the degree of atrophy.

Medication is used at the initial stage of atrophy to slow down the process.

The most common method is surgical. Recovery occurs in full with minimal risk of side effects. The doctor decides how to deal with atrophy, but the method will differ depending on which jaw the operation is performed on.

Restoration work is carried out under local anesthesia. Ultrasound is used to minimize damage and reduce recovery time. A drug is injected into the bone to stimulate cells to regenerate, and within 8 months the bone tissue is completely restored.

Sinus lift for recovery

The sinus lift procedure is designed to increase bone tissue by elevating the maxillary sinuses. It is used provided that the patient has no pathologies or allergic reactions.

If the patient has a history of chronic runny nose, sinusitis, or multiple septations, the operation will not be performed.

The procedure allows you to increase the missing volume of bone tissue, but there remains a risk of developing a chronic runny nose or inflammatory process in the future.

Protecting the jaw from atrophy

Atrophy of the dental bone tissue is treated surgically, but this can be avoided if the destruction of hard tissue is prevented.

To do this, it is necessary to restore lost teeth in a timely manner and prevent the loss of existing ones. Implants are much better than other methods, because they have a root and create a load on hard tissues. Removable dentures do not provide full load on the lower jaw, and over time, atrophy of the hard tissues of the teeth will occur. Treatment is similar for significant loss of jaw bone. If hard tissues subside gradually, then correction of the prostheses will be required without treating atrophy.

When treating atrophy, the choice of treatment method depends on the wishes of the patient. What does he want to achieve? Complete restoration of bone tissue and its function or create external beauty?

To prevent atrophy and other oral diseases, you should visit the dentist twice a year.