Milky teeth are the first set of teeth in humans and many other mammals .
| Baby teeth | |
|---|---|
| lat dentes decidui | |
 Children's skull, permanent teeth replace milk. | |
 The oral cavity of a seven-year-old child: on the left is a milk tooth, in the center is a hole in a fallen milk tooth, on the right is a permanent tooth. | |
| Catalogs | |
Content
- 1 Growth Process
- 2 Dental formula
- 3 Enamel organ
- 4 Change of teeth
- 4.1 Assessment of physical development by "dental age"
- 5 See also
- 6 notes
- 7 Literature
Growth Process
People’s baby teeth erupt after birth in a certain sequence. The teeth of the same name on each half of the jaw erupt at the same time. Lower teeth usually erupt earlier than upper teeth.
The milk bite is divided into two periods. In the first period (from the moment of formation to 3.5 years), the teeth are tightly located, without gaps, tooth wear is invisible, the bite is orthognathic due to the lag of the lower jaw growth. In the second period (from 3.5 years to 6 years), during the growth of the jaws, physiological gaps between the teeth ( diastema or three ) are formed, a transition from the orthognathic occlusion to the direct one occurs, and signs of significant tooth grinding appear.
Dental formula
Panoramic x-ray of teeth: bookmarks of permanent teeth are visible under erupted milk teeth, milk teeth are white on the right on the diagram, dark teeth are placed on the jaw on the right | ||
In humans, 20 milk teeth erupt: 10 on the upper and lower jaws, 5 on each half of the jaw (two incisors , canine and two molars ).
The scheme of eruption and loss of primary teeth:
Upper jaw:
| Tooth name | Teething, month | Loss years |
|---|---|---|
| Central incisors | 8-12 | 6-7 |
| Side incisors | 9–13 | 7-8 |
| Fangs | 16–22 | 10-12 |
| Molars | 25–33 | 10-12 |
Lower jaw
| Tooth name | Teething | Dropping out |
|---|---|---|
| Central incisors | 6-10 | 6-7 |
| Side incisors | 10-16 | 7-8 |
| Fangs | 17-23 | 9-12 |
| Molars | 23–31 | 10-12 |
Enamel organ
Micropreparation: Stage caps
Micropreparation: Beginning of the bell stage
Teeth Change
The period of preservation of milk teeth and teething is called the period of a removable bite - 3-4 months usually pass after a tooth decays before teething. The first molars (at the age of 5 years) usually erupt first. In the future, the sequence of teeth changes approximately corresponds to teething. At the age of 11, second molars erupt. By 12–13 years of age, a permanent bite is forming. Third molars ( wisdom teeth ) erupt at the age of 17-25 years or later, or do not erupt at all. Teething occurs in girls somewhat earlier than in boys.
Assessment of Physical Development by “Dental Age”
See also
- Human teeth
- Animal teeth
- Dental formula
- Bite
- Jaw
- Tartar
- Caries
- Teeth cleaning
- Tooth Fairy
Notes
Literature
- Dogel A.S. ,. Enamel organ // Brockhaus and Efron Encyclopedic Dictionary : in 86 volumes (82 volumes and 4 additional). - SPb. , 1890-1907.