Instruction
1
First teeth appear in the child from about 6 months, and three years of teeth in the mouth of the baby for 20. The name of the baby teeth received from the father of medicine, Hippocrates, who saw the first teeth of the child and the breastfeeding period. Milk teeth are fully Mature by 5 years and used temporarily – for a few years until they are replaced by permanent ones.
2
In 6-8 years the child appear first permanent teeth. Generally, these are large molars. It turns out that 6-year-old child in the mouth sit the front baby teeth, and deep – growing permanent. The change of teeth, when baby teeth fall out and grow permanent, occurs after 6-8 years. However, it should be noted that the change of teeth is an individual matter, clear terms here.
3
Deciduous and permanent teeth have a lot of differences. Milk teeth are temporary teeth. They fall under the three action of buoyancy forces. First, inside the tooth grow roots for the future permanent tooth and press the tooth through dental channels. Second, the permanent tooth rises up and rests in the milk. Thirdly, the roots of the baby tooth are destroyed the special cells, osteoclasts, and milk the tooth remains without adhesion to the jaw. It turns out that the root of the milk tooth is eaten up - becomes very thin and long in relation to the crown. That's why to remove such a tooth very easily.
4
The molars are distinguished by their number. The adult usually 32. The roots of the permanent teeth diverge and bend. To distinguish deciduous teeth from permanent can be in their form. From milk tooth is moduleclassname thickening of the tooth enamel in the cervical part of the tooth. Milk teeth the long axis of the crowns tipped toward the sky and language. This palatal (language) the slope gives the milk teeth among the regular.
5
To distinguish between deciduous and permanent tooth in color. Dairy is usually a uniform white color with a slight bluish tint. Molars always yellowish or grayish in color, and the tooth neck is darker. And the last sign a baby tooth: it's not as hard as the permanent tooth. As a rule, baby teeth are easier to drill in the dental office.