How many baby teeth should be in children, depending on the age

baby teeth The development of young children occurs in a similar scenario. Approximately at the same time they begin to sit, walk, utter their first word. It is generally accepted that the first teeth of infants should also appear at a certain age.

In practice, things are somewhat different. At one kid in 6 - 7 months already it is visible a pair of teeth, and even it is more. And at another in 10 months only the first tooth is just erupted.

Why does this happen? How many baby teeth should a child have, what is considered the norm at this or that age?

Erection of milk teeth and their number

Normal appearance of the first tooth at six months of age is considered normal. The harbinger of this is the formation of a small bulge, a tubercle, on the surface of the gums. After a while in this place the gum will become thinner, and through it the growing tooth will shine through. Complete eruption occurs when the gum tears, and the crown of the milk tooth appears on the surface.

Teething upper teeth

In accordance with the

generally accepted standard, teeth in a baby should appear in a specific time and in a certain sequence. But these figures are very conditional, and small deviations in any direction are not critical.

It used to be that later teething is a signal of delay in development. But by now it has been established that babies whose baby teeth began to appear belatedly do not lag behind their "toothy" peers.

Later, the eruption of the first teeth can be laid down at the genetic level, be a consequence of an infectious disease or a lack of vitamins. Earlier, the lower incisors appear most often. There are cases when a child was born with them.

Erection of infant teeth

Diary of infant teeth in children

In any case, up to 2.5 - 3 years, a person has 20 milk teeth:

  • 4 lower incisors;
  • 4 upper cutters;
  • 4 canines;
  • 8 molars.

This is their normal number. During the shift to permanent teeth, the same amount falls out and is replaced by new stronger teeth, plus another 8-12 teeth( including wisdom teeth).Thus, 20 teeth change in children.

Dental formula

There is a "mathematical" way of determining the normal number of teeth in a child of the first years of life. To do this, you need to subtract 4( n - 4) from its exact age in months. The resulting difference and shows how many teeth the child should have at the moment.

For example, if the baby is 8 months old, then we take 4 and get 4 teeth. And if the child is 1 year old and 5 months, then from 17, we subtract 4 and get that at this age he should already have 13 milk teeth.

For the order of teething, see this video:

Dependence of the number of teeth on the age of the baby

The difference in the duration of eruption of each pair of teeth in different children can reach 4-6 months. Therefore, the conditional schedule for their appearance does not contain the specific age of the child, but certain intervals.

So, how many teeth will the child have, depending on age:

  1. At ten months of the , the child has at least 2 teeth. Usually these are the lower central incisors, but rare exceptions. If the first how many teeth should be in a year milk teeth appear late, they do not always erupt in the correct order. So, for example, first one lower and one upper chisel or two central upper chisels may appear. Most of the children already have 10 teeth at the top and 2 from the bottom by 10 months, and some have already cut 4 upper and 4 lower incisors by this time.
  2. By the time when the child is performing the year , he already has 6 to 8 teeth. At some, by this time, the upper milk molars begin to erupt. But more often in the one-year-old child, the upper 4 incisors and 2 lower incisors were completely cut.
  3. It is believed that, by the time the child is 2 years old , it is assumed that all 20 baby teeth should already be cut through. But as stated earlier, each child's development is individual. And if the first teeth of the baby appeared not in 6 months, but later, it is likely that he will have only 16 instead of 20 teeth.
  4. By the age of three the for the child has surely erupted all the milk teeth. If previously there was a sufficiently large distance between them or they grew at an angle, now the teeth are aligned, occupy the right position, and densely adjoin each other.
  5. In 4 years of , children already usually have a full set of baby teeth. After cutting 20 teeth, their number does not change until the replacement for the root will begin.
  6. In the five years of , in some children, the baby teeth are beginning to give way to radical teeth. This happens in the same order in which they erupted. That is, first the milk incisors fall out and in their place permanent teeth grow. In addition, at the age of 5, 21 and 22 teeth can begin to appear - molars. So, the number of teeth at this age in different children can be different: from 19( if the beginning of loss of milk teeth) to 22 or 24.
It is worth noting that the generally accepted norms are very conditional. If the number of teeth in a child at a certain age is slightly different from the standards - this is not a cause for concern.

Missing teeth are sure to break through. In extreme cases, you can visit the dentist and make sure that the baby and his teeth are all right.