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Milk tooth Milk Teeth how many

There are three teeth in the human being: the teeth of the teeth, the mixed teeth and the final teeth. The tooth set, which includes the teeth or temporary teeth, consists of 20 teeth divided into 4 quadrants of 5 teeth each: 2 incisors, 1 canine and 2 molar.

Temporary dentition

It begins around the 15 week of intrauterine life; period begins calcification of the central incisors, until the establishment of primary molars at the age of 30 months.

Here is the calendar of physiological rash of the baby teeth:

  • Lower central incisors: 6 to 8 months.
  • Lower lateral incisors: 7 to 9 months.
  • Upper central incisors: 7 to 9 months.

Upper lateral incisors: 9 to 11 months.

  • First molars: from 12 to 16 months
  • Canines: from 16 to 20 months.
  • Second molars: 20 to 30 months.

In general, the lower (or mandibular) teeth erupt earlier than the upper (or maxillary) teeth. With each dental flare, the child is likely to be grumpy and salivate more than usual.

The dental eruption is divided into 3 phases:

–          The preclinical phase. It represents all the movements of the dental germ to reach the contact of the oral mucosa.

–          The phase of clinical eruption. It represents all the movements of the tooth since its emergence until the establishment of a contact with its antagonistic tooth.

–          The phase of adaptation to occlusion. It represents all the movements of the tooth throughout its presence in the dental arch (egression, version, rotation …).

Definitive dentition and loss of baby teeth

At 3 years, all temporary teeth have normally erupted. This condition will last until the age of 6, the date of the appearance of the first permanent molar. We then move to the mixed dentition that will spread until the loss of the last tooth of milk, usually around the age of 12 years.

It is during this period that the child will lose his baby teeth, replaced as and by the final teeth. The root of the deciduous teeth resorbs under the effect of the eruption of the final teeth underlying (we speak of rhizalysis); sometimes leading to an exposure of the dental pulp because of the dental wear that accompanies the phenomenon.

This transition phase often hosts various dental disorders.

Here is the calendar of physiological eruption of permanent teeth:

Lower teeth

– First molars: 6 to 7 years

– Central incisors: 6 to 7 years

– Lateral incisors: 7 to 8 years

– Canines: 9 to 10 years old.

– First premolars: 10 to 12 years old.

– Premolar seconds: 11 to 12 years.

– Second molars: 11 to 13 years.

– Third molars (wisdom teeth): 17 to 23 years old.

Upper teeth

– First molars: 6 to 7 years

– Central incisors: 7 to 8 years

– Lateral incisors: 8 to 9 years

– First premolars: 10 to 12 years old.

– Premolar seconds: 10 to 12 years.

– Canines: 11 to 12 years old.

– Second molars: 12 to 13 years old.

– Third molars (wisdom teeth): 17 to 23 years old.

This calendar is primarily indicative: there is indeed a great variability of eruption ages. In general, girls are ahead of boys.

Structure of the milk tooth

The general structure of the milk tooth does not differ much from that of the permanent teeth. Nevertheless, there are some differences

– The color of the baby teeth is slightly whiter.

– The email is thinner, which exposes them more to cavities.

– The dimensions are obviously smaller than their final counterparts.

– The coronal height is smaller.

Temporary dentition promotes the evolution of swallowing from a primary to a mature state. It also ensures chewing, phonation, plays a role in the development of the facial and growth in general.

The brushing of the baby teeth must begin as soon as the teeth appear, essentially to familiarize the child with the gesture because it is not very effective at first. On the other hand, regular checks must begin from 2 or 3 years to accustom the child.

Trauma of the milk teeth

Children are at high risk of shocks, which can lead to dental complications years later. When the child starts walking, he usually has all his “front teeth” and the slightest shock can have consequences. Such incidents should not be minimized on the grounds that they are milk teeth. Under the effect of shock, the tooth can sink into the bone or mortify causing eventually a tooth abscess. The germ of the corresponding definitive tooth can sometimes even be damaged.

According to several studies, 60% of the population suffers at least one dental trauma during its growth. 3 out of 10 children suffer from it on the milk teeth, and particularly on the upper central incisors, which account for 68% of traumatized teeth.

Boys are twice as likely to be traumatized as girls, and there is a peak of trauma at age 8. Dental traumas, subluxations and dislocations are the most common traumas.

Can a decayed milk tooth affect future teeth?

An infected milk tooth can damage the germ of the corresponding definitive tooth in the event that the pericoronary sac is contaminated. A decayed tooth should be visited by the dentist or pediatric dentist.

Why do you sometimes need to pull off baby teeth before they fall off?

Several reasons can push:

– The milk tooth is too decayed.

– The milk tooth is fractured following a shock.

– The tooth is infected and the risk is too great that it infects the definitive tooth.

– There is a lack of space due to stunting: it is better to clear the way.

– The germ of the definitive tooth is late or misplaced.

Legends around the milk tooth

The loss of the first milk tooth is a new confrontation to the idea that the body can be amputated from one of its elements and can therefore be a scary episode. This is the reason why there are so many legends and tales that transcribe the emotions experienced by the child: the fear of pain, surprise, pride….

The little mouse is a very popular myth of Western origin that aims to reassure the child who loses a tooth of milk. According to legend, the little mouse replaces the baby’s tooth, which the child places under the pillow before falling asleep, through a small room. The origin of this legend is not very clear. It may have been inspired by a 17th century Madame d’Aulnoy tale, The Good Little Mouse, but some people believe that it derives from a very ancient belief that the definitive tooth takes on the characteristics of the animal that swallows the corresponding milk tooth. It was hoped that this is a rodent, known for the strength of his teeth. To do this, the milk tooth was thrown under the bed in the hope that a mouse would come to eat it.

Other legends exist around the world! The legend of the more recent Tooth Fairy is an Anglo-Saxon alternative to the little mouse, but is modeled on the same model.

The American Indians used to hide the tooth in a tree in the hope that the definitive tooth will grow straight like a tree. In Chile, the tooth is transformed by the mother in jeweland must not be exchanged. In the countries of southern Africa, one’s tooth is thrown towards the moon or the sun, and a ritual dance is performed to celebrate the arrival of one’s definitive tooth. In Turkey, the tooth is buried near a place that we hope will play a big role in the future (the garden of a university for brilliant studies for example). In the Philippines, the child hides his tooth in a special place and has to make a wish. If he manages to find her a year later, the wish will be granted. Many other legends exist in different countries of the world.

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