In humans, dentition follows a certain chronology with temporary teeth that eventually fall out to make room for permanent teeth. <\/p>\n\n\n\n
However, it can happen that the permanent tooth does not grow back after the baby tooth has fallen out. This phenomenon is called dental agenesis. <\/p>\n\n\n\n
Let's discover the causes of this pathology and the treatments that exist. <\/p>\n\n\n\n
As a reminder, the temporary teeth, called milk teeth, appear in number of 20. They grow at about six to ten months for the lower jaw. The upper jaw takes seven to twelve months. <\/p>\n\n\n\n
After the primary teeth fall out, the permanent teeth usually come out between the ages of six and thirteen. In all, 28 permanent teeth appear, followed by 32 with the wisdom teeth. <\/p>\n\n\n\n
There may be a delay between the loss of the primary teeth and the eruption of the permanent teeth. However, if the parent notices that the permanent tooth does not grow back after the baby tooth has fallen out, a pedodontist should be consulted to check for dental agenesis. <\/p>\n\n\n\n
L’ag\u00e9n\u00e9sie dentaire est l\u2019absence d\u2019une ou plusieurs dents d\u00e9finitives. Il s\u2019agit d\u2019une anomalie d\u2019origine g\u00e9n\u00e9tique g\u00e9n\u00e9ralement d\u00e9pist\u00e9e entre les six et dix ans de l\u2019enfant, lorsque les dents de lait tombent. Les dents d\u00e9finitives sont alors cens\u00e9es prendre leur place. <\/p>\n\n\n\n
When a baby tooth is found not to fall out or to fall out without being replaced, it is recommended that a pedodontist be consulted to make a diagnosis. <\/p>\n\n\n\n
This form of agenesis is the most common. The absence of one or more wisdom teeth affects about 20% of the population but it does not pose any problem and does not require any treatment. <\/p>\n\n\n\n
Also called point agenesis or hypodontia, agenesis is said to be isolated when the number of missing teeth is between one and six. The lower second premolar and the upper lateral incisor are the teeth most affected by agenesis. <\/p>\n\n\n\n
Oligodontia or multiple dental agenesis is characterized by the absence of more than six permanent teeth and other dental anomalies. It is a rare condition for which the dentist refers the patient to a genetic consultation to verify that there are no other anomalies. <\/p>\n\n\n\n
The genetic factor is the most important one when it comes to dental agenesis. Nevertheless, a person can carry the defective gene without developing agenesis. <\/p>\n\n\n\n
Furthermore, according to some theories, a vitamin D deficiency in the fetus can prevent the formation of the dental germ and thus the appearance of one or more teeth. <\/p>\n\n\n\n
In cases of oligodontia, the origin of the pathology is also genetic but the consequences extend to other organs. Multiple dental agenesis is then a symptom of a rare disease such as ectodermal dysplasia (the most common). <\/p>\n\n\n\n
This disease also manifests itself through abnormalities of the hair, nails and sweat glands. <\/p>\n\n\n\n
Finally, chemotherapy in children treated at ages when the dentition is developing can also cause multiple agenesis. <\/p>\n\n\n\n
In children, implants cannot be placed because growth must be completed. <\/p>\n\n\n\n
The baby tooth should be maintained as long as possible. If the primary tooth falls out, the orthodontist will temporize it by maintaining the space left by the fallen baby tooth with a space maintainer. This is done until the jaw reaches the end of its growth: the age varies from one individual to another. <\/p>","protected":false},"excerpt":{"rendered":"
In humans, the dentition follows a certain chronology with temporary teeth that eventually fall out to make room for permanent teeth. However, it can happen that the permanent tooth does not grow back after the baby tooth has fallen out. This phenomenon is called dental agenesis. Let's discover the causes of this pathology and how it works.<\/p>","protected":false},"author":8,"featured_media":9311,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[310],"tags":[],"class_list":["post-9310","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-perte-des-dents-de-lait"],"yoast_head":"\n