Odontogenesis: Definition, Average Age, Customs and Stages

It is defined as the embryonic process by which cells of the stommode are invaginated forming structures, which together with the ectomesenchyme will form the teeth.

Although a large part of dental research is focusing on the understanding of the early stages of dental development, there is a large gap in our understanding of how hard dental tissues are formed and how this process is controlled daily to produce very diverse complexes.

Emerging evidence suggests that clock genes, a family of genes that control circadian functions within our bodies, also regulate the formation of dental mineralized tissues.

Enamel formation, for example, is subject to rhythmic molecular signals that occur in short periods (24 hours) and control the secretion and maturation of the enamel matrix. Consequently, gene expression and the functions of ameloblasts are also tightly modulated at regular daily intervals.

This review summarizes current knowledge about the circadian controls of the development of dental mineralized tissues with a special emphasis on amelogenesis .

Odontogenesis or the formation of teeth, is a complex process of several steps that requires interaction between different types of cells. This begins approximately at four weeks of life in the uterus. Eventually, most babies will develop two sets of teeth.

Twenty milk teeth grow between 8 and 33 months of age, and finally give way to 32 permanent teeth. In X-rays, the bright white part of the baby and the permanent teeth correspond to the enamel, or the external hard portion of the tooth.

In some special radiographs used by dentists, the dentin or the softer inner part of the tooth is gray. During much of our childhood, both sets of teeth are visible on x-rays.

Average age

On average, children lose their front teeth by 7 years of age. Girls tend to lose their teeth a bit earlier than children. The infection can cause the loss of a tooth before its natural progression.

The loss of teeth can be temporarily painful, but eventually it should disappear with time and healing. Dental care should be sought if gum pain persists, as this may be a sign that the underlying gingiva is infected.

In many cultures, losing teeth is a rite of passage, and different cultures endorse a wide variety of stories about exactly what to do with baby teeth.


As you already know, in the United States a child will probably be asked to place the tooth under the pillow in exchange for the Fairy’s Tooth to pick it up and reward it. However, if that same child had been born in certain areas of Europe, the tooth could have been picked up by a benevolent mouse instead of a fairy.

In other countries, children throw their baby teeth at a roof (South Korea) or the sun (Iraq, Egypt and Jordan) to get good luck and new and strong teeth.

A pressing question for parents is often how much to leave under the pillow. With the inflation of teeth of some homes that leads to $ 5 and $ 20 per windfall, the average reward for teeth reimbursement in the US. UU It varies from $ 3.07 in the south to $ 3.56 in the northeast.

However, the most common amount left in 33% of households is a single dollar bill.

An important fact to remember is that it does not matter who comes to pick up your child’s tooth or what is the rate of change associated, the loss of baby teeth is a perfect time to remind our children how important it is to take care of teeth permanent

The American Pediatric Dentistry Association recommends brushing twice for two minutes each day and flossing once, under the supervision of an adult until age 8.

Also, at an early age, it is recommended that children consult a dentist regularly. Do not forget that annual check-ups, cleanings and x-rays are as important as your daily dental care.


Bud Stage:

This occurs at the beginning of the eighth week of prenatal development for the primary dentition.

This stage is mainly characterized by the appearance of a dental button without the clear disposition of the cells. The tooth is the group of cells at the end of the dental lamina.

The scenario is named after the extensive proliferation in bds. Each of these buds of the dental lamina, together with the mesenchyme will become a dental germ. The important point to keep in mind is that only the proliferation of the two tissues occurs during this stage.

Cap stage:

This occurs for the primary dentition between the ninth and tenth week of prenatal development during the fetal period. This stage is characterized by the continuation of the internal growth of the oral epithelium towards the mesenchyme. This stage marks the beginning of its differentiation.

At the end of this stage, the three embryological structures (the dental papilla, the dental follicle and the enamel organ) are considered together as the dental germ.

Bell Stage:

This occurs for the primary dentition between the eleventh and twelfth week of prenatal development. It is characterized by the continuation of the process of proliferation, differentiation and morphogenesis. Differentiation produces four cell types within the enamel / dental organ:

  • Epithelium of the internal enamel.
  • Epithelium of the external enamel.
  • Reticle of Stellate.
  • Stratum intermedium.

At the same time, the dental papilla differentiates and produces two types of cells:

  • The outer cells of the dental papilla that forms the dentin-secreting cells (odontoblasts).
  • Central cells of the dental papilla that forms the primordium of the pulp.

The dental sac (follicle) increases its collagen content and differs at a later stage than the enamel / dental organ and the dental papilla.