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Sometimes we wonder why they are called 'baby teeth', and one explanation is that they are much whiter than the final teeth. That sometimes worries parents, the first thing they see when they start to appear is that they are much larger and more yellow than the permanent ones.
Indeed, permanent teeth differ in several characteristics from milk teeth:
- Size: the definitive ones are bigger. The body grows, but the teeth do not 'stretch' like bones and muscles, so they are born 'big' compared to their peers. As the child grows, this difference becomes less evident.
- Color: they are more yellow; In reality, what happens is that the thickness of the dentin (the tooth structure that is below the enamel) occupies much more thickness inside the tooth. The enamel is translucent, so that the dentin color, which is an intense yellow hue, is transparent. But that is the normal color of the teeth. There is no need to consider whitening or other 'solutions' for a problem that is not such.
- Form: in general, permanent teeth and molars have the most pronounced pits and fissures. Milk pieces, having a finer enamel, wear faster, and in fact a milk tooth when it is time to fall is much flatter and smoother than a permanent tooth that has been working for 30 years.
- Internal structure: the anatomy of the tooth inside is also different. The cavity in which the nerve and blood vessels are (the pulp) is narrower in permanent teeth. The dentin is more compact. That is why when a cavity appears in milk teeth we have to hurry to make decisions about its treatment, because caries can quickly reach the pulp, which is more superficial. Throughout life, the living cells inside the tooth secrete dentin that defends the tooth from attacks. The pulp is becoming more and more distant from the outside the older the person is.
The roots of milk molars are more open (the permanent tooth is housed between them), they are flatter and more curved, and have the special characteristic that they are reabsorbed as the final tooth pushes. The roots of the definitive no, its form must remain unchanged throughout life. This explains the differences in terms of pulp treatments: in adults a root canal is to completely eliminate the tissues inside the roots, and in children there are variations depending on how much root remains to be reabsorbed or the degree of involvement of the pulp , being the usual treatments pulpotomy and pulpectomy.
In children the teeth are arranged in an almost perfect semicircle, while in the definitive dentition the shape adopted is a parabola, more in the shape of a U.
Each of these differences has a reason and an impact on the functioning of the mouth. The dentist, in his treatments, will try to adapt to what nature has arranged, both in his techniques and in the chosen materials.
You can read more articles similar to Children's definitive teeth, in the On-Site Dental Care category.