Did you know that teeth are not bones, but rather skin?

It is logical to assume that teeth are such bones. They are white, hard, bone-like in appearance, isn't that enough? But no, according to science, teeth have nothing to do with bones. Dont HaveWhy are teeth not considered bones? /Live Science. What's more, they have more in common with your skin than your bones! Sound crazy? Let's try to figure it out.

Both bones and teeth are white and hard, but they are arranged differentlyWhy are teeth not considered bones? /Live Science. Teeth are made up of calcium, phosphorus and other minerals. Bones also contain these substances, but in much smaller quantities. They are mostly made up of a protein called collagen and are covered on the outside with periosteum, the living tissue that feeds bone cells.

bone material allowsWhy are teeth not considered bones? /Live Science them to grow and repair - broken bones mend again. Tooth enamel is inanimate, it is incapable of regeneration, so a cracked or broken tooth cannot grow together. But enamel is the hardest tissue of the human body, capable of withstanding loads that your ribs cannot bear.

Teeth differ in structure from bones, because they did not originate from them, but from fish scales, which our distant ancestors were equipped with.

Long ago, 410 million years ago, cartilaginous fish decidedM. Rucklin, P. C. J. Donoghue. Romundina and the evolutionary origin of teeth / Biology Lettersthat biting prey is more convenient than trying to swallow it whole. And began to grow fortified dentineFirst‑known teeth belonged to fierce fish / ABC Science scales on their snouts, which helped them better grasp and tear apart food. Significantly changed over millions of years, dentin scales now stick out in your mouth and in you.

Similarly, a common origin with scales It hasP. T. sharpe. Fish scale development: Hair today, teeth and scales yesterday? / Current Biology your skin and hair. It has been proven that the development of teeth, skin and hair in humans is still regulated by the same set of genes as the growth of scales in fish. So get your teeth in terms evolution These are not bones, but heavily modified skin.