Question

teeth grow rapidly in some humans why some humans have 3 stages of growing teeth while other have only 2 stages ​

Answer 1

Answer: t is possible to have extra, or "supernumerary," teeth. This phenomenon is called hyperdontia and is often erroneously referred to as "a third set of teeth." These teeth may erupt into the mouth or remain impacted in the bone.

The reason there are two sets of teeth is because kids have smaller faces and jaws than adults do, so teeth the size of adult teeth would not fit in a baby or toddler's mouth. By 10, the size of your face is closer to adult size, and so the bigger adult teeth start to be able to fit.

You get two full sets of teeth over your lifetime. As a baby, you have 20 teeth, and as an adult you should have 32 teeth. Among the 32 teeth, each has its own function in the chewing and eating process.