Rajapattai

Children's tooth development begins while the baby is in the womb. Teething usually occurs between the ages of six and nine months. Children usually have their full set of 20 primary teeth (milk teeth, baby teeth or deciduous teeth) by the age of three years. At about the age of six years, the first permanent teeth erupt (push through the gum).

A tooth (plural teeth) is a mignonne, calcified, whitish form start in the jaws (or mouths) of various vertebrates and used to ease up down food. Some animals, surprisingly carnivores, also use teeth in behalf of hunting or owing defensive purposes. The roots of teeth are covered by means of gums. Teeth are not made of bone, but rather of multiple tissues of varying density and hardness.

The general structure of teeth is similar across the vertebrates, although there is respectable modifying in their form and position. The teeth of mammals have deep roots, and this design is also create in some fish, and in crocodilians. In most teleost fish, how, the teeth are attached to the outer surface of the bone, while in lizards they are attached to the inner surface of the jaw by the same side. In cartilaginous fish, such as sharks, the teeth are seconded by means of perplexing ligaments to the hoops of cartilage that type the jaw.