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 cheap, calcified, whitish order start in the jaws (or mouths) of innumerable vertebrates and occupied to ease up down food. Some animals, explicitly carnivores, also use teeth for the purpose hunting or in place of defensive purposes. The roots of teeth are covered by means of gums. Teeth are not made of bone, but to a certain extent of multiple tissues of varying density and hardness.
The community make-up of teeth is nearly the same across the vertebrates, although there is sizeable converting in their show up and position. The teeth of mammals get serious roots, and this design is also initiate in some fish, and in crocodilians. In most teleost fish, regardless how, the teeth are fastened to the outer rise of the bone, while in lizards they are fixed dev