One year and four months old baby boy is learning to brush his teeth with electric toothbrush. TEETH (singular, Tooth) are small white structures found in the jaws (or mouths) of many vertebrates that are used to tear, scrape, milk and chew food. Some animals, particularly carnivores, also use teeth for hunting or defense. The roots of Teeth are covered by gums. Teeth are among the most distinctive (and long-lasting) features of mammal species. Paleontologists use Teeth to identify fossil species and determine their relationships. The shape of the animal’s teeth are related to its diet. ELECTRIC TOOTHBRUSH The first electric toothbrush was developed in 1939 in Scotland, but did not appear on the open market until the 1960s, when it was marketed as the Broxodent in the United States by Squibb Company. In 1961, General Electric introduced a rechargeable cordless toothbrush that moved up and down when activated. In 1987, the first rotary action toothbrush for home use, the Interplak, appeared in shops for the general public. There are currently many different varieties of model that use this mechanism. TOOTHBRUSH is an instrument consisting of a small brush on a handle used to clean teeth through tooth brushing. Toothpaste, often containing fluoride, is commonly added to a toothbrush to aid in cleaning. Toothbrushes are offered with varying textures of bristles, and come in many different sizes and forms. Most dentists recommend using a toothbrush labelled “Soft”, since …