Perio means around, and dontal refers to teeth. Periodontal diseases are infections of the structures around the teeth, which include the gums, periodontal ligament and alveolar bone. In the earliest stage of periodontal disease â gingivitis â the infection affects the gums. In more severe forms of the disease, all of the tissues are involved. For many years scientists have been trying to figure out what causes periodontal disease. It is now well accepted that various types of bacteria in dental plaque are the major villains. Researchers also are learning more about how an infection in your gums can affect your overall health.
Elephants are large mammals of the family Elephantidae and the order Proboscidea. Three species are recognised, the African bush elephant (Loxodonta africana), the African forest elephant (L. cyclotis), and the Asian elephant (Elephas maximus). Elephants are scattered throughout sub-Saharan Africa, South Asia, and Southeast Asia. Elephantidae is the only surviving family of the order Proboscidea; other, now extinct, members of the order include deinotheres, gomphotheres, mammoths, and mastodons.
Elephants are herbivores, which means they feed on plants. They eat roots, leaves, grasses, tree branches, and tree bark. They also love to eat fruit such as berries, mangoes and coconuts. By using their trunks they tear off even the strongest tree branches.here are three species of elephants the African Bush Elephant, the African forest elephant and the Asian Elephant. Elephants are classified as a Pachydermata, the scientifc name for the African Elephant is Loxodonta Africana. A baby elephant is called a calf and at birth weights about 100kg.