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Bottom teeth of a seven-year-old, showing primary teeth (left), a lost primary tooth (middle), and a permanent tooth (right) Tooth eruption in humans is a process in tooth development in which the teeth enter the mouth and become visible. Current research indicates that the periodontal ligaments play an important role in tooth eruption.
A sign at a park featuring Irasutoya illustrations. In addition to typical clip art topics, unusual occupations such as nosmiologists, airport bird patrollers, and foresters are depicted, as are special machines like miso soup dispensers, centrifuges, transmission electron microscopes, obscure musical instruments (didgeridoo, zampoña, cor anglais), dinosaurs and other ancient creatures such ...
Examples of computer clip art, from Openclipart. Clip art (also clipart, clip-art) is a type of graphic art. Pieces are pre-made images used to illustrate any medium. Today, clip art is used extensively and comes in many forms, both electronic and printed. However, most clip art today is created, distributed, and used in a digital form.
The toothbrush originally became popular in the late 19th century, in the United States. [1] It was a neat, uniform, low-maintenance moustache that echoed the standardization and uniformity brought on by industrialization, in contrast to the more flamboyant styles typical of the 19th century such as the imperial, walrus, handlebar, horseshoe, and pencil moustaches.
Hydroxyapatite, also known as hydroxylapatite, is the major component of tooth enamel and bone mineral. A relatively rare form of apatite in which most of the OH groups are absent and containing many carbonate and acid phosphate substitutions is a large component of bone material. [13]
Diagram of tooth anatomy. Dental anatomy is a field of anatomy dedicated to the study of human tooth structures. The development, appearance, and classification of teeth fall within its purview. (The function of teeth as they contact one another falls elsewhere, under dental occlusion.)
Dinosaur teeth have been studied since 1822 when Mary Ann Mantell (1795-1869) and her husband Dr Gideon Algernon Mantell (1790-1852) ...
Atraumatic restorative treatment (ART) [1] is a method for cleaning out tooth decay (dental caries) from teeth using only hand instruments (dental hatchet and spoon-excavator) and placing a filling. It does not use rotary dental instruments (dental drills) to prepare