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How old is dentistry? Detailed answer

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How old is dentistry?

According to a find in the Negev desert (today - the territory of Israel), 2300 years ago, a tooth on a pin was installed in the patient's jaw. A previously removed tooth was fixed on a bronze nail, which began to perform its functions again.

Author: Mendeleev V.A.

 Random interesting fact from the Great Encyclopedia:

What is the origin of Mr. Spock's greeting from the TV series Star Trek?

In the television series Star Trek, Leonard Nimoy's characteristic greeting of Mister Spock was the gesture of the inhabitants of the planet Vulcan - the index and middle fingers closed together, as well as the ring and little fingers with a gap between the middle and ring fingers. This greeting is nothing more than an ancient Jewish blessing, with which the priests of the Kohanim bless the people of Israel in the synagogues. Nimoy attended such a service as a child and was so impressed by the gesture that he decided to use it many years later on the show.

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Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

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Platelets in an oil pipeline 14.04.2007

In case of any injury, the blood brings to the place of rupture of the blood vessel special blood cells - platelets, which form a blood clot and plug the hole with their bodies.

The Scottish firm Brinker Technology proposes to launch artificial platelets into pipelines, which will be carried by the current to the leak site and block the hole that has appeared. The first experiments carried out on oil pipelines were successful: "platelets" of a cubic shape made of soft plastic plugged the hole.

According to the developers, the method can also be used to protect against leaks of other liquids, it is only necessary to choose a material that does not dissolve in this liquid, does not sink and does not float. Soon, Brinker Technology hopes to get the approval of the authorities to conduct a similar experiment on the city's water supply.

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