A few facts about our teeth on their properties, number and development.
* Take care of your teeth - enamel that covers them, harder than a bullet, but a little softer than steel, which made dining fork
* Enamel of our teeth has many remarkable properties, one of which is refreshing. One study (link) showed that our teeth, "can" without the help of a dentist to heal tiny cracks, which otherwise would lead to ongoing campaigns to the doctor
* In the presence of remarkable properties (see paragraph above), one of the dangers faced by our teeth - bacteria that live in the mouth. These bacteria produce acid, washed out of the enamel of calcium and phosphorus, weakening it and causing the appearance of cavities
* Acids, which attack tooth enamel, are merely a byproduct of bacterial life on the processing of sugar. Before the invention of refined sugar cavities in humans appeared much less
* Fluorides contained in toothpaste, slow down leaching of minerals from tooth enamel, causing the reverse process - the absorption of calcium and phosphorus from the saliva back into the thick enamel
* In 1945, in Grand-Rapids, Mich., for the first time to clean drinking water were used fluoride (link). Now more than two-thirds of all drinking water in the U.S. is cleared in this way
* The next step in the fight against the deterioration of the teeth may be the development of genetically modified bacteria, streptococcus, which absorbs sugar without isolating dangerous to enamel acids. (Link). In addition, the bacteria secrete a specific antibiotic that kills other "original" strains of streptococcus in the mouth
* A study in universities Yale and New York, confirmed one of the folk beliefs - that not every child a woman loses an average of one tooth (reference). In this case, one of the mechanisms of "loss" Teeth are the hormonal changes in women, leading to gingivitis (gum disease) and to accelerate the leaching of calcium from the enamel, which leads eventually to the loss of a tooth
* In the 18 century in England among wealthy women was fashionable to have false teeth instead of their often damaged due to excesses in the diet and lifestyle. (Link to video). By the way, I should add that very often these transplants teeth ended in failure, and the patient instead received a bunch of beautiful teeth infections. until the syphilis
* Development of teeth in the human fetus begins at the sixth week. For a long time after birth in the thickness of the enamel can select specific "annual rings", the mineral content which shows the conditions in which the developing fetus, and the fed, and felt like a pregnant mother.
* In Norway, there is a bank of teeth (reference), which houses more than 100.000 children's milk teeth. This material is used to study the effect of environmental conditions on the state of our teeth
* Cells that are responsible for the formation and growth of teeth, and sometimes begin to "work" in the most unexpected places, leading to the emergence of the so-called teratomas.
* For the first time got his teeth, apparently, some fish more than 500 million years ago. They used them just as we - for food razgryzaniya
* Dentistry is sometimes helpful in the treatment of diseases not related to the teeth. For example, one of the women in Mississippi was conducted procedure osteo-odonto-keratoprosthetics in which a fragment of her teeth was used for the manufacture of microscopic "lens", implanted in her eyes instead of the native lens. To this end, we used "eye" tooth, that is canine.