Interesting facts about dentistry. Interesting facts about dentistry and teeth Dentistry in ancient times
The sound of a dental drill can make some people faint, and going to the dentist is always associated with fear and pain. Having learned a lot of interesting facts about dentistry, you can safely plan a visit to the doctor, because a timely examination is the key to health and the secret of a dazzling smile.
general information
Dentistry is a branch of medicine that studies:
- structure, function and disease of human teeth;
- diseases of the oral cavity, jaws;
- ways of their treatment and prevention.
History of development in the world
The oldest drill, proving that more than 9,000 years ago people of that time could already drill and seal, was found on the territory of modern Pakistan.
The inhabitants of Ancient Egypt had prostheses that were made from animal bones, and for the pharaohs and the nobility - from ivory, gold threads served as fasteners.
The dentures of the ancient Incas of the 4th century BC were the shells of sea mussels. This became known after the remains of people found by archaeologists.
The "dentists" of Japan in the old days pulled out incisors and fangs only with their bare hands without the use of a special tool.
Lucy Hobbs Taylor, who studied at Ohio State College, was the first US woman to graduate in dentistry in 1866.
Numerous finds, materials and drawings were studied by specialists, as a result of which some interesting facts about dentistry of ancient times became known. For example, it was believed that the main cause of caries is a worm that makes holes and moves.
In ancient times, sick and affected teeth were distinguished mainly by representatives of rich and noble families. With access to high-quality and sweet food, their teeth were constantly exposed to bacteria that contribute to the development of caries. Along with this, the poor strata of the population, eating simple and affordable food, did not have such serious problems.
The history of the industry in Russia
The appearance of the first special devices and the beginning of the development of the direction in the country became possible thanks to Peter I. He brought devices for treatment from foreign trips. Some experts believe that the figure himself is also involved in the facts about the country's dentistry, since he learned to remove teeth, he happened to pull out as many as 72 pieces.
In 1881, the first school began its work, which trained future dentists; 450 people became its graduates in 1883.
At the end of the Great Patriotic War, a real peak in the development of the industry was observed - new higher educational institutions were opened, some research and experiments were carried out, and the production of installations and drills was launched. Also at that time, an abundance of fundamental works and interesting articles about dentistry were created and written by leading scientists and doctors.
Anesthesia
The 18th century was the beginning of the use of anesthetic components for manipulations in the oral cavity. One of the first to use nitrous oxide, the inhalation of which led to loss of consciousness, at this time, dentists took over. Later, in the 19th century, it became possible to use arsenic to remove nerves.
Muscles and chewing
Observations show that right-handers often chew on the right side of the jaw, left-handers - on the left. However, this does not apply to those cases when a person chews only on the side where there are no sick and disturbing areas.
Theoretically, the maximum pressure of the masticatory muscles of one jaw is 195 kilograms. However, we can talk about an average of 15 kilograms, the maximum is possible when trying to crack a walnut - about 100 kilograms.
The volume of saliva formed in the human mouth per day is 1.5 liters.
Identical twins once again prove the strong similarity and relationship of two people. If for some reason a tooth has not grown in one of the twins, then the other one will be missing the same one.
Tooth enamel is rightfully considered the strongest and hardest tissue in the human body, but teeth, unfortunately, are not able to regenerate on their own.
In the 18th century, the amount of agricultural land devoted to the cultivation of sugar cane began to grow. This led to an increase in the consumption of sugar in food, and consequently, to the massive occurrence of caries.
In the oral cavity of newborn babies there are no bacteria that affect the formation of caries. Transmission of these microorganisms occurs later through contact with the mother.
Experts have determined that the peak incidence of caries in the world in our time falls on the year the production of Coca-Cola carbonated drink began.
Scientists in the course of research have found that cocoa powder contains a component that prevents the appearance and development of caries. However, we are talking about pure cocoa, and not about sweet chocolate with a high sugar content.
William Semple proposed in 1869 that sugar be added to chewing gum to improve its palatability, which ultimately led to an increase in the incidence of caries among the population.
Paste
The sweetness of sodium saccharin is 500 times higher than regular sugar. This substance is used in the manufacture of toothpaste.
Swallowing a product containing fluorine can lead to intoxication, which is especially not desirable for young children under 5 years of age. As part of their paste, fluorine must be absent.
The well-known company Colgate, which specializes in the production of oral care products, does not have high sales volumes in the Spanish market and some Latin American countries. After analyzing the data and research, analysts concluded that the reason for the low performance is the dissonant brand name. Translated into Spanish, it sounds like a call to action: "cuelgate" - "go and hang yourself."
Dentures and plates
Before the advent of modern ceramic prostheses, prosthetics were widely used from the real teeth of soldiers who died during the fighting.
In the Middle Ages, jewelers made prostheses, and hairdressers performed the treatment. The essence of this therapy was the usual removal.
The list of interesting facts about teeth and dentistry will also be supplemented by the old English tradition of giving dentures for a wedding. Since the teeth would soon fall out, it was believed that their removal and replacement now would lead to better wound healing and the installation of prostheses.
Pierre Fauchard in 1728 invented a metal plate-strip, with which it was possible to correct malocclusion. The doctor also became the author of such useful inventions as a metal crown and pin.
Sale and auctions
The most expensive lot in the history of dentistry, which has been considered as such for more than 2 centuries, is the tooth of Isaac Newton. It was bought at auction in 1816 by a wealthy aristocrat, the final price of the auction was $ 3,240, and later it became a ring decoration.
On July 29, 2010, the KIZ auction house received an incredible amount of £15,200 from a collector for a denture sold at auction that once belonged to Winston Churchill.
However, these are not the most expensive lots, since Canadian dentist Michael Zuk on November 5, 2011 became the proud owner of the molar of the famous musician John Lennon. The payment for such a unique lot was £19,500. Today it is an absolute record in this category.
Guinness World Records
In New Zealand, a record was set for brushing teeth in a circle. The action was attended by 400 students from the Chilton School of St. James, each of whom brushed the teeth of a friend nearby. Prior to this, 300 people were involved in a similar event in America.
The largest collection of pasta is owned by the American doctor-prosthetist Valery Kolpakov, who was born and lived until recently in Russia. It contains more than 1,800 tubes of different types and flavors of this oral care product.
The unusual record for spinning a basketball on a toothbrush belongs to Tenshwar Guragai. He managed to hold the spinning ball for a whopping 22.41 seconds.
A resident of Georgia Nugzar Gograchadze was recognized as a person who has the strongest teeth. Holding a rope in his mouth, to which 5 railway train cars were attached, he managed to move them.
strange beliefs
In ancient times, there were many strange recipes to eliminate pain or strengthen the gums. Some of them may shock modern man:
- In Arab countries in the Middle Ages, patients took a laxative, followed a strict diet and worked hard physically. All these recommendations were supposed to make a person forget about the painful place, in case of ineffectiveness of the "treatment" - cauterization was carried out with a red-hot iron.
- The most popular mouthwash in the Middle Ages was a tincture of dog fangs in wine.
- A live frog, which was tied to the jaw, was supposed to save people from suffering and pain.
- A decoction of earthworms was widely used for instillation into the ears.
Brush
The first cleaning devices appeared in 1498 in China, for this they used the bristles of a pig, horse hair and badgers. In 1938, a modern-looking synthetic (nylon) brush was put into production.
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2) More recently, dentures were a common wedding gift in the British Isles, as people were very afraid that they would soon lose all their teeth and forced this by extracting teeth at a relatively young age.
3) For the first time, nylon bristle toothbrushes appeared in 1938. But long before that, there were brushes with bristles made of other materials. For example, the first such brushes appeared in China in 1498. Pig bristle, badger and horse hair served as materials for them.
4) Like many Chinese, Mao Zedong has never brushed his teeth before. Instead, he rinsed his mouth with tea and chewed the tea leaves. He said: "Why brush your teeth? Does a tiger ever clean them?"
5) In China, in order to increase interest in maintaining healthy teeth and gums among its 12 million people, a national holiday was introduced, which takes place every year on September 20, and its name translates as "Love Your Teeth Day."
6) The absolute strength of the masticatory muscles on one side is 195 kg, and the contraction of the muscles on both sides sometimes reaches a force of 390 kg. Naturally, the periodontium will not be able to withstand such pressure, and the usual chewing pressure is therefore 9-15 kg (maximum 100 kg if you gnaw nuts).
7) For the first time in 1869, dentist William Semple added sugar to chewing gum.
8) The popular toothpaste manufacturer Colgate™ has encountered an unexpected complication when distributing its products to the Spanish-speaking market. Colgate means "go hang yourself" in Spanish.
9) A woman, under Vermont (USA) law, is not allowed to wear dentures without her husband's written permission.
10) Before the invention of ceramic artificial teeth technology in the 19th century, the teeth of soldiers who died on the battlefield were used as a material for dentures. So, after the civil war in the United States, dentists in England received such goods in whole barrels.
11) The electric chair was invented by a dentist.
12) If you are right-handed, then you chew the main part of the food on the right side of the jaw, and vice versa, on the left side if you are left-handed.
13) Aristocrats at the court of the French king Louis XI ate only soup, because they were sure that strong chewing efforts could cause premature wrinkles on the face.
14) Japanese dentists several centuries ago removed teeth with their bare hands.
15) The first "dentists" were the Etruscans. They are from the teeth of various mammals as early as the 7th century BC. they cut out artificial teeth, and also learned how to make bridges strong enough for chewing.
16) Dentures may contain radioactive elements. Of the 1 million prostheses, approximately 50% have a ceramic component with microscopic inclusions of uranium. Under artificial lighting without the addition of uranium, the prostheses would have a matte green tint.
17) According to the American Dental Association, more than half of American schoolchildren have no cavities in their permanent teeth, compared with 26% in the 70s.
18) Despite the need for calcium for bone tissue, 99% of all calcium in the body is found in the teeth.
19) The very first orthodontic appliance was made by Pierre Fauchard in 1728. It was a flat strip of metal attached to the teeth with a thread.
20) George Washington, who had almost no teeth of his own, was very attentive to the condition of the teeth of his 6 horses, ordering them to be examined and cleaned every day.
21) Several studies have already established that cocoa powder, which is part of chocolate, contains components that prevent the formation of caries.
22) If one of the identical twins does not have one or another tooth, usually the other one does not have the same tooth.
23) About 5,000 years ago, toothpaste was invented by the Egyptians. It was a mixture of pumice and wine. From the time of the early Roman Empire until the 18th century, one of the main components of toothpaste was urine, since the ammonia contained in it has excellent cleansing properties. Ammonia is still found in many toothpastes.
24) Approximately 1.4-1.5 liters of saliva is formed in the mouth per day.
25) Stores in Providence, Rhode Island, USA, are prohibited by law from selling toothbrushes on Saturday.
26) Only 20% of diamonds are cut. Due to the hardness of the stone, most diamonds are used to make various tools, such as, for example, dental burs.
27) Boron was invented by John Greenwood in 1790.
28) The most expensive tooth was the tooth of Isaac Newton, sold in 1816 for 730 pounds (about $ 3,241 today), after which he was inserted into the ring by the aristocrat who bought it.
29) Lucy Taylor became the first certified female dentist in the US in 1867.
30) The most widespread diseases in the world are various periodontal lesions, such as, for example, gingivitis (inflammation of the gums). Few manage to escape one form or another.
31) About 13 tons of gold per year for the manufacture of bridges, crowns, inlays and dentures is used by American dentists.
32) There are 7 collection centers for used toothpicks in the Chinese city of Kulang. For every pound (about 454 grams) of toothpicks, he pays 35 cents.
Tooth- the only part of the human body that is incapable of self-healing.
Toothbrushes with nylon bristles first appeared in 1938. However, brushes with bristles made from other materials existed long before that. So, in China, the first such brushes appeared in 1498. The materials for them were pig bristles, horse and badger hair.
George Washington, who had almost no teeth of his own, took great care of the teeth of his six horses every day, ordering them to be inspected and cleaned.
If you are right-handed, then you chew most of the food on the right side of the jaw, and vice versa, if you are left-handed, then on the left.
Tooth enamel is the hardest tissue produced by the human body.
Although calcium is essential for bone tissue, 99% of all calcium in the body is found in the teeth.
Absolute the strength of the chewing muscles on one side is 195 kg, and muscle contraction on both sides can reach a force of 390 kg. Of course, the periodontium cannot withstand such pressure, and therefore the usual chewing pressure is 9-15 kg (well, a maximum of 100 kg if you gnaw nuts).
The first "dentists" were the Etruscans. They carved artificial teeth from the teeth of various mammals as early as the 7th century BC, and were also able to make bridges strong enough to chew.
During the day, approximately 1.4-1.5 liters of saliva is formed in the mouth.
Toothpaste was invented by the Egyptians about 5,000 years ago and was a mixture of wine and pumice. From the time of the early Roman Empire until the 18th century, urine was one of the main ingredients in toothpaste. the ammonia contained in it has excellent cleansing properties. Until now, ammonia is part of many toothpastes.
The most expensive tooth was that of Isaac Newton, sold in 1816 for £730 (approximately $3,241 today), after which it was set into a ring by an aristocrat who bought it.
Under Vermont law, a US woman is not allowed to wear dentures without her husband's written permission.
Green tea is beneficial, in dentistry, as a disinfectant for rinsing the mouth. Gargling with green tea suppresses streptococcal infection in the throat, strengthens the gums and, as a result, is a means of preventing caries and periodontal disease.
Lower jaw found by Dr. Mrs. Wilson Popenoe in Honduras in 1931. Three stones are inserted into the holes of the incisors. The earliest of the exhibits, showing us the successful use of allografts on living people. Dated 600 AD.
To raise interest in maintaining healthy teeth and gums among its 12 million people, China has established a national holiday, which can be translated as "Love Your Teeth Day", which takes place every year on September 20th.
World-famous toothpaste manufacturer Colgate has encountered an unexpected hurdle in marketing its products to Spanish-speaking countries. Translated from Spanish, "colgate" means the command "go and hang yourself."
Before the technology of making artificial ceramic teeth was invented in the 19th century, the teeth of soldiers who fell on the battlefield were used as material for dentures. So, after the civil war in the United States, English dentists received whole barrels of such goods.
Toothpaste was invented by the Egyptians about 5,000 years ago and was a mixture of wine and pumice. From the time of the early Roman Empire until the 18th century, urine was one of the main ingredients in toothpaste. the ammonia contained in it has excellent cleansing properties. Until now, ammonia is part of many toothpastes.
After a cold or an infection, the toothbrush becomes colonized with disease-causing bacteria, which can lead to reinfection. Therefore, always change your toothbrush after an illness.
Sodium saccharin, commonly used as a sweetener in toothpastes, is 500 times sweeter than regular sugar.
During the flushing of the toilet, bacteria and small particles are released within a radius of several meters. So, if you flush with the toilet lid open, then the distance between the toilet and the place where you keep your toothbrushes should be more than 3 meters.
In the year that Coca-Cola production began, there was a sudden massive surge in the incidence of dental caries.
The popular practice of placing protective caps on toothbrushes actually encourages bacterial growth on the toothbrush, as the enclosed space creates conditions of high humidity.
Active brushing does more harm than good. It can lead to pathologies such as tooth sensitivity, or erosion of tooth enamel.
American scientists have found that people who live only on subsistence farming and do not eat the food of modern man have absolutely no caries. For example, the strong teeth of the inhabitants of Alaska, the Eskimos, even taking into account the fact that they have a special relationship with hygiene, can be the envy of any civilized person.
Turns out it's all about the diet. The diet of the indigenous inhabitants of the north mainly consists of fish, seal oil, caviar, berries, nuts, venison and all kinds of vegetables. But the products that are the main cause of caries are completely absent. These are preservatives, dyes, soft flour bread and sucrose. Another factor influencing the absence of caries is hard food. It strengthens the teeth of the Eskimos, while our teeth become thin from soft foods, and therefore more susceptible to caries.
New York dentist Lawrence Spindel said that popcorn can cause severe mechanical damage to teeth. Moreover, this product is strictly contraindicated for people with crowns and fillings on their teeth, which tend to fall off or crack due to the abuse of popcorn. “It destroys enamel so much that it would be more useful to chew stones!” - Lawrence is indignant, examining his negligent patients.
Sometimes the weekend becomes another working day, and our body cannot “tune in” to the continuation of the working week. Many people use energy drinks to overcome the fatigue caused by lack of sleep, and in doing so, cause tremendous damage not only to the central nervous system, stomach, heart, but also to the teeth. The high level of acid contained in the "energy" leads to the destruction of the protective shell of the teeth - enamel. This is especially acute in adolescents: their teeth do not contain enough calcium and are destroyed much faster. Doctors warn: "such damage can be irreparable."
According to research, the top three most harmful energy drinks are: Red Bull Sugarfree, Monster Assault and Von Dutch. The higher the place in the ranking, the higher the level of acidity of the drink. To protect yourself from the harmful effects of energy drinks, Startsmile recommends using less dangerous alternatives, such as tea or coffee, because they also invigorate.
Kissing promotes oral health, and this is a scientific fact. Members of the American Academy of Cosmetic Dentistry explain: first of all, kissing causes an increase in salivation, which means it helps to better clean teeth from harmful plaque - one of the main causes of holes in the enamel. In addition, we all remember that caries is an infectious disease. Therefore, kissing a person with good immunity, you can increase the defenses of your body. True, it is worth mentioning here that there is a possibility, and, conversely, to get infected from your partner. And finally, kissing trains the muscles of the oral cavity, keeping them in good shape. So even if you're not planning on celebrating Valentine's Day tomorrow, there's a great excuse to date your loved ones!
An experiment conducted at Nagoya University, Japan, revealed another way to use stem cells derived from wisdom teeth. After transplanting them into rats with severe spinal cord injuries, the rodents showed a marked improvement in hind limb function. A detailed analysis showed that pulp cells have a triple action: they prevent the death of nerve and supporting cells, help regenerate damaged nerves, and replace dead supporting cells. The researchers hope that they are on the verge of a great discovery that will be a lifesaver for people who have become disabled as a result of spinal problems.
Research supported by the American Dental Association has revealed an interesting pattern. It turns out that people endowed by nature with red hair are more likely than others to experience fear of a visit to the dentist. For scientific work, 144 volunteers were selected, 67 of which were red, and 77 were brown-haired and brunettes. All participants completed a questionnaire on fears and anxieties associated with visiting dentists. The scientists then took blood samples from them to test for common gene variations. It turned out that people with the MC1R gene are more than 2 times more likely than others to postpone their trip to the dentist because of the fear of treating their teeth. At the same time, out of 85 people with MC1R in their gene code, 65 were red. Geneticists attribute this to the fact that this gene may be responsible for a person's immunity to painkillers.
Scientists from the Berlin Institute for Human Development of the Max Planck Society have established that a smile can mislead your interlocutor about your age. Each of the 154 study participants, men and women of various ages, underwent at least 10 test sessions in which they were shown more than 1,000 photographs of people - with angry, scared, cheerful, sad and neutral facial expressions - for which they were required to determine the age. At the same time, the models were forbidden to use cosmetics and wear any jewelry before the photo shoot. It turned out that volunteers perceive a smiling person younger than his real age. On the one hand, this may be due to the fact that temporary facial wrinkles that appear on the face when smiling successfully mask permanent, age-related wrinkles. On the other hand, optimism is considered the prerogative of youth, so a cheerful face seems more youthful. In any case, there is only one conclusion - smile more!
The name of Pierre Fauchard is not well known to the general public, meanwhile, this court physician, who lived in France at the turn of the 16th-17th centuries, was one of the most brilliant inventors in the history of dentistry. For example, it is to him that we owe orthodontic brackets: he came up with the idea that the unevenness of the dentition can be corrected by attaching teeth with threads to an iron arch. Fauchard can also be considered the father of prosthetics, because he not only invented many ways to replace missing teeth, but also laid the foundation for the manufacture of aesthetic porcelain crowns. The great Frenchman managed to make a reform in therapy too: by examining teeth under a microscope, he debunked the myth of worms that gnaw holes in enamel. The dentist also offered to fight the effects of caries with the help of amalgam fillings. But Pierre's main achievement, perhaps, was that he proved that the dentist is capable of more than just removing a bad tooth, and inspired many followers to new discoveries.
The prototype of the toothpaste tube familiar to us was invented in 1892 by a dentist from New London, Connecticut, USA, named Washington Sheffield. The doctor was inspired by stories about an American artist who stored paint in tin tubes. Thanks to Sheffield's imagination, the tube was transformed into a tube. The dentist set up the production of toothpaste in innovative packaging, but he did not guess to patent his "brainchild". But the smarter New York pharmacist William Colgate did not miss his chance and became the owner of all rights to the invention. But, in fairness, it is worth noting that at one time it was William who guessed to dilute tooth powder and get some kind of paste.
It is well known that red wine can stain tooth enamel. But until recently, few people guessed about the harmful effects of white wine on the teeth.
A team of scientists from the Johannes Gutenberg University of Mainz, Germany, conducted a study on the effect of different varieties of white and red wine on the tooth enamel of men and women aged 40 to 65 years. During the experiments, the teeth were placed in a vessel with wine for a day, and then carefully analyzed under a microscope. As a result, it turned out that contact with white wines causes much more severe erosion of the enamel.
Previously, researchers have reported negative effects on the teeth of tea, coffee, fruit juices, sugary drinks and soda. So, if you care about your oral health, fill your glass with mineral water…before the scientists get to it.
A resident of the Indian state of Uttar Pradesh, 110-year-old Baldev has been smiling "from ear to ear" for some time now with or without reason. The reason for this is two new teeth that erupted from the old man to his joy and surprise. Doctors tend to explain this "miracle of nature" by the possible rejuvenation of the body, which occurs with a healthy lifestyle. Born in the village of Kishundaspur and spending more than a century there, Baldev ate plant foods all his life, having no funds to purchase products with chemical additives. Baldev himself is calm about the fact that he has not tried many delicacies. But now his house is full of guests from morning to evening, to whom he gladly not only shows his teeth, but also allows the “chosen ones” to touch them.
Residents of hot countries can seriously save on dental care. By splitting a branch of a tree of the Salvador genus at one end, they will receive a toothbrush that is no less effective (according to the American Dental Association) purchased at a pharmacy. In addition, it does not require the use of any powders or pastes.
The first such "tooth sticks" - soaked twigs - appeared in ancient Egypt about five thousand years ago - this is evidenced by the results of excavations in the pyramids.
Africans have long noted that the combination of two types of fibers, soft and hard, in Salvadora wood is ideal for cleaning tooth enamel. In the Muslim East, the tree is called "arak", and sticks from it - "mizvak". One medieval Arabic poet wrote:
“When she smiled, exposing a row of white teeth,
Polished with juicy and sweet arrack,
Their brilliance was like the sparkle of the sun's rays ... "
In addition, salvadoran bark contains plant compounds that help strengthen gums and kill germs.
The impetus for the development of dentistry in Russia and its transformation into a scientific discipline was given by the restless reformer Peter I. In 1707, by his decree, the first land military hospital was built on the banks of the Yauza. Under him, interestingly, a medical-surgical school began to work, which trained doctors and assistant doctors. The hospital and the school were led by Nicholas Bidloo, a Dutchman by birth, a graduate of the famous Leiden-Batavian Academy. Bidloo taught the students himself, with special attention to dentistry. In the same year, by decree of Peter I, for the first time in Russia, the title of dentist was introduced for graduates of hospital schools who passed a special exam.
It is unlikely that you imagined that the contents of jars of spices can become a healing potion for teeth.
Spices that almost any housewife has have many useful properties.
Ginger is truly versatile: it has a cleansing, antibacterial, antifungal, sedative (soothing), anti-inflammatory and immunomodulatory effect. Due to its high antimicrobial activity, ginger can help heal many inflammatory diseases of the oral cavity, including stomatitis and gingivitis.
Clove protects against infections, and in addition, acts as a local pain reliever for toothache.
1. Our muscles, which help in the process of chewing food, are capable of delivering an onslaught of about 195 kilograms. But in everyday life we use barely 15. When a person cracks open a nut, the pressure rises to 100 kilograms.
2. Nylon toothbrushes originated in the first half of the 20th century, and nylon prostheses in the second half of the 20th century, but in ancient China, before that, at the end of the 14th century, animal hair brushes were made
3. When, due to any reason, one of the monozygotic twins does not grow a tooth, then the second one will not grow the same tooth either. But this theory would not involve the loss of a tooth due to physical damage.
4. Before the advent of artificial prostheses, those already existed. For this, the teeth of the dead soldiers were exploited.
5. American dentists annually use thirteen tons of gold to make various prostheses and so on.
6. In 1816, I. Newton's tooth was sold for $ 3240 to an aristocrat who mounted this gold in his ring.
7. Old Japanese "doctors" removed teeth only by the power of their hands.
8. In Britain, dentures were often considered the best wedding gift. They, taking care of the future, believed that dentures take root better at a young age.
9. Only human teeth cannot regenerate, although they are the strongest organ.
10. A person chews food with the other side of the jaw, depending on which hand he writes with. Naturally, in the absence of diseases on any of the parties.
11. W. Semple in 1869 thought for the first time to sweeten chewing gum.
12. The Etruscans are regarded as the founders of dentistry. They made artificial teeth from animal teeth as early as the 7th century BC.
13. Calcium is good for bones, hair and nails, but almost 100% is concentrated exactly in the teeth.
14. The original mechanism for correcting a tooth was in the form of an iron band. Discovered by the Frenchman P. Fauchard in 1728.
15. Many professors assure: cocoa, which is an integral part of chocolate, stops the development of caries. But you do not need to consume chocolate excessively, because the sugar in its composition negatively affects the enamel.
16. About one and a half liters of salivary secretion is formed in the oral cavity every day.
17. The most common diseases on Earth are dental disorders.
18. In ancient Egypt, the first toothpaste appeared, about 5,000 years ago. For its manufacture, wine and rhyolite were mixed. Until the 18th century, a resinous liquid (extracted from urine) was added to the paste, which had amazing bleaching qualities. To date, ammonia, extracted in a slightly different way, is also found in the structure of modern toothpaste.
19. In humans, teeth are transformed 2 times during their life: first - 20 milk teeth, then - 32 molars. The concept of milk teeth was introduced by Hippocrates. He was sure that the initial children's teeth are formed from mother's milk.
According to legend, the Buddha had 40 teeth in its mouth. And the first man, Adam, had 30 teeth. From this number comes the number of days in a month.
As you know, in an ordinary person, teeth change twice during a lifetime: first, 20 milk teeth appear, and then 32 true teeth. By the way, the name "milk teeth" was given by Hippocrates, who was convinced that the very first teeth of a child are formed from milk.
Oddly enough, scientists have proven that cocoa powder, which is part of chocolate, contains substances that prevent the formation of caries.
The first electric toothbrush was patented in Switzerland after World War II. She worked on electricity. Although this idea seemed strange to many, the electric toothbrush quickly gained popularity. Now 12% of people worldwide use an electric toothbrush.
Thanks to modern technologies in dentistry, 46% of Russians are not afraid of dentists at all. However, the remaining 54% of citizens said that a visit to the dentist causes them some dislike.
The most expensive tooth in the world was Isaac Newton's, sold in 1816 for $3,300. The aristocrat who bought it inserted this tooth into his ring.
A snail has about 25,000 teeth.
History remembers such a case when one courtesan revealed the secret of white teeth to Dumas son: “We must lie more, because teeth whiten miraculously from this”
The Maya natives painted their teeth with turquoise and jade, inserted expensive stones into their teeth. And the beloved women of the pirates of the Caribbean sported teeth made of diamonds.
People who brush their teeth three times a day are less likely to be overweight. This conclusion was reached by Japanese scientists. They reportedly studied the lifestyle of 14,000 people.
The most dangerous sport for teeth is hockey. 68 percent of professional hockey players have lost at least one tooth on the field.
Proved by medicine, the presence of strong teeth is directly reflected in the memory of a person.
99% of all calcium in the body is in the teeth.
Have you ever wondered how many times you can reinvent the toothbrush? Imagine, according to statistics, more than 3,000 toothbrush models have been patented since the 60s of the last century!
The most exotic toothbrush options:
- ionized brush, the action of which is based on the interaction of charges of opposite polarity
- brush with three heads, allowing you to clean the tooth from three sides at once;
- brush with automatically injected cleaning solution
-electric toothbrush with built-in timer.
In ancient Rome, the patricians hired special slaves to brush their teeth.
As it turned out, business leaders (67% are afraid), as well as housewives (72%) are most afraid of dentists. And military personnel experience the least fear of the dentist (72% are not afraid).
Sugar was first added to chewing gum EXACTLY by a dentist (William Semple in 1869). By the way, the electric chair was also invented by a dentist.
Teeth can be stored for a very long time, not succumbing to water, alkalis, and can withstand temperatures up to 1000 degrees.
Not so long ago, dentures were a popular wedding gift in the British Isles. People expected that they would soon lose all their teeth and themselves accelerated the process of tooth extraction at a young age.
Under Vermont (USA) law, a woman cannot wear dentures without her husband's written permission.
- In China, there is even a national holiday: “Love Your Teeth Day”, it takes place on September 20th.
In 1999, in the city of Phoenix (USA), an action "For a healthy smile" was held. 1,300 American schoolchildren, lined up in the shape of a toothbrush, simultaneously brushed their teeth for 3 minutes 3 seconds.
German scientists have found that eating two grapefruits a day significantly reduces the risk of diseases in the oral cavity.
In the Middle Ages, to strengthen loose teeth, dentists recommended tying a frog to the jaw.
Tooth enamel is the hardest tissue produced by the human body.
Toothpaste was invented by the Egyptians about 5,000 years ago and was a mixture of wine and pumice.
The first toothbrushes appeared in China ONLY about 500 years ago. The materials for them were pig bristles, horse and badger hair.
As statistics show, Russian men are much bolder than women. 60% of women are afraid to visit the dentist's office. Among men, this figure is only 45%.
Due to the hardness of diamond, most of these stones are used to make dental burs. And only about 20% of diamonds are processed by jewelers.
American dentists use about 13 tons of gold per year to make gold crowns.
Ancient Japanese dentists removed teeth with their bare hands.
The tooth is the only part of the human body that is incapable of self-healing. But in elephants, new teeth can grow up to 6 times.
In the Chinese city of Kulang, there are as many as 7 organizations for collecting used toothpicks. For every kilogram of toothpicks, such an organization pays $1.
Stores in the state of Rhode Island (USA) are prohibited by law from selling toothbrushes on Saturday.
If you are right-handed, then you chew most of the food on the right side of the jaw, and vice versa, if you are left-handed, then on the left.
By the way, the absolute strength of the masticatory muscles can reach a force of 390 kg. Of course, not every tooth can withstand such pressure, and therefore the usual chewing pressure is 9-15 kg (well, a maximum of 100 kg if you gnaw nuts).
If one of the identical twins is missing one or another tooth, as a rule, the same tooth is missing in the other twin.
Hard, skillful teeth are said to be a sign of an energetic, warlike person. Small teeth are associated with pettiness and greed, and large teeth with kindness and openness of character.