What are teeth made of?
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They are made up of a complex double salt:CALCIUM SULPHATE.CALCIUM SILICATE          \nformula:CaSO4.CaSiO2.\nThe teeth is covered by an enamel of a highly inert and non reactive coating that does not react with most of metals and non-metals. But it can be deatched by excessive rubbing of teeth b either brushing or chewing.
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We either throw them in a "biohazard" container so they can be properly destroyed or sometimes we have dental students ask us to save extracted teeth for them so they can use them to practice.\n\nWe don't usually give people their teeth unless they are "baby" teeth. They just have too many germs on them.
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They are caps on your teeth.
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AMALGAM USED IN DENTAL FILLINGS IS PRIMARILY COMPOSED OF LEAD (Pb) AND MERCURY (Hg).THERE'S ALSO SOME OTHER METALS USED TO VARIOUS DEGREES DEPENDING ON THE AMALGAM MANUFACTURER. THESE METALS INCLUDE SILVER(Ag), COPPER (Cu), TIN (Sn)  AND SEVERAL  OTHERS. EACH KIND OF METAL IMPARTS DIFFERENT PROPERTIES.
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Neither.\nThey are composed largely of keratin, very closely related to the keratin found in skin.  They are made up of cells, but living ones, not dead.
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Tooth enamel is the hardest and most mineralized substance of the body. It is the normally visible dental tissue of a tooth. Enamel's primary mineral is hydroxyapatite, which is a crystalline calcium phosphate. The large amount of minerals in enamel accounts not only for its strength but also for its brittleness. \n\nThe eggshell is approximately 95% calcium carbonate crystals, which are stabilized by a protein matrix. Without the protein, the crystal structure would be too brittle to keep its form. \n\nThus both eggshells and teeth have crystalline calcium carbonate!
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Where are the teeth missing.  tooth development is pretty complicated,  All molars form from a single bud that kind of migrates back and sprouts four teeth.  Sometimes thing go hay wire and people are missing all the wisdom teeht or 3rd and seconds.  and every variation imaginable.  So there is nothing really else to know, except it happens all the time.  \n\nBut here are some key words for you to look up.\ntooth buds, Meckels Cartilage\nGood luck, hope you find what your searching for.
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Chocolates contain a lot of sugar.  Bacteria that live on our teeth can feed on this sugar, and as they do they produce acidic compounds that can damage our teeth.\n\nBrushing your teeth regularly helps remove some of these bacteria, as well as the excess nutrients from the food we eat (that the bacteria can feed on).
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George Washington had false teeth does that count...I think they were made of walrus tusk and not wood.
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the human body is made up of the following elements by %:\noxygen - 65 %\ncarbon - 18 %\nhydrogen-10%\nnitrogen- 3%\ncalcium - 2%\nand a few others in very small amounts.
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Mucus is made by goblet cells in the mucous membranes that cover the surfaces of the membranes. It is made up of mucins and inorganic salts suspended in water.
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it's decaying food.  Plaque is composed of bacteria, (both live and dead), the waste products from bacteria, food particles and other dead cells that the bacteria feed upon. This composition forms a greasy, sticky film on and in between teeth
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George Washington was not so lucky. He was inaugurated as president in 1789 with one tooth in his mouth, a lower left bicuspid. The Father of His Country had sets of false teeth that were made of everything but wood, from elephant ivory and walrus tusk to the teeth of a fellow human.
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Rocky is right.\n"Ivory" is just another name for dentine, which all mammalian teeth have. The interest in elephants and the rest of the animals mentioned is because they have dentine but lack enamel (the extremely hard outer layer of most teeth), therefore the entire tooth is available (except for the pulp cavity, of course). \nOther animals that have no enamel are for instance armadillos, aardvarks, and dugongs. Rodent incisors have enamel on the front surface only.
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Cavity. That's the word no one wants to hear at the dentist's office. A cavity (say: kah-vuh-tee) develops when a tooth decays (say: dih-kaze), or breaks down. A cavity is a hole that can grow bigger and deeper over time. Cavities are also called dental caries (say: kar-eez), and if you have a cavity, it's important to get it repaired.\n\nBut why would your tooth develop a hole? Blame plaque. That's a sticky, slimy substance made up mostly of the germs that cause tooth decay. The bacteria in your mouth make acids so when plaque clings to your teeth, the acids can eat away at the outermost layer of the tooth, called the enamel (say: ih-nah-mul). \n\nIf you don't go to the dentist, the acids can continue to make their way through the enamel, and the inside parts of your tooth can begin to decay. If you've ever had a toothache or heard an adult complain about one, it may have been because there was a cavity that reached all the way inside a tooth, where the nerve endings are. Ouch!\n\nYour dentist will carefully examine your teeth and may take X-rays. If your dentist discovers a cavity, he or she can repair it for you by first removing the rotted part of your tooth with a special drill. The dentist then fills the hole in your tooth with a special material. It's called a filling. \n\nDoes it hurt? Sometimes it does, but your dentist can give you an anesthestic. That's a kind of medicine that will numb the area around the problem tooth while you're getting your new filling.
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I'm a dentist.\n\nThere is no way someone's "friend" could do a "science project" studying whether or not sugar substitutes cause tooth decay....unless of course this "friend" had an entire lab with support staff and thousands of dollars worth of equipment.\n\nModern dental researchers use rats in carefully controlled environments.  They test for the effects of various materials on rats' teeth by sacrificing the rats and examining the teeth under electron microscopes...among other techniques.  It's not some high school science project like seeing which soil makes plants grow faster.\n\nThe answer to your question is "no".\n\nThese sweeteners, as far as I know, cannot be metabolized by the bacteria that cause tooth decay.\n\nTooth decay is caused by bacterial metabolism producing lactic acid as a waste product.  This lactic acid is what lowers the pH at the surface of your tooth and causes breakdown of the tooth structure.  If the bacteria residing on your teeth are not provided with food they can metabolize, then they cannot produce lactic acid and thus, cannot cause tooth decay.
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Bone is a relatively hard and lightweight composite material, formed mostly of calcium phosphate in the chemical arrangement termed calcium hydroxyapatite. It has relatively high compressive strength but poor tensile strength. While bone is essentially brittle, it does have a degree of significant elasticity contributed by its organic components (chiefly collagen). Bone has an internal mesh-like structure, the density of which may vary at different points.