Teeth toothpaste

The quality of toothpaste seems to improve every day. We have anticavity toothpaste, extra-whitening toothpaste, toothpaste with mouthwash, toothpaste for sensitive teeth, toothpaste with stripes, clear toothpaste, and even liver-flavored toothpaste for dogs. 

The principal commercial use of stannous fluoride is in toothpaste formulations and other dental preparations, eg, topical solutions, mouthwash, chewing gum, etc, for preventing demineralization of teeth (21—23) (see Dentifrices). 

Surfa.cta.nt, The primary purpose of a surfactant in toothpaste is to create a foam while the teeth are bmshed. This foam provides an enjoyable sensation. Secondarily, the surfactant helps remove material dislodged by the toothbmsh, and it may have minor effects on plaque accumulation (see Surfactants). 

It also is used in toothpastes, as a buffer, an emulsifier, and a detergent aid. It is the tartar control agent. It removes calcium and magnesium from the saliva, so they can t deposit on the teeth. 

But potassium nitrate is also used in toothpastes that are formulated to make teeth less sensitive to pain. As gums recede and the tooth root dentin becomes exposed, teeth can become hypersensitive to hot or cold foods. Potassium nitrate interferes with the transmission of pain signals in the nerves of the teeth. 

Modern toothpaste has to do many things. It must have abrasives to scour off bacterial films. It must have fluorides to harden the teeth against decay. It must have a strong enough pleasant... 

Sodium carbonate peroxide is added to peroxide toothpaste as a whitener. It breaks down into sodium carbonate (washing soda) and hydrogen peroxide. The hydrogen peroxide bleaches the teeth and kills germs. 

An understanding of non-Newtonian behaviour is important to the chemical engineer from two points of view. Frequently, non-Newtonian properties are desirable in that they can confer desirable properties on the material which are essential if it is to fulfil the purpose for which it is required. The example of paint has already been given. Toothpaste should not flow out of the tube until it is squeezed and should stay in place on the brush until it is applied to the teeth. The texture of foodstuffs is largely attributable to rheology. 

Often the need or desire can be satisfied by a substance that is presently on the market, but it is projected that a new product will either do a betteijob, cost less, or require less time and effort. The toothpastes produced before 1960 did a respectable job of cleaning teeth, but the addition of fluoride made them better cavity preventa-tives, and those toothpastes that added fluorides became the best sellers. Orange juice could be shipped in its natural form to northern markets, but frozen concentrated orange juice occupies one-fourth the volume and costs less to the consumer. TV dinners and ready-to-eat breakfast cereals cost more than the same foods in their natural state, but they reduce the time spent in the kitchen. All of these items resulted from research followed by design. 

Bones and teeth consist of hydroxyl-apatite (Ca phosphate). Tiny amounts of fluorine improves their resistance dramatically. Fluorine compounds in toothpaste prevent cavities. 

Stannous fluoride, a compound of tin and fluorine, is much less dangerous. It is added to drinking water and toothpaste to strengthen the enamel in the teeth of the user. Another compound of fluorine is teflon, a plastic made of carbon and fluorine, which is used in kitchenware. The fluorine-containing compound freon is used in air-conditioners and refrigerators, and is harmless. 

Anticavity toothpaste for sensitive teeth Sodium monofluorophosphate Sensodyne cool gel Cellulose gum Aqueous... 

There is one real, and bitter, problem associated with sodium lauryl sulfate. If you brush your teeth with an SLS-containing toothpaste and then drink orange juice, you may not like the taste. Oranges contain a fair bit of citric acid, which has both a bitter and a sour taste for some reason, sodium lauryl sulfate enhances the bitter taste and leaves the sour taste unaffected. 

Soft drinks have long been blamed for causing damage to teeth, especially among children. In this section the validity of this is discussed in the context of the widespread use of fluoridated toothpaste, mechanisms of damage are reviewed and ways of minimising damage are considered. 

What is the empirical formula of stannous fluoride, the first fluoride compound added to toothpaste to protect teeth against decay Its mass percent composition is 24.25% F, 75.75% Sn. 

Fluorine is used in the form of fluorides in drinking water and toothpaste because it reduces tooth decay by hardening the enamel on teeth. 

Alternatively, prepare a list of advertising slogans based on chemical concepts, such as Use Fluoride Toothpaste for Strong Teeth or Alpha Hydroxy Skin Cream Removes Wrinkles. Draw advertisements using color to evoke emotion, as discussed above, but also explain the chemical concepts involved in the slogans. Apply the principles of good composition to your advertisements. 

Silicone liquids are used by dentists in the preparation of dentures. Dentures become waterproof, their material is not leached by saliva. Food particles do not stick to such dentures mucous membranes in the mouth are not irritated, which often happens when dentures are produced from organic plastic masses. If silicone toothpaste is used, teeth are covered with a colourless film that prevents them from tartar. 

For the fifth year running the number of registered dentists in Europe has declined and in some areas people are travelling up to 50 kilometres to obtain their services. The drop in numbers is blamed on the success of the new toothpastes such as LoveSmile that were launched 15 years ago. These not only keep teeth brilliantly white but contain nanoparticles which can penetrate cavities and repair them from the inside, so there is no longer a need for dentists to drill and fill. 

Of course there is no such product as LoveSmile toothpaste, at least a search of the Internet failed to reveal one. What the above news item suggests is that a trip to the dentist is likely to become a rare event in the life of children bom today, unlike the regular visits to the dentist that most people have had to make in the past if they wanted to keep their teeth in good condition. The new ingredients mentioned in the... 

Used in foods, water and toothpaste to strengthen the surface materials of teeth - enamel. There is still a debate as to its value... 

The best-known sweetness inhibitor is sodium dodecyl sulfate (SDS), also known as sodium lauryl sulfate. This substance is a twelve carbon surfactant that is quite commonly used as a detergent in toothpaste. The observation is often made that after brushing one s teeth, the taste of orange juice is unusually bitter. This has been ascribed to the presence of SDS in the dentifrice (6 ). 

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