Toothpaste is a
pasteor gel dentifriceused to clean and maintain the aesthetics and health of teeth. Toothpaste is used to promote oral hygiene: it can aid in the removal of dental plaqueand foodfrom the teeth, aid in the elimination and/or masking of halitosisand deliver active ingredients such as fluorideor xylitolto prevent tooth and gum disease ( gingivitis). In most or all developed countries, usage after each meal is encouraged. Most toothpaste contains chemicals which are toxic when ingested, and is not intended to be swallowed.
Evidence of oral hygiene practices first appears in the archaeological record around 5000 years ago in Egypt, China, Mongolia and India.Fact|date=September 2008
The earliest known reference to a toothpaste is in a manuscript from
Italyin the 4th century AD, which prescribes a mixture of powdered salt, pepper, mint leaves, and iris flowers. The Romans used toothpaste formulations based on human urine.citeweb|url=http://www.beautyriot.com/article.php?id=2102&c_id=9|title=Ingredients in toothpaste|accessdate=2007-12-23] In the 9th century, the Persian musician and fashion designer Ziryabis known to have invented a type of toothpaste, which he popularized throughout Islamic Spain. The exact ingredients of this toothpaste are not currently known, [citation|last=Lebling Jr.|first=Robert W.|title=Flight of the Blackbird|journal= Saudi Aramco World|date=July-August 2003|pages=24-33|url=http://www.islamicspain.tv/Arts-and-Science/flight_of_the_blackbird.htm|accessdate=2008-01-28] but it was reported to have been both "functional and pleasant to taste".citation|last=Sertima|first=Ivan Van|authorlink=Ivan Van Sertima|year=1992|title=The Golden Age of the Moor|page=267|publisher= Transaction Publishers|isbn=1560005815] It is not known whether these early toothpastes were used alone, were to be rubbed onto the teeth with rags, or were to be used with early toothbrushes such as neem treetwigs or " miswak". It is known that these twigs were used by Indians from ancient times. Neem tree twigs are said to have good medicinal effects.
Tooth powders for use with toothbrushes came into general use in the 19th century in Britain. Most were homemade, with
chalk, pulverized brick, or saltas ingredients. An 1866 Home Encyclopedia recommended pulverized charcoal, and cautioned that many patented tooth powders that were commercially marketed did more harm than good.Fact|date=August 2007
An 18th century American and British toothpaste recipe containing burnt bread has been found. Another formula around this time called for
dragon's blood(a resin), cinnamon, and burnt alum.citeweb|url=http://www.toothpasteworld.com/history.htm|title=Other ingredients in toothpaste|accessdate=2007-12-23]
By 1900, a paste made of
hydrogen peroxideand baking sodawas recommended for use with toothbrushes. Pre-mixed toothpastes were first marketed in the 19th century, but did not surpass the popularity of tooth-powder until World War I. In 1892, Dr. Washington Sheffield of New London, Connecticut, manufactured toothpaste into a collapsible tube. Sheffield's toothpaste was called Dr. Sheffield's Creme Dentifrice. He had the idea after his son traveled to Paris and saw painters using paint from tubes. In New York Cityin 1896, Colgate & Company Dental Cream was packaged in collapsible tubes imitating Sheffield. Fluoridewas first added to toothpastes in 1914, and was criticized by the American Dental Association(ADA) in 1937. Fluoride toothpastes developed in the 1950s received the ADA's approval. To develop the first ADA-approved fluoride toothpaste, Procter & Gamblestarted a research program in the early 1940s. In 1950, Procter & Gamble developed a joint research project team headed by Dr. Joseph Muhler at Indiana University to study new toothpaste with fluoride. In 1955, Procter & Gamble's Crest (toothpaste)launched its first clinically proven fluoride toothpaste. On August 1, 1960, the ADA reported that "Crest has been shown to be an effective anticaries (decay preventative) dentifrice that can be of significant value when used in a conscientiously applied program of oral hygiene and regular professional care." Countries limit and suggest different amounts of fluoride acceptable for health. Much of Africahas a slightly higher percentage than the U.S. Fact|date=April 2007
In June, 2007, the US
Food and Drug Administrationand similar agencies in Panama, Puerto Ricoand Australiaadvised consumers to avoid certain brands of toothpaste manufactured in China, after some were found to contain the poisonous diethylene glycol, also called diglycol or labeled as "DEG" on the tube. The chemical is used in antifreezeas a solvent and is potentially fatal.citeweb|url=http://www.msnbc.msn.com/id/18985512/|title=MSNBC: Throw away Chinese toothpaste, FDA warns|accessdate=2007-12-23]
Toothpaste is most commonly sold in flexible
tubes, though harder containers are available. The hard containers stand straight up, availing more of the toothpaste and saving shelf space. Because toothpaste tubes are now usually plastic, the easiest way to get the last bit out of the seemingly empty tube is simply to cut it open with scissors. Most tubes have enough paste available for 10-30 more brushes. If you cut it across the tube 2/3 from the end, the other 1/3 forms a natural almost airtight cap.
Ingredients and flavors
Fluoridein various forms is the most popular active ingredient in toothpaste to prevent cavities. Although it occurs in small amounts in plants and animals, and has effects on the formation of dental enamel and bones, it is not considered to be a dietary essential and no deficiency signs are known. Sodium fluoride(NaF) is the most common form; some brands use sodium monofluorophosphate(Na2PO3F). Much of the toothpaste sold in the United States has 1000 to 1100 parts per million fluoride ion from one of these active ingredients, in the UK the fluoride content is often higher, a NaF of 0.32% w/w (1,450 ppm fluoride) is not uncommon. This consistency leads some to conclude that cheap toothpaste is just as good as expensive toothpaste. When the magazine Consumer Reportsrated toothpastes in 1998, 30 of the 38 were judged excellent. Application of fluoride also prevents moisture build-up in some surfaces.Fact|date=February 2007
Other ingredients are less commonly used, including
Hydroxyapatite nanocrystals and calcium phosphatefor remineralization, [ [http://www.dentist.net/amorphous-calcium-phosphate2.asp Calcium Phosphate Technologies from dentist.net ] ] and strontium chlorideor potassium nitrateto reduce sensitivity.
In addition to fluoride, the other fundamental ingredient in most toothpastes is an abrasive.Fact|date=February 2007 Studies have shown that abrasives in toothpaste reduce the time needed to remove plaque from the teeth by approximately 50%. Abrasives, like the dental polishing agents used in dentist's offices, also cause a small amount of enamel erosion which is termed "polishing" action. Some brands contain powdered white
micawhich acts as a mild abrasive, and also adds a cosmetically-pleasing glittery shimmer to the paste. Many may contain frustules of dead diatomsas a mild abrasive. The removal of plaque and calculus prevents caries and periodontal disease. The polishing of teeth removes stains from tooth surfaces, but has not been shown to improve dental health over and above the effects of the removal of plaque and calculus.
Many, though not all, toothpastes contain sodium lauryl sulfate (SLS) or another of the sulfate family. SLS is found in other personal care products as well, such as shampoo, and is largely a foaming agent although it also acts as a powerful antimicrobial. Due to the anionic charge of SLS, mouthwashes containing cetylpyridinium chloride (which has a cationic charge and thus neutralises SLS) should not be used straight after brushing. SLS may cause a greater frequency of
mouth ulcers in some people as it can dry out the protective layer of oral tissues causing the underlying tissues to become damaged [http://www.dentalgentlecare.com/cancer_sores_copy(1).htm] .
Ingredients such as
baking soda, enzymes, vitamins, herbs, calcium, calcium sodium phosphosilicate, mouthwash, and/or hydrogen peroxideare often combined into base mixes and marketed as being beneficial. Some manufacturers add antibacterial agents, for example triclosanor zinc chloride, to prevent gingivitis. Triclosan is a common ingredient in the UK.
Toothpaste comes in a variety of colorings, and
flavors. The more usual flavorings are some variation on mint ( spearmint, peppermint, regular mint, etc). Other more exotic flavors include: anise, apricot, bubblegum, cinnamon, fennel, neem, ginger, vanilla, lemon, orange, pine. More unusual are flavors include peanut butter, iced tea, and even whisky. Unflavored toothpaste does exist, however, most are flavored and sweetened. Because sugarpromotes growth of bacteria that cause tooth decay, artificial sweeteners are generally used instead. The inclusion of sweet-tasting but toxic diethylene glycolin Chinese-made toothpaste led to a multi-nation and multi-brand toothpaste recall in 2007.
With the exception of toothpaste intended to be used on pets such as dogs and cats, and toothpaste used by
astronauts, most toothpaste is not intended to be swallowed, and doing so may cause nauseaor diarrhea; fluoride toothpaste is toxic when swallowed.Fact|date=August 2008 If a large amount of toothpaste is swallowed, Poison Control should be contacted immediately.Fact|date=August 2008 Extended consumption while the teeth are forming can result in fluorosis. This is why young children should not use fluoride toothpaste except under close supervision. There are several non-fluoride toothpaste options available in the market for those with no tolerance to fluoride. Natural toothpaste can contain peppermint oil, myrrh, plant extract(strawberry extract), special oils and cleansing agents.
Striping of toothpaste is solely for the purpose of providing an alternative appearance; it provides no functional benefit to the consumer.
Striped toothpaste can be produced by including two different colored toothpastes in an unusual type of packaging. The collapsible
tubehas two tanks, one filled with each color paste (see figure). Squeezing the tube pushes the two pastes out the opening. The tube nozzle layers the pastes to produce a striped pattern. As the tube is squeezed, the stripes flow parallel to each other and do not mix. The patterned paste that gets dispensed is simply a narrower version of what is in the tube. Filling is done using a multi-nozzle filling head that dispenses a different colored stripe in each direction. To keep the stripes parallel to the axis of the tube, the head starts at the bottom and retracts as it fills, staying just above the level of the paste. Tubes with two compartments are generally reserved for toothpastes containing two formulas intended to react together and therefore kept isolated until dispensed (e.g. Colgate Simply White). To keep the cost of packaging to a minimum, it is now common for tubes to be filled with striped paste (e.g. Aquafresh). [http://www.aquafresh.com]
Sodium dodecyl sulfate
List of toothpaste brands
* [http://www.fluoride-history.de/p-dentifrice.htm Fluoride toothpaste history]
* [http://dentist.stomatoloq.com/2007/11/04/black-toothpaste-and-black-toothbrush/ Black toothpaste]
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Look at other dictionaries:
toothpaste — (n.) 1832, from TOOTH (Cf. tooth) + PASTE (Cf. paste) (n.) … Etymology dictionary
toothpaste — ► NOUN ▪ a paste used on a brush for cleaning the teeth … English terms dictionary
toothpaste — [to͞oth′pāst΄] n. a paste used in cleaning the teeth with a toothbrush … English World dictionary
toothpaste — UK [ˈtuːθˌpeɪst] / US [ˈtuθˌpeɪst] noun [countable/uncountable] Word forms toothpaste : singular toothpaste plural toothpastes a soft thick substance that you put on a toothbrush to clean your teeth a tube of toothpaste … English dictionary
toothpaste — tooth|paste [ˈtu:θpeıst] n [U] ↑toothpaste a thick substance that you use to clean your teeth … Dictionary of contemporary English
toothpaste — [[t]tu͟ːθpeɪst[/t]] toothpastes N MASS Toothpaste is a thick substance which you put on your toothbrush and use to clean your teeth … English dictionary
toothpaste — dantų pasta statusas Aprobuotas sritis farmacinės formos apibrėžtis Puskietis dažniausiai daugiadozis hidrofilinės pastos preparatas dantims trinti. atitikmenys: angl. toothpaste vok. Zahnpaste pranc. pâte dentifrice šaltinis European Directorate … Lithuanian dictionary (lietuvių žodynas)
toothpaste — noun Date: 1832 a paste for cleaning the teeth … New Collegiate Dictionary
toothpaste — /toohth payst /, n. a dentifrice in the form of paste. [1825 35, Amer.; TOOTH + PASTE] * * * … Universalium
toothpaste — noun A paste, normally used with a toothbrush, for cleaning the teeth … Wiktionary