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Teeth (singular, Tooth) are small whitish structures found in the jaws (or mouths) of many vertebrates that are used to tear, scrape, milk and chew food. Some animals, particularly carnivores, also use teeth for hunting or defense. The roots of teeth are covered by gums. The teeth however, are not made of bone.

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Wikipedia about Tooth

Teeth (singular, Tooth) are small whitish structures found in the jaws (or mouths) of many vertebrates that are used to tear, scrape, milk and chew food. Some animals, particularly carnivores, also use teeth for hunting or defense. The roots of teeth are covered by gums. The teeth however, are not made of bone.

Teeth are among the most distinctive (and long-lasting) features of mammal species. Paleontologists use teeth to identify fossil species and determine their relationships. The shape of the animal's teeth are related to its diet. For example, plant matter is hard to digest, so herbivores have many molars for chewing. Carnivores, on the other hand, need canines to kill and tear meat.

Mammals are diphyodont, meaning that they develop two sets of teeth. In humans, the first set (the "baby," "milk," "primary" or "deciduous" set) normally starts to appear at about six months of age, although some babies are born with one or more visible teeth, known as Neonatal teeth. Normal tooth eruption at about six months is known as teething and can be painful.

Some animals develop only one set of teeth (monophyodont) while others develop many sets (polyphyodont). Sharks, for example, grow a new set of teeth every two weeks to replace worn teeth. Rodent incisors grow and wear away continually through gnawing, maintaining relatively constant length. Many rodents, such as the sibling vole and the guinea pig , have continuously growing molars in addition to incisors.

Anatomy

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main: Dental anatomy

The bottom teeth are used more for the grinding of food and the top front teeth are mainly used for biting.

Dental anatomy is a field of anatomy dedicated to the study of tooth structures. The development, appearance, and classification of teeth fall within its field of study, though dental occlusion, or contact among teeth, does not. Dental anatomy is also a taxonomical science as it is concerned with the naming of teeth and their structures. This information serves a practical purpose for dentists, enabling them to easily identify teeth and structures during treatment.

The anatomic crown of a tooth is the area covered in enamel above the cementoenamel junction (CEJ).Ash, Major M. and Stanley J. Nelson, 2003. Wheeler's Dental Anatomy, Physiology, and Occlusion. 8th edition. Page 6. ISBN 0-7216-9382-2. The majority of the crown is composed of dentin with the pulp chamber in the center.Cate, A.R. Ten. Oral Histology: development, structure, and function. 5th ed. 1998. Page 3. ISBN 0-8151-2952-1. The crown is within bone before eruption.Ash, Major M. and Stanley J. Nelson, 2003. Wheeler's Dental Anatomy, Physiology, and Occlusion. 8th edition. Page 9. ISBN 0-7216-9382-2. After eruption, it is almost always visible. The anatomic root is found below the cementoenamel junction and is covered with cementum. As with the crown, dentin composes most of the root, which normally have pulp canals. A tooth may have multiple roots or just one root. Canines and most premolars, except for maxillary (upper) first premolars, usually have one root. Maxillary first premolars and mandibular molars usually have two roots. Maxillary molars usually have three roots. Additional roots are referred to as supernumerary roots.

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Tooth.net Dental Education Site

Tooth Development. Plaque Control. Tooth Decay. Periodontitis. Cosmetic Dentistry. Wisdom Teeth ... topics related to tooth decay, cosmetic dentistry, fillings, ...www.tooth.net/

tooth: Definition from Answers.com

(Click to enlarge) tooth (Carlyn Iverson) tooth n. , pl. teeth. ... projecting part resembling a tooth in shape or function, ... Sci-Tech Encyclopedia: Tooth ...www.answers.com/topic/tooth

Toothache – Explanation regarding the many causes of this common ...

Complete explanation of a toothache including the many dental and non-dental causes - dental cavities, dental abscess, gum disease, irritation of the tooth root, ...www.medicinenet.com/toothache/article.htm

Toothaches: Symptoms, Causes and Treatment – WebMD

A toothache is pain in or around a tooth that may be caused by a number of dental problems. ... You Have That Wisdom Tooth Removed? Cosmetic Dentistry: Before ...www.webmd.com/oral-health/toothaches

Tooth Abscess | AHealthyMe.com

aHealthyme.com provides information on health and wellness, along with daily health news, full-text journal and magazine articles, personalized newsletters and ...www.ahealthyme.com/topic/abscess

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News about Tooth

Tooth snags televangelist's talk

The News JournalJuanita Bynum, who's been called "the Oprah Winfrey of televangelism," did not appear at Wilmington's Tabernacle Full Gospel Baptist Cathedral on Wednesday because officials at the church said she had a root canal and it produced an abscessed tooth.http://www.delawareonline.com/article/20081002/NEWS/81002037...

Big fossil found in paleontologist's yard post-Ike

AP via Yahoo! News A paleontologist whose beachfront home in Texas was destroyed during Hurricane Ike has found a football-size tooth in the debris.http://news.yahoo.com/s/ap/20081003/ap_on_fe_st/odd_ike_big_...

Hot Flashes - Banking On The Tooth Fairy

The Prairie AdvocateIncome from the tooth fairy was my last financial windfall. It was a whole quarter, shiny and solid found beneath my pillow one Sunday morning in the second grade. That year, with my extra quarter in my piggy bank, my school picture looked like a jagged-tooth wolf in pigtails.http://www.prairie-advocate-news.com/10-1-08/sue10_1_08.html

NY judge: Broken-tooth popcorn suit's a dud

AP via Yahoo! News Movie munchers beware! A New York judge says popcorn purchasers worried about breaking a tooth on unpopped kernels should nibble carefully — or eat something else.http://news.yahoo.com/s/ap/20080929/ap_on_fe_st/odd_unpopped...

Tooth camp

Daily MirrorEXCLUSIVE COWELL GETS FINALISTS WHITENING TREATMENThttp://www.mirror.co.uk/news/top-stories/2008/10/02/tooth-ca...

News about Tooth

Designer teeth create headaches

ScoopFor instance, excessive pressure on a tooth may lead to the tooth dying but it’s a process that could take up to eight months to declare itself. “Dental reconstruction is now a highly sophisticated industry. We increasingly face patients with ... http://www.scoop.co.nz/stories/GE0810/S00060.htm

Ike Hurricane Exposes Mammoth Tooth

SoftpediaAfter Hurricane Ike destroyed her house on the beach in Caplen, on the ravaged Bolivar Peninsula in Texas, paleontologist Dorothy Sisk discovered the fossilized remains of a mammoth tooth. Soon after the disaster, Dorothy Sisk asked her colleague ... http://news.softpedia.com/news/Ike-Hurricane-Exposed-Mammoth...

Six-pound tooth found near Ike-ravaged home

News-HeraldA homeowner whose beachfront property in Texas was destroyed during Hurricane Ike has found a football-size fossil tooth in the debris. Dorothy Sisk and her colleague, Lamar University paleontologist Jim Westgate, visited her Bolivar Peninsula home ... http://www.portclintonnewsherald.com/apps/pbcs.dll/article?A...

The whole tooth

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Medicaid Enrolled Children Have More Untreated Tooth Decay

eMaxHealth.comChildren covered under Medicaid receive considerably less dental care and have more untreated tooth decay than those who are privately insured, witnesses testified during a recent hearing held by the House Oversight and Government Reform Domestic ... http://www.emaxhealth.com/2/50/25212/medicaid-enrolled-child...

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The Tooth Fairy

The FIRST Tooth Fairy online, with dental hygiene tips, dental hygiene links and the going price of a baby tooth!http://www.toothfairy.org/

Mooses Tooth Intro Page

B E A R T O O T H G R I L L . Now Open 4 PM - 11:30 PM Daily. Special Events & Live Music . Online Ticketing is available for live music eventshttp://www.beartooththeatre.net/

Tooth Fairy Land

Free Letter from Tooth Fairy, Tooth Fairy Gift Package, Official Tooth Fairy.http://www.toothfairyland.com/

Bear Tooth

Movie listings, hours of operation, and additional information are available at 276-4200. 1230 West 27th. Off of Spenard Movies now availablehttp://www.beartooththeatre.net/index2.html

Philmont's Trading Post, Tooth of Time Traders, Cimarron NM

Philmont Scout Ranch's Official Trading Post Web Site. Philmont Memorabilia and Gear for your trek in the Sangre de Christo Mountains of New Mexico.http://www.toothoftimetraders.com/philmont/
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Hellboy II The Golden Army - Tooth ...

Hellboy II The Golden Army - Tooth FairiesThe tooth fairies attack.Flash - Video

Daniel Flynn Loses Tooth

Daniel Flynn Loses ToothNew Zealand Batsman Daniel Flynn loses a tooth after being hit by a bouncer from Jimmy Anderson.Flash - Video

Health Watch: Tooth Crowns

Health Watch: Tooth CrownsSometimes you have to go to the dentist multiple times to replace a tooth. Dr. Max Gomez is here to tell us about a new way that can make it all happen in just one sitting.Windows Media - Video

Tooth Tunes

Tooth TunesTooth Tunes is the only toothbrush that transmits music through your head while you brush. No kidding!Flash - Video

Finding A Mako Fossil Shark Tooth O...

Finding A Mako Fossil Shark Tooth Off Of Venice FloridaFinding an extinct mako tooth, ancestor of the great white.Flash - Video

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Answers for Tooth

×†× TØñÿ ׆×

What is the best and healthiest way to whiten your teeth without hurting your tooth enamel?

×†× TØñÿ ׆×There is no best way to whiten teeth its chemicals your putting on. Use a whitening toothpaste on a daily basis like crest and try the crest white strips they really work but be careful your teeth wil...
ALISHLOP

what's the difference between having a wisdom tooth removed and any other teeth?

ALISHLOP
grymatta

How much would it cost to have my tooth capped?

grymattaYou need to get this attended to right away. When a piece of tooth comes off due to decay it means the decay is pretty serious. Your doc can just put in a bonded restoration to hold you if a crown is...
vbeaver31

What age do most kids loose their first tooth?

vbeaver31Absolutely within normal range. Most children who get their teeth early end up losing it earlier.
Vigie

How to tell the difference between Baby Tooth and Adult Tooth?

VigieYour dentist should def. be able to tell the difference between a primary tooth and an adult tooth. Depending on where it is located and what size it is in comparison to the other teeth. Some people...

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