Teeth (singular tooth ) are small, calcified , whitish structures found in the jaws (or mouths) of many vertebrates that are used to break down food . Some animals, particularly carnivores , also use teeth for hunting or for defensive purposes. The roots of teeth are covered by gums . Teeth are not made of bone, but rather of multiple tissues of varying density and hardness. 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 and grinding. Carnivores , on the other hand, need canines to kill prey and to 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, which helps maintain relatively constant length. The industry of the beaver is due in part to this qualification. Many rodents such as voles (but not mice ) and guinea pigs , as well as leporidae like rabbits , have continuously growing molars in addition to incisors.
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Premium Questions (428)
my teath become yelowish very often, i smoke a little 1 or 2 sticks a day , brush once a day. please suggest wht to do , i dont want to teeth enamling it destry the teeth calciam layers, please suggest other way out
hello my name is iaian
I have been suffering from constant sensation of decay and
sometimes septic sensation, I am always sickly and lethargic.
this has been going on for years, i believe my father was sick
because of his teeth...
Have been taking antibotics for the last week for a tooth abcess was constapated after getting my tooth taken out the morning i have had boweel movements 3 times this mornning 1 was diorria
2-3 days with severe pain from a red bump right in the middle of my palate, towards my front teeth?
I have serious pains in the rugae section of my mouth behind my top teeth in the ridge section, it's sensitive to the touch. Whenever I touch it with my tongue or eat something I feel the pain and sensitivity. It has been 3 days and I'm waiting...
I have 2 lumps on either side of my jawline from two abcess. I have also felt a small one on my left collarbone. My head feels strange and have a kind of bubble senstaion. Is it from the tooth abcess or domehting more?
Hi im a 17 year old male and the other day i recieved oral sex for the first time but it was painful because her teeth were scraping against my penis. when i got home the next day i noticed that i had a scar line that was red and a bit indented...
my 17 months old baby has pus on his gums since last 5 days .. doctor gave some anibiotics but the pus is shifting from one tooth to other.. he has 4 teeth ..
My nearly year old son is vomiting everything he eats and drinks and has dirrahea and is also teething. This is the second day now. Please advise as to cause?He has undescended testicles to which I am seeing the...
Hi Doctor,
Sorry for a lame question. But I haven't been to dentist for 20 years and never to filling before, the idea of going to Dentist always scares me.
I heard about this needle less injection for the gum...
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Online Doctor Chat (354) - Tooth
Doctor : hi
Doctor :
How can i help You?
User : namaskaram doctor garu i am XXXXXX 25 yrs male from cuddapah
Doctor :
ok
User : i have problem in front teeth doctor garu
Doctor :
ok
User : i smoke sir
Doctor :
ok
User : and in...
Doctor : Hi
Doctor : How can I help you?
User : Hi. good morning
Doctor : Morning
User : sorry to bother you on a wekend
Doctor : Not a problem, we're 7 days 9am-9pm on....
User : doctor. i am having a tingling sensation in my...
Doctor : Hi.
How can i help you ?
User : my boyfriend has a swollen jaw inside his mouth and it s bump and it gotten bigger in the past 3 days
User : do u hafe any idea what it could be?
Doctor : is it only in the mouth
Doctor : is it...
User : I have been biten by a dog. The skin isnt broken apart from one tooth mark which has left the skin like its nearly bleeding (but its not bleeding) it is also so and the area is swollen. Was wearing jeans at the time
Doctor : hello
User :...
Doctor : hI.
User : Hello
Doctor : How can I help you?
User : Myself, 25 years old
Doctor : Hi.
User : My teeth's are tuned to yellowish since last 1 month, what could be reason for this?
Doctor : Ok.
Doctor : Is there any bad breath or...
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Public Forum (1797) - Tooth
7 Answers
My teeth is slightly discolored. i saw in television that many chewing gums make the teeth white. Is this is good to use. Will they make my teeth white?
6 Answers
Iam smking from 5 years. I also have lot of tea and coffee alos. As a result of this iam having brown coloration of my teeth . Iam brushing 2 times a day. But still it is there.
1 Answer
Im writing for my brother here. One day he returned from his aunties, and sat on the computer for three hours. He turns it off, walks into his bedroom, gets changed, brushes his teeth , lies in bed, reads a book for an hour. His heart quickly beatens, over 140 per minute, possibly more. It looked like a cartoon, you could see it, beaten, it was...
2 Answers
hi Sir i m a 21 years old boy in my chicks two big spots just round its not take a right positions plz tell me plz tell me any medicene r cream
2 Answers
Hello, this stupid habit of chewing gutka has never left me since 10 years. i recently did a cleaning, but not able to come out of this habbit. the stains are back on my teeths, it is so embarassing to talk to people or even smile before them. please advise
17 Answers
is there any treatment for a half broken front teeth to make equal with other teeth?
13 Answers
I am 17 and when my baby lateral incisors came out, i never received my adult lateral incisors. I have had a brace and my teeth are straight however as the teeth 3rd from the middle have been moved into where my lateral incisors should be i wanted to know what there is i can do to make them look like normal lateral incisors rather than fangs. It...
1 Answer
I have hair whitening and falling problem please advise me( my age 32)
15 Answers
taking bendryl--heard that this medicine effects your teeth
6 Answers
doctor i am a heavy user of chewing tobbaco & past few months i have a cavity in teeth & also a white patches inside the mouth , pls advise, age 35 yrs. also daily heavy drink of alchohal approx 360ml doctor i am a heavy user of chewing tobbaco & past few months i have a cavity in teeth & also a white patches inside the mouth , pls advise, age...
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