And teeth play an important role in your daily life. They not only let you eat stuff like apples, they also help you talk. So let's talk teeth! Unlike your heart or brain, your teeth weren't ready to work from the day you were born. Although babies have the beginnings of their first teeth even before they are born, teeth don't become visible until babies are about 6 to 12 months old. After that first tooth breaks through, more and more teeth begin to appear.
Most kids have their first set of teeth by the time they are 3 years old. These are called the primary teeth, baby teeth, or milk teeth and there are 20 in all. When a child gets to age 5 or 6, these teeth start falling out, one by one.
A primary tooth falls out because it is being pushed out of the way by the permanent tooth that is behind it. Slowly, the permanent teeth grow in and take the place of the primary teeth. By about age 12 or 13, most kids have lost all of their baby teeth and have a full set of permanent teeth. There are 32 permanent teeth in all — 12 more than the original set of baby teeth. Most people have four teeth called wisdom teeth grow in at the back of the mouth when they're between 17 and 25 years old.
These complete the adult set of 32 teeth. Let's take a tour of your teeth. Look in the mirror at your own teeth or check out a friend's smile. The part of the tooth you can see, which is not covered by the gum your gums are the pink, fleshy part , is called the crown. The crown of each tooth is covered with enamel say: ih-NAM-ul , which is very hard and often shiny.
Enamel is a very tough substance and it acts as a tooth's personal bodyguard. Enamel works as a barrier, protecting the inside parts of the tooth. If you were able to peel away the enamel, you would find dentin say: DEN-tin. In all, babies are expected to grow 20 teeth—10 top, and 10 bottom—in the first years of their lives. Starting around 6 years of age—usually in kindergarten or first grade—the process begins to reverse, and those little teeth come out in basically the same order they grew in.
The American Dental Association has produced this handy chart showing each baby tooth, when it comes in erupts and at what age it is usually lost shed.
Most children will lose their last baby teeth just before they enter their teen years, at 11 or 12 years old. The last permanent teeth to arrive , the wisdom teeth, can appear as late as 21, an age at which the child is expected to have accumulated some wisdom hence the name of the teeth.
This is perfectly normal and helps to create the space necessary for the larger permanent teeth to emerge. Babies who are teething tend to drool much more than normal. In some cases, the constant drooling may even cause a mild rash on the cheeks or chin. You may notice that your child will start to bite and chew on anything within reach as a way to massage their sore gums.
The gums may appear red and swollen and be tender to the touch. The American Academy of Pediatrics recommends gently massaging the gums or providing the child with a teething toy to chew on rather than using topical pain relievers that can be rinsed away within a few minutes.
It is common for teething babies to run a low-grade fever. Of course, even good-natured babies are likely to be cranky and fussy because of the discomfort. Even though your child will only have their primary teeth for a short time, they still require care. Proper dental care will ensure that your child has the healthy teeth necessary for speech development and good nutrition. Remember that each one of them needs your care, even baby teeth. There are some cases where the number of teeth varies, resulting from tooth loss, tooth agenesia, or having extra teeth.
So keep up with your oral hygiene no matter how many teeth you have. It'll help make sure your teeth stay healthy and happy.
This article is intended to promote understanding of and knowledge about general oral health topics. It is not intended to be a substitute for professional advice, diagnosis or treatment. Always seek the advice of your dentist or other qualified healthcare provider with any questions you may have regarding a medical condition or treatment.
Shop Now. Our Mission. Contact Us. United States US English. Submit an Idea. Brand Logo. All rights reserved. Terms Of Use.
Privacy Policy. About Our Ads. Children's Privacy Policy.
0コメント