We get one set of bones, organs, eyes and hands that all develop and age with us as we grow older. However, the same cannot be said for our teeth. Our teeth go through an interesting and dramatically different lifecycle, from the first signs of teething, to permanent teeth developing, the pain of wisdom teeth and eventually tooth decay. While newborns do not have any teeth, their front teeth are already fully formed. Teeth start forming just 6 weeks after conception, when they begin to grow down into the developing jaw.
These teeth start to come through when a baby reaches around months old, and most children have a full set of 20 milk teeth by the time they are 3. As teeth develop, they take on many shades. When kids reach around 5 or 6, their jaws are strong enough to support permanent teeth, and so baby teeth start to fall out and visits from the Tooth Fairy begin. Developing permanent teeth eventually put enough pressure on the roots of the baby teeth, which causes them to break.
By the time to tooth falls out, most of the root has already been reabsorbed into the gums. Their new adult tooth could appear in as soon as a week, or as long as six months. This overcrowding can cause wisdom teeth to be impacted — or stuck — between the jawbone and the other set of molars.
Lateral incisors are beside lateral to the central incisors. Next, the 4 first molars come in. Often, after the child reaches 2 years old, the 4 second molars the last of the baby teeth appear. The teeth on the upper jaw often erupt 1 to 2 months after the same tooth on the lower jaw. There are a total of 20 primary teeth.
Often, about 1 tooth comes in per month once the teeth start coming in. There is normally a space between all the baby teeth. This leaves room for the larger permanent teeth to erupt.
The eruption sequence can vary quite a bit from child to child. So don't be too concerned if your child's teeth don't follow the pattern above. But if teeth fail to come in a year after the expected time, check with your child's dentist.
He or she can to make sure the teeth are developing properly. Below is a chart showing average ages when teeth come in and fall out are shed :. Should you be worried? Not necessarily. In some cases, the failure of a permanent tooth to erupt can signal a problem. To provide a few examples:.
Typically, when a permanent tooth begins erupting, it pushes against the roots of the primary tooth it is going to replace. This causes the roots of the primary tooth to dissolve, resulting in a baby tooth that becomes loose and eventually falls out. However, this process does not always work correctly.
When an erupting permanent tooth does not properly push against the roots of the corresponding primary tooth, the permanent tooth can grow in without the primary tooth becoming loose. Parents often wonder whether children with shark teeth require any form of treatment. The answer depends on a wide variety of factors. For example, is the over-retained primary tooth impeding proper brushing? Is it causing pain or discomfort? In many cases, no treatment is necessary and the baby tooth will eventually fall out on its own.
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