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国防教育手抄报Wisdom teeth
Wisdom teeth are normally the last teeth to appear. This usually happens when people are in their late teen years or early twenties -- in other words, when they are older and wir.
拘谨的拼音 Wisdom teeth are molars, or chewing teeth, at the back of the mouth. The third t of molars, if you have them, are your wisdom teeth.
They can grow into place normally and never cau a problem. But often there is not enough room for them in the mouth. They might crowd other teeth. Sometimes they even push sideways through the gums.
An impacted wisdom tooth is one that fails to completely ri through the gums -- the term is erupt. Wisdom teeth that only partially erupt can leave space for bacteria to enter around the tooth. Infection is a risk in the cas.
Wisdom teeth that are not well aligned and become impacted are often removed.
A dentist in Chicago works on the teeth of one of her patients.
People should have the placement of their wisdom teeth examined between the ages of sixteen and twenty. X-rays can show wisdom teeth that are below the gums.
The American Dental Association says removal is generally advid when wisdom teeth only partly break through the gums. Removal is also advid if there is a chance that poorly aligned wisdom teeth will damage other teeth. And removal is called for in cas where fluid collects around a wisdom tooth that is partly or fully below the gum.
小学生语文
But why do we have wisdom teeth if we often need to get them removed? One theory has to do with our diets. Scientists say the diet of prehistoric humans probably required more chewing teeth. Life was probably a little rougher on the tee
th back then, too. So it was good to have extras.
站立式起跑教案
The removal of wisdom teeth is performed by oral surgeons. They say if removal is advid, the best time to do it is before the teeth cau any problems or pain.
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