①Smile! A smile is the most fascinating part of your face. But sometimes you don't want to smile. Why? Because your teeth are crooked (不整齐的)? Have you seen some kids with a mouthful of metal? These are called braces. Today, doctors can work wonders with your teeth. Just as you go to a doctor with an upset stomach or an eye doctor to test your eyes, your teeth also needs attention and care.
②Teeth help in eating. Crooked teeth will not allow you to chew food properly, so some unchewed food will go down to your stomach. Besides, crooked teeth are difficult to clean and hurt the gums (牙龈). Space between the teeth is also dangerous. Sometimes food get stuck between the teeth. If you do not take it out with a normal brushing, they may do great harm to the teeth.
③The best time to solve the problem is when you are a child and your teeth haven't completely set. It may be from 8 to 14 years of age. By 12 or 13 years of age or so, the milk teeth falls out and permanent teeth come in. It is also at this age that the jaw (下巴) is growing. As a child is growing, his jaws is still weak and reshaping is easier.
④The dentist corrects the teeth by spreading your mouth with braces so that the teeth fit in correctly in its place. Putting pressure to the jaw makes the jaw grow in the direction of the pull.Putting braces helps change the shape of your jaw.
⑤Teeth can be corrected at any age. However, as you get older it takes longer time and hurts more. The older you are, the more painful it gets as the jaws and permanent teeth have set.