Teeth are wonderful! Let's learn about our teeth.
When babies are born, they have a set of 20 primary teeth, sometimes known as milk teeth which sit in their gums (牙床) waiting to grow. Around the age of six months, babies' first teeth are preparing to grow out of their gums. Children usually have all their baby teeth by the age of three. Then, at around the age of six, children's baby teeth are pushed out, ready for growing adult teeth. The final teeth which grow from the gums are the largest teeth in the human mouth. They are called wisdom teeth and are often not fully seen until a person reaches their late teens or early twenties! An adult usually has 32 teeth.
Looking after your teeth is an important part of keeping your body healthy and it should be a part of your habits in your everyday life. To keep your teeth healthy; the most important thing you can do is to brush them every day. Brushing your teeth twice a day for at least three minutes. Using toothpaste can better protect your teeth from bacteria and plaque (细菌和菌斑). Plague appears and builds up on your teeth when food is left on or between your teeth. It includes bacteria. So if it is not cleared up, it can cause a hole on your teeth or even teeth losing. Unless you brush your teeth every day, you will have to see a dentist. A dentist can give your teeth check-ups and make sure that your teeth are healthy.
①Primary teeth wait to grow. ②Adult teeth grow.
③First teeth grow out of gums. ④Baby teeth are pushed out.
