Do you know the life cycle (周期) of teeth in your mouth?Children below age 6 have 20baby teeth. From ages 6 to 13, people lose their baby teeth one by one. Then permanent teeth(恒牙)56.begain to grow. Between the ages of 17 to 25, some people grow wisdom teeth(智齿). Of ...
六选五Do you know the life cycle (周期) of teeth in your mouth? Or do you know anything about teeth?You may never think about it before. 1Children below age 6 have 20 baby teeth. 2 Then permanent teeth (恒牙) start to grow.Between the ages of 17 to 25, some people grow wisdom ...
1.any of the hard, bone-like objects that grow in the mouth and are used for biting and chewing.He has had a tooth out at the dentist's.diente 2.something that looks or acts like a tooth.the teeth of a comb/saw.diente teethe(tiːð)verb ...
supporting the teeth现在分词短语作定语，修饰the bone.Keep your mouth healthy. When you brush your ...
What do I need to know about healthy teeth and gums in young children?You can help your child develop good habits early that will continue as an adult. Healthy teeth and gums start even before your child gets his or her first tooth. Your child needs good nutrition and mouth care starting...
You have lots of teeth in your mouth. They biteo food. Then chew a it. Your teeth are small. They are called “baby teeth”.Soon you get older. You will grow bigger. You will need bigger teeth. So your baby teeth will fall out. Bigger teeth will grow in your mouth. They will ...
Teeth You have lots of teeth in your mouth. They bite food. Then chewe it. Your teeth are small. They are called “baby teeth".Soon you get older. You will grow bigger. You will need bigger teeth. So your baby teeth will fall out. Bigger teeth will grow in your mouth. They will...
Question 11/14 All bacteria are bad for the health of your teeth and gums. True FalseQuestion 12/14 Most bacteria in your mouth live in plaque. True FalseQuestion 13/14 Bacteria in your mouth can cause tooth decay by: Eating tooth enamel Releasing acids that weaken tooth enamel Releasing ...
Saliva helps clean teeth and protects your mouth from decay. But as you get older, your mouth gets drier and your odds of tooth decay go up. Your medication could be to blame. Lots of drugs dry you out. To fight back, drink more water. Hold it in your mouth for a few seconds befo...
How much do you know about the teeth in your mouth?Children under 6 years old have 20 baby teeth. From 6 to 13, they lose their baby teeth one by one. After that, permanent teeth(恒牙) begin to come out. People usually have 28 to 32 permanent teeth. Between 17 and25,some people ...