Class IX

A hard yellow substance makes up most of our teeth. What is it called?
  1. Dentin
  2. Centium
  3. Enamel
  4. Crown
How old are we when we start to lose our baby teeth?
  1. 2 to 4 years
  2. 5 to 7 years
  3. 8 to 10 years
  4. 10 to 12 years
What is the part of the tooth that you can see?
  1. Dentin
  2. Centium
  3. Enamel
  4. Crown
What is pink and helps hold our teeth in place in our mouths?
  1. gums
  2. tongue
  3. cheeks
  4. lips
Which teeth do the most chewing?
  1. Front teeth
  2. Side teeth
  3. Back teeth
  4. they all chew the same.
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