All twenty baby (or primary) teeth come in by the time your child is two or three years old.
Primary Teeth This chart tells you when baby teeth come in (or erupt) in most children. Chart of Primary Teeth If your child is getting his or her teeth and seems to be in pain, you can:
Rub the gums with a clean finger, or Rub the gums with the back of a small, cool spoon. If your child is still unhappy, your dentist, pharmacist or doctor can suggest an over-the-counter medicine to ease the pain.