i found this on the net abt toothpaste for babies/children
Children under 2 years of age
* Fluoride toothpaste is not recommended for children under two years of age.
* Generally young children receive enough fluoride to benefit their teeth through food and water.
* From birth to two years of age the permanent front teeth are developing and if children swallow fluoride toothpaste they may get white flecks on their permanent adult teeth.
* To avoid this, fluoride toothpaste should not be used when brushing teeth and should be kept out of children's reach.
* However, if you live in an area which does not have fluoridated water, you could start using a low fluoride toothpaste when your child is about 18 months old, if your dental professional advises you to do this.
Children 2-6 years of age
* Low fluoride toothpaste is recommended for children 2-6 years to prevent dental disease.
* Research shows that children 2-6 years swallow a lot of toothpaste when brushing their teeth. Therefore, it is recommended that they use a low-fluoride toothpaste such as Colegate my first toothpaste**, Macleans milkteeth** or Oral B children's toothpaste**.
* Use a smear of low-fluoride toothpaste twice a day, in the morning and last thing before bed at night.
* Toothpaste tubes should be kept out of children's reach and toothpaste put on the brush by an adult to avoid accidental swallowing of large amounts.