Swallowing fluoride toothpaste can lead to fluorosis, which interferes with the development of tooth enamel and can result in white streaks on the teeth, and gastrointestinal problems if the amount is large enough.

Is fluoride necessary in toothpaste?

while most people grow up thinking their toothpaste must have fluoride to be effective, it turns out that it's not absolutely essential for whitening or cleaning your teeth.

Why is fluoride free toothpaste better?

If you use toothpaste without fluoride, your teeth will be left unprotected from bacteria. Fluoride interferes with the bacteria acid left on your teeth and reduces demineralisation. It also acts as an antibacterial.