To show how much sugar stays on our teeth after we eat, we chewed on special disclosing tablets. These tablets stain the sugar on our teeth purple, so we can see exactly where this invisble layer of sugar/plaque is.
We had to brush for AGES (well, around 3 minutes) to remove all the purple stains. We were really surprised by this. It taught us all that we really need to brush our teeth for a lot longer to get rid of this layer of sugar.
This will help our teeth to stay nice and clean and it will stop them from decaying as we get older.
*No children were harmed in this experiment! :)
