Don’t tell the school teachers, but YES!
Two ways chewing gum can aid in the cleaning of teeth: 1) Gum actually mechanically cleans teeth as you chew, and 2) Gum acts to promote saliva which can decrease the bacteria, decrease acidity, and remineralize teeth.
So, let me back up – Bacteria in the mouth produces lactic acid which causes a demineralization (cavity) of enamel – and gum helps fight all three!