The act of brushing your teeth with excessive pressure is not only bad for your teeth but can also be harmful to your health. (This can cause damage to the enamel, which is intended to safeguard your teeth and allow bacteria to feed on the enamel of your teeth.) It is harmful to your toothbrush too. When you exert lots of tension on your brush, this causes the bristles to twist and turn out to be distorted.
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