Why can brushing your teeth too hard damage them, but the sharp metal points dentists use to scrape enamel off don’t?

Question

Why can brushing your teeth too hard damage them, but the sharp metal points dentists use to scrape enamel off don’t?

In: Other

Answer 1

The sharp metal points *can* damage your teeth, but you aren’t doing that every day. If your dentist was scraping your teeth in a full cleaning every day then it would be really hard on your tooth enamel and not a good idea. However when done only very occasionally by a trained dentist it is good.