Why can brushing your teeth too hard damage them, but the sharp metal points dentists use to scrape enamel off don’t?
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for starters we dont dig in with the points, we use the side of the edge. Also tooth enamel is about as hard as surgical steel. proper technique 2-4 x a year will remove mineralized calculus and plaque without harming the teeth.
I was been told by a hygienist that the reason for fluoride treatment during the visit is specifically to repair or mitigate the damage done by their scraping tools.
The tooth is harder than both that dental pick and a bristle of the tooth brush. So it neither are “scratching” your teeth. Instead it’s the wear that comes with pressure, movement, and time. You brush every night, with too much pressure, then your tooth will wear down like the stone steps of an old building. You do brushing more often with more points of contact, usually with more pressure than what the dentist uses.
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