I go to the dentist every 2 months. The effects of not flossing, vs flossing once a day, vs flossing twice a day are very noticeable. Though I was cautioned to not floss aggressively, as that will wear down the tooth enamel.
Go to 5 dentists you'll get 5 widely different diagnosis. I was supposed to get my wisdom teeth removed "very soon" or I'd suffer in the future, that was almost 20 years ago, never had a toothache, never had a cavity, never had any issues with my wisdom teeth
My dentist recommended pulling my wisdom teeth over 40 years ago. I still have them, and they are the healthiest teeth in my mouth. (I switched to another dentist.)
Another time the dentist wanted to put in a crown, I had him do a filling instead.
And so on. One needs to be a participant, not just do whatever the dentist says.
It's quite clear, though, that flossing fixes the obvious inflammation of the gums. At least in my mouth, it does.
