39 year old chad with not a single filling here. go to a dentist, get them to give your teeth a proper deep clean, then follow their instructions going forward; brush, floss, use intradental brushes every day. i use mouthwash too but i suspect it is meme tier and not really doing anything. (i almost never have time to brush teeth in the morning also, have to settle for chewing gum in the car on the way to work - once a day seems to be sufficient.)
United Kingdom