Without fail, I brush my teeth twice a day. I have sensitivity in a couple of teeth, so use a toothpaste that helps ease the symptoms. I have found it really helps, after thinking perhaps that these toothpastes were just a gimmick, and expensive. I floss twice daily, and after eating foods that get stuck, with expanding dental floss, as I can see what I've used, but it's also gentler than the plastic tape or normal floss.
I use mouthwash twice daily, and also if I need to freshen my mouth after eating.
I also used inter-dental brushes, my dentist told me they are great at getting into the crevices at the very back of the mouth, where a normal size toothbrush can't reach. I change my toothbrush as soon as the bristles start to splay out. I never miss my twice yearly check ups at the dentist, problems can be spotted earlier and dealt with. My advice to my younger self would be don't be scared of going to your appointments, and don't leave it for 10 years like I did! Luckily my teeth didn't suffer as they are strong, but I may not have been so lucky, and could have ended up with a mouthful of falsies!