Sonicare Electric Toothbrush. My grandmother bought me my first one in the 90s. I’m on my third, and that’s only because I take them backpacking. It’s my 1 luxury item on the trail. I know much of it is genetics, but a morning and evening cleaning make my teeth feel amazing and have helped me stay cavity free.
Yeah, I lost the tooth genetics race. Brush twice a day, floss 3-4 times a day, still have cavities every visit to the dentist, and need a full on root canal and crown every few years.
Both of my parents have lost half of their adult teeth even though they take care of them, abstain from sugar and processed and/or acidic foods/drinks.