That and flossing everyday properly. Doesn't help that most people probably brush/floss their teeth the wrong way.
I eat a lot of meat though so my floss scrapes a lot of shit everyday.
i made a thing
This. Not gushing down a case of Soda a day definitely helps.
Most people's gums and teeth actually have something wrong with them because of our change of diet compared to our ancestors. Too much acid and sugar.