Hey, Rainbow Dash, flossing is important!
Maybe if you floss enough, your wings will grow back!

Hey, that flossing thing is no joke. I had to get 11 cavities filled over 6 appointments. Even though I brushed regularly I still got cavities between my teeth, so it affected both teeth. So, unless you enjoy having half your face numbed, I suggest flossing regularly. Though, I'd imagine flossing is really difficult for a pony. Y'know, hooves.