I've wondered if you could make something to floss multiple teeth at once. Maybe something that fits over a span of teeth such as all the top teeth and is custom fitted so that it fits on the same way each time. It would have holes that you can thread floss through so that when you put it on the floss ends up between the teeth. Then you can pull on the ends of the floss and it flosses between all the teeth that the device is covering.
You don’t want the floss just moving in and out between the teeth. The point of floss is to scrub the inside face of each tooth. So when the floss is between 2 teeth you want to press it against first one tooth and move it up and down several times and then press it up against the other tooth and do the same thing.
There’s really no way to do that to multiple teeth at once without something much much more complicated.
