The research on the topic is wanting, I guess because there's not much money in arguing about it and it's a pretty low-risk intervention. There was a spate of

The research on the topic is wanting, I guess because there's not much money in arguing about it and it's a pretty low-risk intervention. There was a spate of "flossing is useless!" articles a while ago but my takeaway was that it's more that it can't be shown definitively to be useful, which is a different thing. As I recall, some studies showed that home flossing didn't seem to have much of an effect, but other studies showed that professionals flossing did improve dental health, so it seems just as possible that we could chalk it up to selection factors or poor technique. If you want a strong study that definitively shows that flossing is effective, though, you won't find it, really.