Well I’m convinced that you’re on of those people that doesn’t get any plague, or maybe a dentist from the 1950s. That’s just not true for most people.

“US government does something since 2016” probably equals Trump gutted something important, hell even the US’s CDC has been defunded.

Nope, not even with an electric one. It doesn’t get into the areas between the teeth at all if you’re using it at intended pressures.

It definitely at least stops plaque from forming, which otherwise irritates the gums so they eventually recede. Some people somehow just don’t get plaque for some reason so in that case it’s maybe pointless, but most people do.

It is funny though how dentists still feel closer to some kind of village shaman. Each performing their weird rituals, absolutely convinced that they’re correct and all others are clearly wrong. Probably because they’re not actual doctors and also happen to have a horrible monetary conflict of interest to let people have terrible teeth.