Floss til your gums bleed tbh fam. One strand might not do it if you floss even regularly. Maybe not even two. Some tripled up teflon tape flossing action is the trick. Get in there til your gums are cut up
I haven't Shakira'd this hard since I 1260'd on my snowboard in the halfpip at the '09 X-Games with a few snow bunnies in the cut on deck for the North Shore smashfest