Piksters Gorilla Floss Chairside is Almost unbreakable on any type of contact point, Try it on your roughest, sharpest, tightest contacts! Easier to insert with less force (and risk of tissue trauma) even on sharp or rough contacts! Made from superfine multi-filaments that produce a "scrubbing" action. Superb strength and break resistance, even on corroded amalgam contacts or sharp edges! Much stronger than Nylon. Great for implants - Won't shred or fray as much, with fewer fibers at fixture/abutment crevice.