Spry sponge xylitol dental flos is strong and flexible sponge floss coated with beneficial xylitol it allows the floss to be drawn between the teeth and gums and coat with xylitol in places where brushing cannot reach the sponge floss expands on contact and is therefore ideal for those tight areas or for those wearing dental implants and bridges where the expanded floss can be gently eased through without pulling because of its natural properties xylitol is a unique sweetener which p