The common rule-of-thumb is that it should take roughly 2 minutes to properly brush one’s teeth, which pertains to using some elbow grease with a manual toothbrush to the convenience of electric toothbrushes. Now, the Unico, a “smartbrush mouthpiece” as its creators call it, claims that it will clean your teeth in only three seconds. Yes, THREE SECONDS; that’s 2.5% of the old rule-of-thumb’s time!! This sounds like it’s straight out of science fiction!!