http://www.youtube.com/watch?v=ymCpnNyrmRY http://www.newsobserver.com/2014/04/28/3818904/apex-inventor-entrepreneur-is.html …Steven Walther…has re-invented the toothbrush. …designed to be held by two fingers… …the gum lines and teeth enamel people could save by holding their brush with two fingers instead of a fist.
