Gums love this toothbrush: thanks to its 5,460 CUREN filaments. A CS 5460 ultra soft toothbrush offers unparalleled gentleness to gums yet is unbelievably effective at removing plaque, leaving you with a uniquely clean feeling each and every brush. So why not try it today, your gums really will love you for it. 5,460 CUREN filaments, 0.1 mm in diameter. Toothbrush. ExpirationThis product has no expiration date or the manufacturer has not provided an expiration date.