Philips Sonicare HX9054 / 33 spare heads 4 pcsPhilips Sonicare G3 Brush Heads Premium Gum Care is the best choice for healthier gums. The heads must be replaced at prescribed intervals, both to maintain full functionality and for hygienic reasons. Ideally, replace the warhead every three months. You will also be reminded of the need to replace the special blue fibers , which turn white when overly worn. The head, thanks to the elastic sides and fibers, protects your gums even during more