Whiter teeth after one week Apply the W2 Optimal White toothbrush head to remove surface discoloration and reveal a natural whiter smile. Clinical studies have shown that densely arranged, centrally placed hair provides bleaching effect after 1 week. Regardless of whether you want to remove the plaque or the extra polishing of teeth, we have a solution for you: the cleaning program allows perfect cleaning of teeth, and the bleaching program is ideal for removing discoloration. Safe and gentle brushing in sensitive places, orthodontic apparatus and fillings You can be sure that the use of the toothbrush is safe: our sonic technology is adapted for orthodontic cameras, fillings, crowns and varnish. It helps prevent the formation of caries and improves the health of the mouth. You may not notice that you brush too hard, but your electric toothbrush with a pressure sensor will definitely record it. If you press your gums too hard, the toothbrush will make a pulsating sound to remind you that you should brush gently. Connects handle to toothbrush head Philips Sonicare 4500 has a microchip with technology to detect and synchronize the head of a toothbrush with a handle. The handle and head of the toothbrush create a solution to generate intelligent reminders of the need for replacement. Replace the tip every three months to ensure the best results All the heads of the toothbrush wear out over time. But our BrushSync technology records how long you use the toothbrush head and how hard you brush. When the time comes to replace it, the pointer on the handle will light up and you will hear a short sound signal. This solution ensures that the head of the toothbrush is effective.