Philips Sonicare Generic Replacement Brush HeadDetails Now you can keep your teeth fresh and clean with these Generic Replacement Toothbrush Heads. They fit perfectly with Philips Sonicare toothbrush and the Sonicare technology helps remove up to two times more plaque; compared to a manual toothbrush. Dental professionals recommend replacing your brush head every three months. Good thing here is the Blue reminder bristles fade in color to let you know when it's time to replace the brush head.