The GUM Technique Deep Clean Toothbrush has a unique Quad-Grip handle to help you hold the brush at the proper angle. Whether you’re right-handed or left-handed, this handle intuitively allows you to hit upper and lower teeth at a 45-degree angle, which is more effective at cleaning away dental plaque from both gums and teeth, thus giving you the proper “technique.” The Deep Clean bristles are finely tapered to enable deep cleaning by allowing its narrow and extremely flexible bristles to reach deep into the crevices between gums and teeth. Cleaning in these hard-to-reach areas removes potentially disease-causing germs and dental plaque that other brushes leave behind. The bi-level second layer of bristles in the center of the brush is designed to clean the exposed tooth surfaces. Along with this toothbrush comes a convenient stay clean cap to keep the bristles clean of germs while not in use.