GUM Toothbrush Technique 490 Soft Colors and designs subject to availability Gum Technique Soft Normal toothbrush ref. 490. For high performance brushing. Quad-Grip Handle: The diamond-shaped design of this handle naturally directs the bristles to the ideal brushing angle: 45°. Learn and adopt the perfect 45° brushing gesture. Rounded cut: the 2 raised central rows effectively remove plaque, especially at the gum line. Ergonomic handle: bi-material (polypropylene/elastomer). The toothbrush has an excellent grip and is comfortable to use for more effective brushing.