Oral-B Interdental Pocket Size Tapered Pivoting Head Compacts - 2 ct. The Oral-B Interdental Brush System provides effective cleaning around bridges, braces and wide interdental spaces helping you to keep your teeth clean and healthy. Convenient Pocket Size. Brush Angle is adjusted by moving the sides of the handle, eliminating the need to touch brush. Pivoting Head. Size: 2 Count.