CURAPROX CPS 08 prime interdental brush refill The small, ergonomically designed helpers made of thin Cural wire and with fine, long filaments have proven themselves for years. Thanks to the nickel-free, ultra-thin and yet extra strong surgical wire, the filaments are very flexible and enable thorough cleaning - even in the narrowest interdental spaces. They stretch out in the gaps like umbrellas and clean properly. CPS prime 08 8-pack refill - ultra-fine bristles with umbrella effect Application : Place the interdental brush at the entrance to the interdental space, place the tip at an angle to the tooth axis and carefully insert it at the correct insertion angle until it reaches the middle of the tooth. Without pushing the brush any further forward, place the handle perpendicular to the tooth axis. Carefully push the brush through and then pull it out again.