Curaprox interdental brushes prime yellow cps09 is effective removal of plaque and food debris from in between the teeth braces and bridges the prime range offers the thinnest of wire cores for the easiest access to smaller interdental spaces of all the brushes in the curaprox product offering 22mm 25mm 32mm 40mm and 50mm sizes available for effective cleaning cps10 has a cleaning radius of 40mm and an access radius of 09mm available in packs of 5 the prime range of interdental