网页2024年8月13日 · Wisdom interdental brushes. Wisdom interdental brush sizes are not as extensive as some other brands; their basic ‘Daily Use' brush has only two sizes (0.45 and 0.7mm), and their ‘Pro Flex' brush with a flexible neck comes in four sizes (0.45, 0.6, 0.7 and 0.8mm). Wisdom also make a range of ‘Clean Between' rubber interdental brushes.