Wisdom Clean Between Interdental Brushes Fine are a great solution for cleaning between the teeth, especially if you have previously found flossing difficult. Wisdom Clean Between Interdental Brushes Fine are specially designed to clear away food debris, plaque and bacteria from between the teeth where your toothbrush can’t reach. Its tapered wire-free design allows the brush to slide easily between the teeth, while its soft rubber coating makes them gentle on the gums. These convenient and disposable brushes are also ideal for cleaning around orthodontic appliances, implants, metal fillings and crowns.