Wisdom Interdental Brushes are toothbrushes that are designed to fit between your teeth, reaching where regular toothbrushes can’t. Their gentle bristles give you a thorough clean while still being kind on your gums, and can also be used to clean around bridges, braces, or other dental appliances.nSlide your Wisdom Interdental Brush between your teeth and brush to remove plaque, food particles and other debris that has built up there. Do this for all of your teeth, when you’re finished replace the protective cap to keep your brush clean and safe. Brushes can be thrown away with your regular household waste.