Now itís easy to clean interdental spaces and braces with the megasmile interdental brush. From the ultra slim brush with 1.7 mm diameter up to 5 mm, the size of the interdental brush adjusts to the interdental space and not the other way round. Interdental brushes are convenient also around braces: The white plastic layer protects teeth and braces. Insert, withdraw - over! Dangerous deposits and sticky proliferating plaque bacteria are quickly removed.