Interprox Plus Interdental brushes Conical 1.7mm x6 Interprox Plus Conical is designed to remove biofilm (bacterial plaque) from 1.3mm interdental spaces. * The dimensions of the conical head, adapted to the posterior areas, allow to obtain a minimum interdental space of 1.3 mm (PHD = 1.3) The angled head of the Interprox Plus conical brush allows perpendicular insertion into the interdental spaces of molars and premolars. This specific shape allows perpendicular insertion, avoiding injuring the gums. The size of the head guarantees a deep cleaning of the interdental spaces of at least 1.3 mm. The brush also comes with a protective cap to make it easier to transport.