New Jordan Clinic Brush Between Middle Brushes has a unique shape on brush head - WaveCut that provides better cleansing of the dental space. The brush has the perfect shape for cleaning between the teeth: the bust pops out on the back of the tooth and the shorter bust cleans effectively between the teeth. The tuppen cleans the back of the dental space on the way back. Jordan Clinic Brush Between S has a diameter of 0.5mm and a bust diameter of 3mm.