Can't reach the back? Piksters Interdental Brushes fit into any 'connect' handle.
Interdental brushes for cleaning between teeth where a toothbrush cannot reach. Like floss, only easier. Less expensive per use than many other alternatives as they are reusable. Stronger, stiffer, plastic coated wire resists buckling and last longer. Also, the ‘Connector’ cap keeps the bristles clean in-between uses.