To ensure the best possible fit, a dentist will take a 3D image of the patient’s mouth. A reverse mold is created, and ultrasoft bristles are attached. To use it, bite and grind teeth on the toothbrush 15 times. It only takes 6 seconds, but is efficient enough that it could eliminate the need for flossing. Over the course of the year, it saves 55 hours of brushing time.