Emmi-Dent Ultrasound Toothpaste Fresh Emmi-Dent Ultrasound Toothpaste is specifically designed for Emmi-dent Ultrasonic Toothbrushes. Emmi-Dent Ultrasound Toothpaste is a specially formulated nano-bubble toothpaste that supports & enhances the ultrasonic effect on the surface of the teeth & gums. Nano-bubbles are up to 1000x smaller than other toothpaste bubbles, allowing them to creep into even the smallest crevice. The unique imploding action which is caused by the ultrasound destroys the particles & breaks up the membranes of bacteria & germs. The ultrasound implodes millions of bubbles every millisecond, while at the same time creating new ones. This continuous cycle goes on while the ultrasound is transmitted from the brush head. Unlike other toothpastes, Emmi-dent toothpaste does not contain abrasive particles (experts call this RDA zero = zero abrasives). Abrasives can damage & erode the enamel over time (this removes the natural defense of the enamel against bacterial attacks which can lead to cavities). Nano-bubbles destroy bacteria, leaving you with fresh breath for up to 12 hours! Highly recommended to be used together with the Emmi-dent ultrasonic toothbrush for the ultimate cleaning experience.