Initially, the Ultima worked only on ultrasound, but a few years later, a motor was added to give the Ultrasonex brush additional sonic vibration.
Broxo S.A. tudi danes še vedno proizvaja in trži nizkonapetostne električne zobne ščetke, pojavili pa so se tudi novi veliki tekmeci, kot sta na primer Philips Sonicare in Braun Oral-B.