EndoUltra™ (www.endoultra.com) is the only cordless activator unit capable of generating the tip frequency (40,000Hz) required to create sufficient acoustical streaming and the cavitation necessary to effectively clean, penetrate, and remove vapor lock. Research shows that competitive sonic activation devices, which operate at 160Hz are simply not effective in creating acoustic streaming or cavitation within the canal space. Sources: Med Oral Patol Oral Cir Bucal. 2012 May 1;17(3):e512-6. Review of ultrasonic irrigation in endodontics: increasing action of irrigating solutions. Mozo S(1), Llena C, Forner L. Int Endod J. 2007 Jun;40(6):415-26. Epub 2007 Apr 17. Passive ultrasonic irrigation of the root canal: a review of the literature. van der Sluis LW(1), Versluis M, Wu MK, Wesselink PR. Eur J Dent. 2008 Jul;2(3):198-203. Effect of passive ultrasonic irrigation on apical extrusion of irrigating solution. Tasdemir T(1), Er K, Celik D, Yildirim T. Visit www.vista-dental.com or www.endoultra.com to learn more! *EndoActivator™ is not a registered trademark of Vista Dental Products