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The science behind
Ultrasound is your secret weapon in the war against plaque. A recent university study¹ shows that, when exposed to ultrasound, bacterial chains that typically make up plaque were torn up, rendering them harmless. MEGASONEX®'s proprietary Megacrystal™ operates at a safe low-power medical frequency of 1.6MHz = 1,600,000 Hertz (cycles per second) = 96,000,000 pulses per minute, similar to the frequency used by doctors to treat fractured bones. Typical "sonic" toothbrushes have bristle movements of 15 to 40 thousand movements per minute or 125 to 333 Hertz, which is lower by approximately 4,800 times. The ultrasound technology used in the MEGASONEX® toothbrush has been approved by the FDA for use in a toothbrush since the early 1990s.
Study conducted at the Tokyo Medical and Dental University, Department of Preventative Dentistry. Streptococcus mutans, a species of bacteria typically making up human plaque, was exposed to ultrasound at a frequency of 1.6MHz or 96,000,000 pulsations per minute, damaging bacterial chains and severing their methods of attachment, rendering them harmless. The study was conducted on the original version of the Ultima™ toothbrush that had no additional sonic movement whatsoever. Correlation between the results obtained on the Ultima™ and MEGASONEX® has not yet been established.
¹Shinada K, Hashizume L, Teraoka K, Kurosaki, N. Effect of ultrasonic toothbrush on Streptococcus mutans. Japan J. Conserv. Dent. 1999; 42 (2): 410-417.
