A Letter from the Inventor of the Ultrasonic Toothbrush

Robert T. Bock July 24, 2013

Robert T. Bock HeadshotI am Robert Bock, a biomedical engineer, and the inventor of the ultrasonic toothbrush.

I have studied the therapeutic effects of ultrasound1, and invented the original Ultrasonic toothbrush in 1991. The US FDA approved my Ultrasonic toothbrush, the Ultrasonex, in 1992. My invention was sold since 1992 under the UltraSonex and Ultima brand names in the USA, Canada, Europe and in Japan. The latest highly advanced model is produced and marketed in Japan under the Smilex brand name.

Numerous clinical and laboratory studies1 of the various models of my ultrasonic toothbrushes in the past proven that they reduce plaque, gingivitis, gum disease, and bacteria in the mouth, greatly improving the dental hygiene of the user.

Clinical studies documented the connection between periodontal bacteria in the mouth and various diseases of the body, particularly heart disease. Researchers have found that people with gum disease are almost twice as likely to suffer from coronary artery disease2.

I recommend the daily use of the Smilex ultrasonic toothbrush for best dental hygiene. Use it with confidence. It will give you the best dental health, an improved general health and protection against cardiac disease.

Robert T. Bock


  1. Low-Intensity Ultrasound in Medicine and Dentistry
  2. Gum Disease Links to Heart Disease and Stroke