halbert said...
Phillips Sonicare is one
We've been using Sonicare's for years. I believe they are sonic, not, ultrasonic, brushes, but please correct me if I am wrong. I have some dental work and was told not to use ultrasound.
Sonic vs Ultrasonic Toothbrush"To be classified as a sonic toothbrush, the motion or vibration from the brush has to be quick enough to produce a ‘humming’ sound that is within the audible range of the human ear (20 Hz to 20,000 Hz). Sonic brushes typically offer 12,000-24,000 oscillations or 24,000-48,000 movements per minute.
...
Ultrasonic toothbrushes, unlike sonic ones, do not rely on a physical motion to clean the teeth.
An ultrasonic toothbrush is one that uses a very high frequency of vibration referred to as ultrasound to remove plaque and bacteria from the teeth.
To be classified as such, the brush has to emit a wave of at least 20,000Hz or 2,400,000 movements per minute, considerably more than the very popular sonic technology."
Djin
Post Edited (DjinTonic) : 11/9/2020 6:37:16 PM (GMT-7)