Historically, Sonicare has been better than Oral-B. There was probably one time when they both came in 2nd and 3rd to the Waterpik. However, between the Sonicare Flexcare and the Oral-B Triumph, they're pretty equal. I think two studies indicate that Flexcare being better than the Triumph, but latest study concluded Triumph was better than Flexcare. However, between Triumph and Elite, the Triumph triumphed.
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Originally Posted by Tarmac
The key to electric toothbrushes is the timer. It forces you to brush for 2 minutes.
That may not be necessarily true. A single blind, controlled clinical test was done between the Sonicare Elite, Oral-B P40 and a manual toothbrush (with a timer of 2 minutes). Took in 180 participants with gingival inflamation, 160 completed the trial. After 2 weeks, electric toothbrushes showed a slight improvement. However Significant reduction in plaque and gingivitis were seen at 4 weeks compared to manual toothbrushes. You could find similar tests that may have different protocols arriving at similar conclusions. It's really about technique, or in case of electric toothbrushes, taking away from the the dependence of patients' techniques. ---
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Originally Posted by sonick
What's the differences between the different lines of Sonicare? Flexcare, Essence, Healthywhite?
There's a ton of things that can be varied. The amplitudes of the sweeps, the frequency of the sweeps, the contour of the bristles, the cut of the bristles. Not being in the industry myself, I can't think of what else could be varied, but there's probably more. As a little tangent, I just remembered reading an article about using nano sized particles to polish teeth. It makes the teeth so smooth, bacteria can't adhere to the teeth. Essentially you wouldn't need to brush your teeth.