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  • I mean, as they kind of point out in the article, this doesn't actually say terribly much. I've always had the impression that electric toothbrushes are great for scrubbing off the plaque on the big surfaces of your teeth, while they're probably worse at reaching all the weird little angles of your teeth. This could result in 20% less plaque in total, while not removing it from where it lingers around and causes cavities. At the same time, if you also floss regularly, maybe you've got your weird little angles covered differently already. It depends on quite a few factors, for which a meta study like this can hardly do justice...

    • I mean it also shows a 6–11% reduction in gingivitis, so it's at least getting some of those weird little angles better. Gingivitis most commonly occurs because plaque stays too long around the lining of the gums, and thus electric brushes should at least be more effectively getting this off the bases of the crown – which to me were always way more difficult and awkward to effectively treat with a manual brush.

      Meanwhile, there's really no such thing as using your toothbrush as a substitute for proper interdental cleaning, and that's why your dentist really will notice if you haven't been flossing properly. A water flosser is best for something like that.

  • I was surprise it was this low. The wording of the study result is a bit different, it's not % of effectiveness, it's a % reduction in plaque.

    The evidence produced shows benefits in using a powered toothbrush when compared with a manual toothbrush. There was an 11% reduction in plaque at one to three months of use, and a 21% reduction in plaque when assessed after three months of use. For gingivitis, there was a 6% reduction at one to three months of use and an 11% reduction when assessed after three months of use. The benefits of this for long-term dental health are unclear.

    • That's what effectiveness means, since removing dental plaque isn't a binary thing. If you're trying to remove plaque, then a percentage reduction is a corresponding increase in effectiveness. If a vaccine has a 20% reduction in disease compared to another vaccine, it's 20% more effective at preventing the incidence of disease. I'm pretty sure this comment isn't just splitting hairs; it's actually wrong in its pedantry.

  • I guess I went full circle since I returned back to classic ones. I used electric one for years but suddenly I started to feel with my tongue that it didn't do good job. Changing the head didn't help. My dentist was also surprised but she suggested to try to use also classic one when I finish with electric. And voila, it really did the job. To this day I'm not sure what happened ...

    • Did the head look like it had a bad hair day by the time you were replacing it?

      With sonic and oscillating toothbrushes, you have to use gentle pressure almost letting it float over the teeth in order to allow the motion to transfer the tips of the bristles. If you press too hard, you will only be wiping around the toothpaste with the (rounded) sides of the bristles. Ideally the brush head should look practically new (aside from the indicator bristles turning white) by the time you would replace it.

96 comments