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Which criteria should one look at when purchasing an electric toothbrush (from a medical perspective, i.e. ignoring non-medical criteria such as price, battery, life expectancy or warranty), and what's at the optimal value for each of these criteria?

Some ideas of criteria:

  • number of brush strokes per minute
  • vibration mode
  • shape of the brush (see below for some examples)

If the question is too broad, I don't mind asking about each criterion in separate questions (though I might not be aware of all the criteria).


Examples of shapes of the brush:

enter image description here


I have crossposted the question at:

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Refer to the [Cochrane Systematic review] about this issue, available at [1]http://onlinelibrary.wiley.com/doi/10.1002/14651858.CD002281.pub3/full#CD002281-tbl-0012

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