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What? All the electric toothbrush I have come with a two minutes timer. Never had a single cavity.
by phito 3y ago
What? All the electric toothbrush I have come with a two minutes timer. Never had a single cavity.
- kaliszad 3y agoThere is no particular reason it should be 2 minutes. Certainly not for both jaws, if you took 2 minutes per jaw that would be more reasonable. The point of this timer is probably (I don't know that for a fact) to push most people to brush much longer than they would as most people still brush for only 30-45 seconds a day.