There's not much evidence that electric toothbrushes are better than manual toothbrushes. In the case of the ones with timers, their biggest benefit is probably just getting you to brush as long as you should (two or three minutes). There is some evidence that electric toothbrushes that spin in both directions, like some made by Oral-B, are better than manual brushes. My dentist recommended a two-speed electric toothbrush. The faster speed is for your teeth, the slower speed is for your gums. You need to be gentle with your gums. If you use a manual toothbrush, go with a name brand toothbrush such as Crest or Oral-B. It's important that the bristles be rounded at their tips. You can't see this by eye. Go with soft bristles. Hard and medium bristles can cause irreversible damage to the gums, which is very bad for your teeth. They can lead to periodontal disease and receding gumlines. Replace your toothbrush every two or three months. Worn bristles clean about 30% less effectively. Moreover, worn bristles are better breeding grounds for bacteria.
You should get a new toothbrush usually once every 3 months. In addition you should also make sure that germs and bacteria do not accumulate in the bristles of the toothbrush. Many people use a toothbrush sanitizer to keep their tooth brushes clean and free of germs and bacteria. It is worth investigating have a sanitizer, as well as having regular toothbrush replacement, in order to have the best oral hygiene.
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