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toothbrush

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nismail | 12:18 Wed 23rd Nov 2005 | Body & Soul
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for how long has a brush been in use that would reduce its plaque removing ability up to 30 per cent than a new one?
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I would say that depends on many factors such as the hardness of the bristles, the material they are made of etc... but probably a fair assessment would be that when all the bristles have fallen out then it might be time to buy a new one.
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so, for how long a brush can be use? Or brush expired date?
Dentists advise you to change your toothbrush after 3 months
Where are these questions coming from? This has been asked loads of times

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