How it is often necessary to change a toothbrush?
The vast majority of people, including the author of this article, changes a toothbrush when it comes to perfect worthlessness, becoming similar to a shaggy monster. As it appeared, it is very wrong. Such brush not just does not bring benefit, and does harm, and that is why. First, it is necessary to change a toothbrush because the bristles which are sticking out extensively do not clean a microbic plaque as lose ability to get a close formation there where to them it is intended.
Secondly, it is necessary to change a toothbrush because on bristles after long use there are microcracks as material of which the bristle is made wears out. As any person will not sterilize a toothbrush before use, microbes from tooth deposits and a microparticle of food get to microcracks and roughnesses. These two components perfectly with each other get on, in favorable conditions a wet heat bath of the room microbes strenuously breed, as a result on an old toothbrush there can be their whole colonies.
In the third, it is necessary to change a toothbrush because the bristles becoming from wear rigid which are sticking out in different directions injure a gentle mucous membrane of an oral cavity, also bringing there microbes concerned above that is not useful at best, and in the worst can lead to stomatitis. Now, even it became clear to the most skeptically adjusted users of toothbrushes that it is necessary to change a toothbrush before emergence of a stage of a lokhmatost. There is a question how to learn that it is already time?
You can receive the detailed answer on this matter, having attended a dental forum, we will give to you several main advice. Some producers of toothbrushes install the indicator in the form of the site of the painted bristle when it becomes colourless, there comes time to change a toothbrush. Observations of serious scientists and testing of toothbrushes in the conditions of various loadings showed that if to brush teeth as stomatologists – three minutes twice a day, from average force pressing recommend, then the bristle wears out in three months. Thus, it is necessary to change a toothbrush time in three months. Not to get confused, stomatologists advise to date change of a toothbrush for change of season. If you brush teeth more often or strongly press a brush, then it can wear out earlier, and then change it at once as soon as noticed characteristic "lokhmatost" of a bristle.
Applying these simple rules, you will save yourself from a set of problems, eventually to change a toothbrush far more simply, than to change teeth.
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