1. Too long usage of the same brush

You should never use the same toothbrush for more than three months, it should be changed at least four times a year, otherwise the risk of caries and various gum problems grow. The basic rule according to which you will be able to judge whether the brush is due for a change or not, is by the appearance of the hair. Namely if they are bent, broken and rare it is time to replace it with a new one.

2. Storing the brush too close to the toilet

We all keep our toothbrushes in the bathroom, but it is very important that they be in closed cabinets. If they are in the open, they should not be near the toilets, more accurately should be at least six feet away from it. The remains of different bacteria may enter the area to the distance from the toilet, so it is not good to keep a toothbrush on the sink if it is close to the toilet shell.

3. Store the brush in plastic container

One of the worst forms of keeping toothbrushes is in a plastic box, namely a combination of moisture, which keeps such a closed container, is a hotbed for bacteria. The best way of keeping the brush is in a holder or a cup, and it is important that the brush head is covered with a special fabric that acts as a shield.

4. Exposure of the brush to warmth

Though disinfecting toothbrushes in the microwave is a very unusual way, numerous studies have shown that it is one of the most popular, but also the most damaging. Experts warn that the microwaves and heat can cause changes on the plastic resulting in release of hazardous bisphenol A. The best way is to wash the brush in warm water and sink it in antibacterial solution; in this way it is possible to reduce the number of bacteria on your toothbrush

5. Common cup

Studies have shown that 80 percent of family toothbrushes are kept in a common container which is totally wrong, because in this way the bacteria and viruses are transmitted the fastest.

(Source: http://www.healthyandnaturallife.com)