the toothbrush
One should exchange the toothbrush best of all every or every second month. When, this one recognises by the fact that the bristles fray. The cleaning feeling is also not so especially great with such old brushes.
The right toothbrush to the dental cleaning should own best of all one small head, so that one comes with her easily everywhere and a level plastic bristles field at the rounded ends have.
Thus the dental glaze cannot be damaged so fast. Toothbrushes with bristles from natural materials are not to be recommended, because they easily become the hotbed of bacteria. There the dental cleaning has even negative results.
The hardness of the bristles should be either softy or only medium. Toothbrushes with extra-hard bristles are not healthy for the teeth. An electric toothbrush cleans not necessarily, by the way, better.