How to choose a tooth brush

It is necessary to choose a correct tooth brush for maintenance of hygiene of a mouth. At brush choosing follow advice:

the head of brush should be narrow, small, with a dense bristle for penetration into remote places in a mouth;
now synthetic tooth brushes practically nothing concede natural, besides dry faster;
pay attention to the ends of a bristle: they should be rounded;
it is better to choose tooth brushes with soft or average rigidity;
the handle of a brush should be enough flexible for feeling and adjusting pressing at teeth cleaning.