Are they good for your teeth or are the conventional brushes better than the plastic bristles?
Most all toothbrushes have plastic bristles whether it a conventional or electric brush. As long as the bristles are soft they are fine for your teeth and gums. Using a hard toothbrush or a lot of pressure when you brush can cause your gums to be brushed away which is called recession, or your teeth to wear away which is called abrasion. The reason plastic is used it that is it easily and uniformly manufactured. Natural bristle brushes are an option but I wouldn't recommend them. Hope that helps! JAMRDH - a dental hygienist
