Smile Brite Toothbrush - Fixed Head, V Wave, Nylon, MediumNylon bristle brushes are the most common type of toothbrushes worldwide. Smile Brite supplies very high quality nylon brushes with full end rounding an polishing of the bristles; this critical step ensures that there are no rough bristle ends to harm the gums or the enamel. Unlike other major toothbrush manufacturers, Smile Brite utilizes a state of the art end-rounding and polishing process with superior quality control at every stage. The fixed head line also features an ergonomic ez-grip handle with state of the art design to reach all corners of your mouth easily and effectively