Should the handle and bristles of a toothbrush be made of the same material?

No, the handle and bristles of a toothbrush should be made of different materials. The bristles of a toothbrush are made up of very soft nylon fibres to protect our gums from any harm; therefore, they are long, elastic, lightweight, lustrous, and easy to use. The handle, however, is made up of strong, hard, and durable plastic to give a firm grip to the toothbrush.