A toothbrush is a dental hygiene tool used to clean the teeth and gums by manually removing plaque and food debris. Toothbrushes typically consist of a handle and bristles arranged in a pattern to effectively clean all surfaces of the teeth. Manual toothbrushes require manual movement of the hand to brush the teeth, while electric toothbrushes use oscillating or rotating movements to assist in plaque removal. Choosing the right toothbrush and replacing it regularly are important aspects of maintaining good oral hygiene.