A toothbrush is an essential dental instrument designed for the mechanical removal of plaque and food particles from the surfaces of teeth, along the gumline, and on the tongue. It comprises a slender, ergonomic handle, typically made of plastic, that allows for a comfortable grip and maneuverability within the mouth. At one end of the handle is the brush head, which is densely packed with numerous bristles. These bristles, traditionally made of nylon but increasingly incorporating various synthetic materials or even natural fibers, are arranged in varying patterns and lengths to effectively reach and clean different contours of the teeth. Toothbrushes come in a range of sizes, bristle hardness (soft, medium, hard), and designs (manual, electric, sonic, ultrasonic) to cater to individual needs and preferences, and are typically used in conjunction with toothpaste to enhance cleaning efficacy and deliver fluoride. Regular and proper use of a toothbrush is fundamental for maintaining oral health, preventing cavities, gum disease, and bad breath.