Toothpaste is a gel dentifrice used in conjunction with a toothbrush to help clean and maintain the aesthetics and health of teeth. Toothpaste is used to promote oral hygiene; it functions as an abrasive agent that helps to remove dental plaque and food from the teeth, works to suppress halitosis, and delivers active ingredients such as fluoride or xylitol to the teeth and gums to help prevent tooth decay (cavity) and gum disease (gingivitis). This list includes notable brands of toothpaste, both historic and contemporary.