The element associated with teeth disorder is Fluorine. Fluorine is a chemical element that is commonly found in dental products such as toothpaste and mouthwash. It plays a crucial role in preventing tooth decay and strengthening tooth enamel. When exposed to fluorine, the enamel on our teeth becomes more resistant to acid attacks from food and bacteria, ultimately reducing the risk of cavities. Chlorine, bromine, and iodine are also halogens, but they are not specifically known for their dental benefits. While all of these elements have unique properties and uses, Fluorine is the one directly associated with teeth health.