Q105. Which one of the following elements is associated with teeth disorder? (a)Chlorine (b) Fluorine (c) Bromine (d) Iodine
Fluorine is the element that is associated with teeth disorder because the presence of sodium fluoride in drinking water at the level of 2 ppm may cause mottled enamel in teeth, skeletal fluorosis, and may be associated with cancer and other diseases.
