It is clear that tooth discoloration has a multifactorial etiology, manifested as a result of complex physciochemical interaction between chromogens and tooth substance. In the management of patient with tooth discoloration such information is valuable in the decision-making process when considering whether or not to treat a condition, or refer on to a specialist for an opinion or for treatment.Prevention of avoidable cause of tooth staining is important; the general dental practitioner may be able to offer advice to medical colleagues when alternative therapy is available. A grasp of the...