Orthodontic therapy is a procedure that is mainly based on the use of force management archwires which carry out the necessary tooth movements by storing and distributing the biologically tolerable forces and producing the alteration position of teeth. Orthodontic wires are produced from different materials like metals, alloys, polymers, and composites. It is important for the clinician to understand the properties of orthodontic wires as well as their clinical implications to turn out the optimal results, since oral conditions may influence their behavior. Older archwire materials are available with the advances in materials science and technology which opens up new views for orthodontic treatment. Due to the high esthetic demand by the patient, esthetic materials are used for orthodontic treatment. This book details about the physical properties, metallurgy for different archwires along with clinical implications.