Newer and newer archwires which were released from time to time have revolutionised the sphere of orthodontics. Nitinol is used for products created by Franz Freudenthal to treat patent ductus arteriosus, blocking a blood vessel that bypasses the lungs and it has failed to close following delivery in an infant.[46] https://nickel-titanium-wires04579.blog-gold.com/43716117/fascination-about-rectangular-niti-wires