Transpalatal orthodontic appliance of superelastic or shape- memory alloy

摘要

Transpalatal orthodontic appliances are disclosed which utilize a shape-memory or superelastic alloy member as the force- supplying member of the device. Suitable alloys include the nickel- titanium (NiTi) alloys, the titanium-molybdenum alloys (TMA), and any other alloy composition which possesses superelastic or shape-memory characteristics. The alloy composition may preferably have a working rang of at least about 30% and a modulus of elasticity not exceeding about 15×10.sup.6 psi.