<prompt> What is the type of wire formed by twisting five tempered wire over a common wire?Twisted wireBraided wireAxial wireCo-axial wire  <response>: Coaxial ArchwireCoaxial archwires are made of a central core wire of 0.006 inch diameter wire with 5 or 6 outer wires. These wires are more flexible and were very frequently used for initial alignment of the teeth before the advent of Ni-Ti wires.Textbook of Orthodontics Gurkeerat Singh 2nd ed pg no 335 