The BT Circle Wire is a “roll‑type” orthodontic wire: instead of pre‑bent archwires, the wire comes on a coil/roll so the clinician can cut and shape as needed per patient.In general, such “circle formed / roll” wires are often made from nickel‑titanium (Ni‑Ti) alloy (or similar), giving them flexibility and spring‑back (shape memory / elasticity) useful for orthodontic tooth movement. As an archwire, the BT Circle Wire plays the role of guiding tooth movement — transmitting force through the brackets to move teeth and align the dental arch.

• Roll / coil form → customizable length & shape: Because it’s supplied in rolled/coiled form, the orthodontist can cut exactly the length needed for a patient’s arch and bend or shape as required. This allows flexibility and reduces waste compared to pre-shaped archwires.

• Elasticity & gentle force (if Ni‑Ti alloy): If the wire is Ni‑Ti, it provides continuous, gentle, and consistent force over time, ideal for the initial alignment and leveling phases of orthodontic treatment.

• Economical / versatile for varying cases: Because of roll‑type and cut-to-length flexibility, a single spool can serve multiple patients or varying arch sizes, which may be more cost‑efficient for dental clinics.

• Reduces need for frequent replacement / rebending: The “memory” or superelastic property (if present) helps the wire resume correct shape and continue applying corrective forces, reducing the need for frequent adjustments.