This is a round‑section arch wire used in orthodontic braces to guide and correct tooth alignment. Round‑type wires are typically used in the initial stages of orthodontic treatment (leveling and aligning) because they are more flexible and deliver gentle, continuous forces to gradually move teeth.

• High elasticity / springiness — the wire flexes easily and returns to its original shape, making it ideal for gently nudging teeth into position without excessive force.

• Low stiffness / gentle force — because of its round cross‑section and often the use of flexible alloys (like Ni‑Ti), it applies lighter, more continuous force, which improves patient comfort and reduces risk of bracket detachment.

• Reduced friction with brackets — smooth finish and round cross‑section help the wire slide easily through bracket slots, facilitating easier tooth movement and reducing stress on attachments.

• Good for initial alignment and leveling — ideal for early treatment phases when teeth are misaligned or crowded; later stages often use stiffer rectangular or square wires for finer control.

• Versatile sizes — round arch wires often come in multiple diameters (e.g. 0.012″, 0.014″, 0.016″, 0.018″, 0.020″) to adjust the level of force and flexibility depending on treatment needs.