Final answer:
The archwire described is a beta-titanium or TMA wire, which is a hybrid of Nickel Titanium and Stainless Steel used for detailed adjustments in the latter stages of orthodontic treatment.
Step-by-step explanation:
The type of archwire being described is likely a hybrid that combines the properties of Nickel Titanium and Stainless Steel archwires, typically referred to as beta-titanium or TMA (titanium-molybdenum alloy) archwires. These types of archwires incorporate the flexibility of Nickel Titanium with the strength of Stainless Steel, making them ideal for the final phases of orthodontic treatment. They are used to make precise adjustments to tooth position, particularly when small, detailed movements are required to perfect the alignment of the teeth.
During orthodontic treatment, forces are applied to teeth to change their position in order to achieve proper alignment and bite. As mentioned, in Figure 4.37, the tension applied by the wire, or the force applied to the tooth (Fapp), is used to bring a protruding tooth towards the desired position within the dental arch, and in this context, it aligns toward the back of the mouth.