These are the metal brackets connected by wires that most people picture when they think about orthodontic treatment. In the past these brackets were connected to the teeth with metal bands. However, modern brackets are smaller and can be bonded to the teeth, preventing the need for the bands. There had been many improvements in the wires that connect the brackets together too. While in the past the wires were stiff and casued discomfort when first inserted, now new heat-activated archwires use your body heat to help teeth move more quickly and less painfully.