Length: 4.6m (15ft) per Spool
POWER CHAIN are connected strings of ligatures (elastics). They are normally made from the same material that is used on the ligatures (the elastics holding the archwire to the individual brackets). In some instances, the power chains can be made of metal twists instead of elastic.
While typical elastics fit over each bracket individually, power chains connect the brackets. These chains then form a continuous band that runs across your teeth. You may notice that a power chain can be used for some teeth, and others will have traditional ligatures around the brackets. This combination of ligatures and power chains allows orthodontists to address multiple treatment objectives.
Power chains are most commonly used to help close space. It can be used to close space after a tooth is extracted, or used for generalized spacing. Because power chains apply more force than the brackets and archwire do alone, the treatment time can be sped up.
3 TYPES OF POWERCHAIN : Short, Long and Continuous.