Power chains are elastic connectors that join braces brackets together. Unlike the individual ligatures that secure the wire to each bracket, these connected elastics exert a continuous force across multiple teeth. This force is often utilized to close spaces, correct rotated teeth, or align teeth along the archwire where greater pressure is needed compared to standard bracket and wire adjustments. For example, they may be used to close a gap after an extraction or to consolidate teeth before refinement of alignment.
The employment of this orthodontic tool offers several advantages. The connected structure provides a more consistent and concentrated force, which can lead to quicker movement in targeted areas. Their implementation historically marked a significant step in achieving more complex tooth movements with braces, enabling orthodontists to address alignment issues more effectively than with wire adjustments alone. The targeted force allows for a refined and efficient treatment plan.