Push Coil
Push Coil is actually known as Open coil springs. It is used to open up space. They are used on the main wire. When it is compressed between two or more teeth, it exerts the force outwards from centre, which pushes the teeth along with it with force.
The force is usually determined by the length. More the compression, more the force it is. However, by saying that excessive force cannot be used. The ideal length would be from the end of one bracket to the full size of the other bracket.
Please note, Push coil shouldn’t be used with NiTi wires and Terminal end of the push coil should be quicklig.
To see how to place a push coil, watch the video above.
Other helpful youtube links:
1. Closing Coil/Open Coil in Orthodontics- • Closing Coil/Open Coil...
2. Dead Coil/ Closed Coil in Orthodontics- • Dead Coil/ Closed Coil...