Braces are used to fix iron rings on brackets. What is the difference between a rubber band and a steel ring?

Traditionally, ligation is done with ligature before ligating the ring, which is complicated to operate. The advantage is that it is tightly tied, not as easy to loosen as a rubber band. Friction will be less.

The operation of rubber band is faster, generally it only takes half the time of ligating silk, and the effect is good. Clinical application has its advantages and disadvantages. Now many patients choose rubber bands because they can't poke, so it's best to be safe! Similarly, because the friction is relatively large, it is not suitable for gap closure.