Jules I'm not sure about the type of wire lacing you're referring to, due to it having a powerchain on top of it?
I use wire lacing to 'hold' teeth where they are, either because I don't want them to move, or they're where they need to be. After IPR I use powerchains or power thread to close the gap.
Maybe your ortho isn't working the wire lacing to keep some gaps as they are and the powerchains to close others.
Sorry I can't help. Talk to your ortho and get an accurate explanation.


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