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Bracket engagement is accomplished with ease even in cases of severe crowding.
The archwire does not have to be deformed into full conformity with the malaligned teeth because the spring clips are also deflecting elastically.
In less than two months much of the alignment has been done using an .015 coaxial archwire.
In many locations the spring clips have done more of the work than the archwire.
With an .018 coaxial wire in place for an additional 6 weeks, the alignment has been completed. A small space has formed where the canine and lateral incisors have "rolled" away from each other on the patient's left side.
With the .018 coaxial archwire still in place, the space between the lateral incisor and canine has closed because, after alignment, there is virtually no measurable friction between an .018 coaxial archwire and the .022 slots of the SPEED brackets. Even minute
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