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The canine and bicuspid together are lacking approximately 6.5 mm of space. If the bicuspid were properly aligned here, it would occupy all of the space required by the canine. In this situation, the canine and bicuspid SPEED brackets can be used as engines to propel five teeth distally as a unit over a significant distance.
The canine and first bicuspid have "rotated" 26° and 19° respectively in two months. The lower incisors have tipped labially but the posterior teeth are also being driven distally by the action of the canine and bicuspid SPEED brackets (note the space forming mesial to the canine).
The initial .015 coaxial wire was given sharp bends mesial to the canine brackets so that it rested only 1 mm labial to the lateral incisor brackets before engagement.
Even the most severely rotated canine has been moved into ideal alignment by the action of its "bracket" and the following archwires over the previous 8 months:
.015 stainless steel coaxial
.016 stainless steel coaxial
.020 nickel titanium
.021 x .025 nickel titanium
Only the initial .015 coaxial wire had any bends placed in it by the operator.
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