Residents' journal review

Reduced frictional resistance during tooth movement is believed to increase the efficiency of the orthodontic force system. The method of ligation contributes to the amount of frictional force between the archwire and bracket. Studies have shown that elastomeric ligatures tied in a figure-8 pattern had significantly more friction than conventional elastomeric or stainless steel ligation. The authors tested whether figure-8 elastomeric modules affect the rate of mandibular incisor alignment and whether there was a difference in the number of bracket failures between figure-8 and conventional groups.

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