<qa>  What is the longest and most important stage in orthodontic treatment of cases that require premolarsThe retraction of the canines is one of the longest and most important stages in the orthodontic treatment of cases that require premolars extraction. The retraction phase of the canines into an extraction site with conventional treatment method usually lasts about 4 to 6 months under normal circumstances. The use of dentoalveolar distraction DAD technique has been considered a very important step in this field. It has been shown by early case reports that this technique can be employed to retract canines within 10 to 14 days. 