Evaluation of Canine Retraction Using Double Slot Vs. Single Slot Orthodontic Brackets; CBCT Study

Abstract

Aim. The duration of orthodontic treatment is the primary concern of almost all the patients. Therefore, this increases the demand to find the best method to increase the rate of tooth movement with the least possible disadvantages. Subjects and Methods : This prospective randomized clinical study was conducted on a total sample of 32 orthodontic patients recommended for upper first premolar extraction as part of their orthodontic treatment plan. The patient ages were ranged from (16-26) years. Patients were assigned to (Group I) single slot bracket, (Group II) double slot bracket. Results: Regarding the post-treatment value, a significantly higher mean value was recorded for Canine Vertical Tipping Angle in single slot bracket group (12.65±6.15), in comparison to double slot bracket group (7.31±2.71), (p=0.00). Canine Cusp Retraction Distance showed a non-significant higher value in double slot bracket group (p=0.30). Conclusion: Double slot bracket is very effective in canine retraction as it showed less canine vertical tipping and more bodily movement during retraction, and more apex retraction value in comparison with single slot bracket.