An interventional study of Split-mouth randomized clinical trial in Orthodontic Anchorage, Power Arm Sliding and Direct Sliding, sponsored by Tanzila Rafique. Enrolling by invitation at 1 site in Bangladesh. Open to participants aged 18 Years to 25 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-24.
Sponsored by Tanzila Rafique · Not applicable, Interventional, and Treatment
The goal of this split-mouth randomized clinical trial is to compare maxillary canine retraction with and without power arm during fixed orthodontic treatment.The main question it aims to answer is What are the differences in the rate of maxillary canine retraction between the power- arm technique and the direct sliding technique over a 6-month period time?
Researchers will compare a power arm placed in the vertical slot of the canine bracket with elastomeric chain to a mini-screw (experimental/PAS) against a conventional elastomeric chain from the canine bracket directly to a mini-screw (control/DS) during canine retraction phase.
Participants will:
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Experimental: Power Arm sliding techniqueA power arm placed in the vertical slot of the canine bracket and elastomeric chain attached from power arm to mini-screw.
Procedure: Split-mouth randomized clinical trial
Active Comparator / Control: direct sliding technique: Elastomeric chain applied directly from the canine bracket to a mini-screw on the contralateral side.
Procedure: Split-mouth randomized clinical trial
Experimental: Power Arm sliding technique: A power arm placed in the vertical slot of the canine bracket and elastomeric chain attached from power arm to mini-screw. Active Comparator / Control: direct sliding technique: Elastomeric chain applied directly from the canine bracket to a mini-screw on the contralateral side.
Also known as: Experimental: Power Arm sliding technique, Active Comparator / Control: direct sliding technique
Primary outcome measure
This split-mouth randomized clinical trial will compare maxillary canine retraction (in mm) with and without a power arm during fixed orthodontic treatment.
Time frame: 6 months
Secondary outcome measures
* Participants will receive fixed orthodontic treatment using a pre-adjusted edgewise appliance system (Roth, 0.018-inch slot). * Bilateral maxillary first premolar extractions will be done followed by placement of a titanium mini-screw or TAD (Vector TAS, 1.4×8.0 mm) between the second premolar and first molar on each side. * Levelling and alignment will be carriedout using a graduated arch-wire sequence (0.014-inch, 0.016-inch, 0.016×0.016-inch, 0.016×0.022-inch, and 0.017×0.025-inch). * Bilateral canine retraction will be initiated three months post-extraction on a 0.016×0.022-inch stainless steel arch-wire, with an elastomeric chain attaching from the power arm to the mini-screw on the experimental (PAS) side and directly from the canine bracket to the mini-screw on the control (DS) side, under a force of 150g reactivated every 21 days. * Evaluation will be done at 3 and 6 months to measure canine retraction rate (in mm) and angulation changes(in degrees) at both side.
Time frame: 6 months
Plan to share: No
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Tanzila Rafique