The Effectiveness of Double-slot Brackets Versus Single-slot Brackets on the Rate of Canine Retraction

"Miniscrews will be inserted in the buccal alveolar bone between first and second molars bilaterally and ligated to second premolar.~Canine Retraction using Nickel titanium closed-coil springs delivering a force of 150 gram, extending the spring between the canine and first molar hooks.~retraction on double 0.016'' Stainless steel round wires in both slots of the double slot brackets.~Re-activation of the coil spring will be done in the follow up visits to maintain a constant force through the study."

"Miniscrews will be inserted in the buccal alveolar bone between first and second molars bilaterally and ligated to second premolar.~Canine Retraction using Nickel titanium closed-coil springs delivering a force of 150 gram, extending the spring between the canine and first molar hooks.~retraction on single 0.017x0.022'' Stainless steel wire. Re-activation of the coil spring will be done in the follow up visits to maintain a constant force through the study."