Mahmoud Sakr , Kareem Mahr And Wael M. Refai,

ABSTRACT


Aim: The Study Was To Compare Between Two Different Torquing Modalities In Anterior Maxillary Permanent Teeth Using Cone Beam CT (3D Analysis)

Materials and Methods: Cone Beam Computed Tomographic Radiographs Of 20 Patients Suffering From Flaring In The Maxillary Anterior Teeth And All Cases Indicated For First Premolars Extraction. Half Of Them Had Been Treated With (0.017 ? 0.025 Inches) Preformed Reverse Curve TMA With Closing (T-loop )and The Other Half Had Been Treated With Torquing Spring As An Auxiliary Spring Under The Main Arch-wire Together With Continuous Power Chain For Retraction Of The Upper Anterior Teeth. The Pre And Post CBCTs Were Analyzed Three Dimensionally Using The Image Processing Method(*). Angular Measurements For The Maxillary Four Anteriors Were Taken To Evaluate The Performance Of Both Appliances To Evaluate Amount Of Torque Control During Retraction.

Results: Torqueing Spring Appliance Controlled Torque During Retraction More Than The TMA Closing Preformed (T-loop ). Conclusion: Using Of Torqueing Spring Appliance Are More Effecient To Produce Bodily Movement Than The TMA Closing Preformed (T-loop ).