A simple technique for independent torque control with miniscrew anchorage.

with preadjusted appliances because of the play between the bracket slot and the wire.1-5 In cases involving palatally blocked-out lateral incisors, inverting the brackets facilitates tooth movement without requiring 3rd-order bends. Torque control is even more problematic in patients with extreme lingual tipping, severe alveolar bone resorption, or root dehiscence. This article shows how an orthodontic miniscrew with a bracket-shaped head can serve as anchorage for controlled root movement of the target teeth with minimal effects on adjacent teeth, using preadjusted appliances without 3rd-order bends. Miniscrew-Assisted Root Movement

[1]  C. Burstone.  The mechanics of the segmented arch techniques. , 2009, The Angle orthodontist.

[2]  Kenneth A Johnson,et al.  Pull-out strength of monocortical screws placed in the maxillae and mandibles of dogs. , 2005, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[3]  R. Kapur-Wadhwa.  Physical and mechanical properties affecting torque control. , 2004, Journal of clinical orthodontics : JCO.

[4]  T. Eliades,et al.  Materials-induced variation in the torque expression of preadjusted appliances. , 2004, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[5]  Siatkowski Re.  Loss of anterior torque control due to variations in bracket slot and archwire dimensions. , 1999 .

[6]  T. Meling,et al.  The effect of cross-sectional dimensional variations of square and rectangular chrome-cobalt archwires on torsion. , 1998, The Angle orthodontist.

[7]  T. Meling,et al.  The effect of second-order couple on the application of torque. , 1998, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[8]  L K Rubenstein,et al.  Moments with the edgewise appliance: incisor torque control. , 1993, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[9]  B S Haskell,et al.  Auxiliary springs in continuous arch treatment: Part 1. An analytical study employing the finite-element method. , 1990, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[10]  R. Kusy,et al.  Analysis of moment/force ratios in the mechanics of tooth movement. , 1986, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.