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Clinical Pearls
5 (
3
); 116-117
doi:
10.4103/2321-1407.155839

Improvised tie backs for the preadjusted appliance

Department of Orthodontics and Dentofacial Orthopaedics, S.D.M. College of Dental Sciences, Dharwad, Karnataka, India
Department of Orthodontics and Dentofacial Orthopaedics, Yenepoya Dental College, Yenepoya University, Mangalore, Karnataka, India
Department of Orthodontics and Dentofacial Orthopedics, Hi-Tech Dental College and Hospital, Bhubaneswar, Odisha, India

Address for Correspondence: Dr. Ameet V. Revankar, Department of Orthodontics and Dentofacial Orthopaedics, S.D.M. College of Dental Sciences, Dharwad, Karnataka, India. E-mail: drameetr@gmail.com

Licence
This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-Share Alike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.
Disclaimer:
This article was originally published by Wolters Kluwer and was migrated to Scientific Scholar after the change of Publisher.

Abstract

The paper describes modified tiebacks for space closure with the MBT prescription preadjusted appliance. This modification solves the problems associated with the original design.

Keywords

Preadjusted appliance
tie backs
elastomeric module

INTRODUCTION

The use of elastomeric module tiebacks by McLaughlin and Bennett in the Preadjusted appliance ushered in the era of light force techniques for sliding en masse retraction. The technique being simple, effective has stood the test of time. However, the way the elastomeric module is tied to the archwire using a ligature wire as originally described by the authors can introduce certain problems such as:

  • Hygiene maintenance difficulty

  • Gingival/soft tissue lacerations from the ligature wire

  • Hindrance with the premolar brackets having premolded hooks [Figure 1].

    Tie back as originally described by McLaughlin and Bennett
    Figure 1
    Tie back as originally described by McLaughlin and Bennett

As a solution to these problems, we describe an improvised method of making the tie backs. Using an artery forceps insert a piece of 0.009” stainless steel ligature wire (3M Unitek, Monrovia, CA 91016) through a elastomeric module (3M Unitek, Monrovia, CA 91016) and wind it onto itself to form a smooth coil extending from the elastomeric module to a distance 1.5-2 mm short of the archwire hook [Figure 2] and hence that when the elastomeric module is stretched the wound portion of the ligature wire extends up to the archwire hook [Figure 3].

Modified tie back winding
Figure 2
Modified tie back winding
Intraoral picture with modified tiebacks
Figure 3
Intraoral picture with modified tiebacks

This article describes improvisation of the Type 1 tie back (distal module).[1] Similar improvisation can be used for the Type B[1] (mesial module) tie back as well. This improvisation overcomes the problems with the traditional method as previously listed.

References

  1. , , . Systemized Orthodontic Treatment Mechanics. Edinburgh: Mosby; .

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