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 Table of Contents  
CLINICAL INNOVATION
Year : 2015  |  Volume : 49  |  Issue : 3  |  Page : 163-164

Clinical bending of nickel titanium wires


1 PG Student, Department of Orthodontics, Chandra Dental College and Hospital, Safedabad, Barabanki, Uttar Pradesh, India
2 Asst. Prof, Department of Orthodontics and Dentofacial Orthopedics, Chandra Dental College and Hospital, Safedabad, Barabanki, Uttar Pradesh, India
3 Professor, Department of Orthodontics and Dentofacial Orthopedics, Chandra Dental College and Hospital, Safedabad, Barabanki, Uttar Pradesh, India
4 Professor, Department of Orthodontics and Dentofacial Orthopedics, Oxford Dental College and Hospital, Bengaluru, Karnataka, India
5 PG Student, Department of Orthodontics, Saraswati Dental College and Hospital, Chinhut, Lucknow, Uttar Pradesh, India

Date of Submission07-Nov-2014
Date of Acceptance27-Apr-2015
Date of Web Publication16-Sep-2015

Correspondence Address:
Stephen Chain
Department of Orthodontics, Chandra Dental College and Hospital, Safedabad, Barabanki - 225 001, Uttar Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0301-5742.165565

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  Abstract 

Since the evolution and the involvement of Nickel Titanium wires in the field of Orthodontics. The treatment plan has evolved with the use of low force Nickel Titanium wires. Because of their high springback, low stiffness, they are the key initial wires in leveling and alignment but have poor formability. Since poor formability limits its ability to create variable arch forms thus; limits the form of treatment. We have devised a method to bend the Nickel Titanium wires to help in our inventory but also customized the wire according to the treatment.

Keywords: Customized, low force, nickel titanium


How to cite this article:
Chain S, Seth P, Rastogi N, Tan K, Gupta M, Singh R. Clinical bending of nickel titanium wires. J Indian Orthod Soc 2015;49:163-4

How to cite this URL:
Chain S, Seth P, Rastogi N, Tan K, Gupta M, Singh R. Clinical bending of nickel titanium wires. J Indian Orthod Soc [serial online] 2015 [cited 2019 May 19];49:163-4. Available from: http://www.jios.in/text.asp?2015/49/3/163/165565


  Introduction Top


Nickel titanium (NiTi) has always been a key toward orthodontic treatment. With, superelastic NiTi having- high springback, low stiffness, high stored energy, biocompatibility, environmental stability, and low surface friction; but lacking in formability. Since poor formability limits the ability to create variable arch forms, reverse curves of Spee, and exaggerated curves preformed archwires are generally used when NiTi is the material of choice. [1] NiTi wires are ideal in leveling and alignment due to low-force ratio to steel.

Nickel titanium can be formed by two methods:

  • By heat annealing, but takes away the springback
  • Direct electric resistance heat treatment [1] method, which is more effective, but is expensive and time-consuming.


This article describes a simple and cost-effective technique for bending NiTi wire chairside or in labs without losing its property of springback.


  Steps in Fabrication Top


Our armamentarium consisted of NiTi spool, light wire plier, weingart plier, and wire cutter.

The NiTi arch wire was formed by few easy steps. Points to be bended were marked onto the wire, light wire plier was then held on NiTi the marked wire and weingart plier was held on the other end of the wire [Figure 1]a.
Figure 1:

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The wire was bent toward/away and pulled [Figure 1]b, with a bit of force keeping in mind the original arch form. Stresses were created at the marked point where the light wire plier was held [Figure 1]b. The wire then changed its shape and gained its new shape due to this bending technique, with this technique, fabrication and formation of NiTi wires with respect to each case can be easily fabricated chairside.

E.g.: Intrusion Wires, lingual wires, customized archwire with 1 st order bend [Figure 2].
Figure 2: (a) Intrusion wires, lingual wires, customized arch wire with 1st order bend, (b) Intrusion wires

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  Conclusions Top


This is a simple and efficient method for bending NiTi wires. These wires have low force delivery; an ideal of the tooth movement during treatment. Clinical chair side formation of the wire helps us to carry out the treatment without delay and with customization of such wires. This article describes a simple and cost-effective technique for bending NiTi wire chairside or in labs without losing its property of springback. This method can be used to form various kinds of archwires, auxiliary archwires, and even lingual arch wire.

 
  References Top

1.
Miura F, Mogi M, Ohura Y. Japanese NiTi alloy wire: Use of the direct electric resistance heat treatment method. Eur J Orthod 1988;10:187-91.  Back to cited text no. 1
    


    Figures

  [Figure 1], [Figure 2]



 

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  In this article
Abstract
Introduction
Steps in Fabrication
Conclusions
References
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