Download Easy Way for Cinching of NiTi Wires

JIOS
Easy Way for Cinching of NiTi Wires
10.5005/jp-journals-10021-1234
Clinical innovation
Easy Way for Cinching of NiTi Wires
1
S Chetan, 2Pooja Chavan
ABSTRACT
An easy, fast, and effective method to cinch NiTi wire is
suggested.
Keywords: Cinching, NiTi wire, Distal end.
How to cite this article: Chetan S, Chavan P. Easy Way for
Cinching of NiTi Wires. J Ind Orthod Soc 2014;48(2):141-142.
Source of support: Nil
Conflict of interest: None
Received on: 7/2/13
Accepted after Revision: 8/6/13
Introduction
Cinching of NiTi wires cannot be done as with stainless steel
wires due to its property of shape memory.
Cinching NiTi wires is more often an intricate and
arduous procedure. Usual procedure involves inserting the
archwire into the slot, marking it at the distal end of the molar
tube and then retrieving it from the oral cavity. The part distal
to the marking is heated and the wire is reinserted in the slot
followed by cinching, thus making it mandatory to remove
the NiTi archwire from the patient’s mouth to cinch it.
An easy, fast, and effective method to cinch NiTi wire
is presented, based on simple basic principle that, when a
sharp bend is given in NiTi wires, it loses its property of
shape memory. This principle is similar to that used by NiTi
cinching pliers.
Fig. 1: NiTi wire approximately 1 cm excess distal to molar tube
Fig. 2: Holding the wire at distal most part with Weingart plier
and pull it in gingival and mesial direction-yellow arrow
Methodology
This method has been used by the authors for the last couple
of years and has proved successful.
1,2
Assistant Professor
1
Department of Orthodontics, College of Dental Sciences
Devangere, Karnataka, India
2
Department of Orthodontics, KLE VK Institute of Dental
Sciences, Belgaum, Karnataka, India
Corresponding Author: S Chetan, Assistant Professor
Department of Orthodontics, College of Dental Sciences
Devangere, Karnataka, India, Phone: 9986971863, e-mail:
[email protected]
The Journal of Indian Orthodontic Society, April-June 2014;48(2):141-142
Fig. 3: Bending with Weingart plier
141
S Chetan, Pooja Chavan
Fig. 4: Black arrows—bends which wave come from bending
and yellow arrows—to cut between bends
The procedures are as follows:
1. Place the NiTi wire with approximately 1cm excess distal
to molar tube (Fig. 1).
2. Hold the wire at distal most part with Weingart plier
(Fig. 2) and pull the wire in gingival and mesial direction
(Yellow arrows—Figs 2 and 3) forcefully.
By doing this, two bends will come in wire: one at distal
end of molar tube and other around 5 mm away from it (Black
arrows—Fig. 4). These bends will be at almost 90° to each
other.
3. Cut the wire between these bends (Yellow arrows—Figs
4 and 5).
142
Fig. 5: After cutting—cinched NiTi wire
CONCLUSION
The method presented to bend the NiTi wire is very simple,
effective and less time consuming and compared to the
conventional way of bending clinching NiTi wires.
Points to be kept in Mind
• This method cannot be used when using bondable tubes
as force excreted on tubes while bending may debond
them.
• Difficult to cinch when second molars are banded as in
most cases there will be very little space distal to it.