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Clinical Pearl
6 (
); 119-120

Chain’s dual separator

Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dental Sciences, SEGi University, Selangor, Malaysia
Department of Orthodontics and Dentofacial Orthopedics, Chandra Dental College and Hospital, Barabanki, Uttar Pradesh, India
Department of Orthodontics and Dentofacial Orthopedics, Oxford Dental College and Hospital, Bommanahalli, Bengaluru, Karnataka, India
Department of Orthodontics and Dentofacial Orthopedics, Sardar Patel Dental College and Hospital, Lucknow, Uttar Pradesh, India
Address for Correspondence: Dr. Stephen Chain, Department of Orthodontics and Dentofacial Orthopedics, Chandra Dental College and Hospital, Safedabad, Barabanki - 225 001, Uttar Pradesh, India. E-mail:
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.
This article was originally published by Wolters Kluwer and was migrated to Scientific Scholar after the change of Publisher; therefore Scientific Scholar has no control over the quality or content of this article.

How to cite this article: Seth P, Chain S, Tan K, Chaudhri A. Chain’s dual separator. APOS Trends Orthod 2016;6:119-20.


Separation is necessary for the placement of bands on tooth. Sometimes, it is difficult in the placement and adjustment. This article provides a quick and easy method for separation of teeth with a single device and avoids many problems associated with other separators.




Bonding has become inevitable universal, though banding remains at peak for the control of the molars. Placement of the band requires proper separation. Ideally, orthodontic separators should provide adequate space without causing significant patient discomfort.[1] Currently, two separators are placed one placed mesially and one distally of the tooth, either of which can be inadvertently dislodged and potentially swallowed, aspirated, or submerged beneath the gingival.

We have developed the Chain’s dual separator,* which allows stabilization of the separator and the separation of both mesial and distal interdental spaces with little risk of dislodgment and harm.


  1. The use of 014” or 016” regular plus Australian stainless steel wire is used to fabricate the chain’s dual separator. A long wire is taken, and the helix is made of 3 mm diameter about 10 mm apart or the mesiodistal width of the molar. At both ends, a Kessling is made on the same wire [Figure 1]

  2. The wire is then bent at 90°. The bridge can be adjusted according to the desired mesiodistal width of the tooth [Figure 2]

  3. It is then inserted with the help of the helix with No 139 light wire plier as inserting a normal separator one side before another. The bridge is then pulled over the tooth on to the palatal/lingual side as to clear the cuspal interdigitation [Figure 3]

  4. The separator is removed in reverse with the removal of the palatal over the occlusal and then each side.

Figure 1: Helix of 3 mm is made of 10 mm apart and two Kessling are made on both ends of 10 mm
Figure 2: Both sides of the wire are bent at equal 90°
Figure 3: Finished appliance inserted on the tooth


The separator is the first step in orthodontics. The separation is essential of the banding of any tooth. Single separator usually gets displaced and looses its function. Making this separator with a single wire and with helix and without any sharp bends adds to the flexibility of the separator, and Australian wire is susceptible to breakage on sharp bends. The flexibility allows easy insertion and removal of the separator. This dual separator stabilizes each other and thus makes the separation more efficient and prevents injury to the patient. A preformed stock can be kept for the patient; only a minor adjustment to the tooth size is required before the use of the separator. This can be made for premolars also.

Financial support and sponsorship


Conflicts of interest

There are no conflicts of interest.


  1. , , . Separation effect and perception of pain and discomfort from two types of orthodontic separators. World J Orthod. 2004;5:172-6.
    [Google Scholar]

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