Ligature Coil Spring A Clinical Tip For Activation of FORSUS

Volume 7, Issue 4, April – 2022 International Journal of Innovative Science and Research Technology
ISSN No:-2456-2165
Ligature Coil Spring: A Clinical Tip for

Activation of FORSUS
Dr. Archana Singh, Dr. Kimi Mittal, Dr. Kamal Bajaj
Abstract:- In Orthodontics, we usually face a challenge problem in the growing age. Power scope and Forsus
to treat skeletal malocclusions. For treating skeletal Fatigue Resistant Device (FORSUS™) are commonly used
problems preferably in Class II skeletal pattern there are devices.
a variety of myofunctional and fixed functional
appliances available in the market and among these few Including all Class II correctors, the FORSUS™ has
gains quite well popularity with ease of treatment with beenaccepted to be the most comfortable for the patient and
desired results and patient’s co-operation. One of the exerts milder forces in comparison to other functional
appliance which is commonly used is Forsus Fatigue appliances, thus allowing the adaptation of the patient’s oral
Resistant Device (FORSUS™), it comes with its easy to musculature and dental changes2. Manufacturers provide
assemble parts and gives a great result. Here we tried to Forsus in multiple sizes according to the requirement;
solve a little problem with a simple hack for activation of consists ofpush rods, spring assembly, and L-pin. This
the appliance which we faced in our practice due to lost appliance is provided with the metallic crimps to
crimps that have come to activate the appliance. accordingly activate the appliance3.
I. INTRODUCTION It has been noticed that sometimes these crimps are lost
during the work, or is not sufficient to activate the appliance
In Orthodontics, skeletal Class II correction is a as per the need. So here we come with a simple clinical tip
challenge in both children and adults. to activate the FORSUS solely or with the combination of
crimps.
In1905, Emil Herbst introduced fixed functional
appliances for patients with temporomandibular joint  Design: ligature coil spring as the name describes is made
problems1.But with the advance in time, these appliances up of thick ligature wire (0.011”) and is very easy to
were more widely used for class II correction. There are a fabricate atthe chairside and saves time.
variety of functional appliances available to correct this
II. METHOD
 Armamentarium required are- ligature wire spool, ligature wire cutter, artery forceps, and the Forsus appliance kit (fig. 1A,1B)
Fig. 1A: Ligature wire spool, Ligature wire cutter, Artery forcep Fig.1B : FORSUS appliance tools
 A ligature coil spring is fabricated over the push rod of the appliance by using an artery forcep and both ends are tied together
and covered under the spring so it won’t pinch the patient. (fig. 2).
Fig. 2: Ligature coil spring over the push rod (Ligature coil spring in upper left corner)
IJISRT22APR897 www.ijisrt.com 436

ISSN No:-2456-2165
 All three parts of FORSUS were assembled with a ligature coil spring over the pushrod and placed in the patient’s mouth and
checked for activation. (Fig3A,3B,3C).
Fig. 3A: pre treatment
Fig. 3B: Insertion of FORSUS Fig 3C: Activation of FORSUS with

Ligature Coil spring
 A Good pleasant profile of the patient can be appreciated (Before and after placement of Forsusappliance)(Fig.4)
Fig. 4: Profile picture of the patient, Before and After FORSUS

Activation

ISSN No:-2456-2165
 Facial asymmetry correction after placement of Forsus appliance(Fig. 5).
Fig. 5: Before and After frontal photo of the patient.
III. DISCUSSION
Activation of Fixed Functional Appliance is sometimes

problematic if we lost the crimps and to activate with the
ligature coil spring seems easy and an effective alternative.
We have also come across different methods of
activation.We have tried multiple methods of activation with
acrylic beads or activation with rectangular wire,which can
be a little difficult to make appropriate spring around the
pushrod due to its thickness and stiffness and it also causes
discomfort to the patient due to impinging ends. On the
other hand, a thick ligature wire serves the purpose quite
effectively as it won’t distort during the process and is
moldable enough to make an accurate spring around the rod.
REFERENCES
[1.]Proffit WR, Fields HW, Moray LJ. Prevalence of

malocclusion and orthodontic treatment need in the
United States: estimates from the NHANES-III survey.
Int J Adult OrthodOrthogn Surg.1998;13:97–106.
[2.]Woodside DG, Metaxa A, Altuna G. the influence of
functional appliance therapy on glenoid fossa
remodeling. Am JOrthod Dentofacial Orthop
1987;92:181-198.
[3.]Vogt W. The Forsus fatigue resistant device. JCO 2006
Jun 40(6);368-77.
[4.]SUMIT YADAV, MADHUR UPADHYAY, K.
NAGARAJ, SAMEER PATIL, Tips for using Fixed
Functional Appliances. 2006 JCO. www.jco-online.com.

Ligature Coil Spring A Clinical Tip For Activation of FORSUS

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Volume 7, Issue 4, April – 2022 International Journal of Innovative Science and Research Technology

Ligature Coil Spring: A Clinical Tip for

IJISRT22APR897 www.ijisrt.com 436

Fig. 3A: pre treatment

Fig. 3B: Insertion of FORSUS Fig 3C: Activation of FORSUS with

Fig. 4: Profile picture of the patient, Before and After FORSUS

IJISRT22APR897 www.ijisrt.com 437

 Facial asymmetry correction after placement of Forsus appliance(Fig. 5).

Fig. 5: Before and After frontal photo of the patient.

Activation of Fixed Functional Appliance is sometimes

[1.]Proffit WR, Fields HW, Moray LJ. Prevalence of

IJISRT22APR897 www.ijisrt.com 438

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