|Year : 2016 | Volume
| Issue : 2 | Page : 126-127
Acrylic button: A clinical innovation in forsus fatigue resistance device
Murlidhar Radhakrishnan Sastri1, Ketan K Vakil2, Harshal Ashok Jain3
1 Professor, Department of Orthodontics, S.M.B.T. Dental College and Hospital, Sangamner, Maharashtra, India
2 Professor and Head, Department of Orthodontics, S.M.B.T. Dental College and Hospital, Sangamner, Maharashtra, India
3 PG Student, Department of Orthodontics, S.M.B.T. Dental College and Hospital, Sangamner, Maharashtra, India
|Date of Web Publication||8-Apr-2016|
Murlidhar Radhakrishnan Sastri
Department of Orthodontics, S.M.B.T. Dental College and Hospital, Amrutnagar, Sangamner - 422 608, Maharashtra
Source of Support: None, Conflict of Interest: None
Forsus fatigue resistance device*, a fixed functional appliance, is now most widely used for correction of Class II malocclusion. The common problem with this appliance is frequent debonding of mandibular canine brackets. The present article describes a simple, chairside fabrication of acrylic button which will ensure prevention of debonding of brackets.
Keywords: Class II malocclusion, Forsus appliance (fatigue resistance device)*, growth modulation
|How to cite this article:|
Sastri MR, Vakil KK, Jain HA. Acrylic button: A clinical innovation in forsus fatigue resistance device. J Indian Orthod Soc 2016;50:126-7
|How to cite this URL:|
Sastri MR, Vakil KK, Jain HA. Acrylic button: A clinical innovation in forsus fatigue resistance device. J Indian Orthod Soc [serial online] 2016 [cited 2019 May 25];50:126-7. Available from: http://www.jios.in/text.asp?2016/50/2/126/179954
| Introduction|| |
Class II malocclusion patients form a sizeable number treated by orthodontists. Mandibular retrusion is one of the most common etiology in the production of Class II malocclusion and treated by functional jaw orthopedics. Fixed functional appliances are popular for growth modification due to small and hygienic design, stable fixations, less breakages, and most importantly patient cooperation is not required, hence providing better results. The Forsus fatigue resistance device (FRD)* is an interarch hybrid fixed functional appliance used for correction of Class II malocclusion with retruded mandible, Class II subdivision and midline correction.
The most common problem upon installation of FRD appliance is the frequent debonding of the mandibular canine bracket. To ensure the prevention of debonding of the canine bracket we have devised an acrylic button.
| Acrylic Button Fabrication|| |
- Take 5 cm long 0.019 × 0.025 SS wire and apply separating medium upon it
- Mix the cold cure acrylic and form small beads when acrylic is in dough stage and insert into the wire before acrylic sets [Figure 1]
- Remove the beads as the acrylic is completely set and trim to dimension so as to not interfere in occlusion
- Insert the acrylic buttons in the final archwire before placement [Figure 2].
Acrylic buttons act as a breaking auxiliary to prevent the forces from directly acting on the canine brackets. The posterior surface of the button is in contact with the distolabial surface of mandibular canine that breaks the anterior force component and hence prevents debonding of brackets. There are commercially available beads as with Jasper Jumper appliance, but acrylic buttons can be easily made chairside with readily available materials in less time and can be cost effective. Various authors have designed loops in mandibular archwire to prevent the debonding of canine brackets, but it leads to increase in wire length and hence flexibility of wire increases which is undesirable. Hence, the acrylic button can be an effective solution for these shortcomings, and they also act as stops to prevent debonding of brackets (*3M Unitek, 2724 S., Peck Road, Monrovia, CA 91096, USA; www. 3Munitek.com).
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
| References|| |
Bos A, Hoogstraten J, Prahl-Andersen B. On the use of personality characteristics in predicting compliance in orthodontic practice. Am J Orthod Dentofacial Orthop 2003;123:568-70.
McSherry PF, Bradley H. Class II correction-reducing patient compliance: A review of the available techniques. J Orthod 2000;27:219-25.
Vogt W. The Forsus Fatigue Resistant Device. J Clin Orthod 2006;40:368-77.
Jasper JJ. The Jasper Jumper: A Fixed Functional Appliance. Sheboygan, Wisconsin: American Orthodontics; 1987.
[Figure 1], [Figure 2]