Treatment of Skeletal Class III Malocclusion Using Orthodontic Removable Traction Appliance
NCT ID: NCT03172442
Last Updated: 2019-07-18
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
22 participants
INTERVENTIONAL
2017-05-01
2019-02-15
Brief Summary
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Detailed Description
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Despite of the efficiency of this extraoral appliance, its external appearance and its big size reduce patients' cooperation which decrease its clinical effects.
Another Class III treatment modality is the Orthodontic Removable Traction Appliance (ORTA). It is a removable appliance that can be used in conjunction with rapid palatal expansion or fixed appliances, It was developed in the 1980's by Dr. David Musich who developed this appliance in order to overcome issues of compliance that Dr. Musich experienced with use of the protraction facemask.
There is only one study that evaluated this appliance which is a retrospective study compared the treatment effects of the ORTA and protraction facemask in treatment of Class III malocclusions. However, this study has a lot of limitations which made it difficult to accurately evaluate the efficiency of this device.
The aim of this study is studying the dentoskeletal changes that result from treatment by this device, by comparing them to the changes in matched untreated group,by studying the cephalometric x-rays.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
NONE
Study Groups
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orthodontic removable traction appliance
Patients in this group will be treated using the orthodontic removable traction appliance (vacuum plate with two hooks between lateral incisor and canine in each side). An rapid maxillary expander will be applied to disarticulate maxillary sutures to allow more efficient forward protraction of the maxilla.
Class III elastic traction from upper first molar to the hook in both side. This appliance will be used full-time with Class III elastics (6- to 8-ounce) traction.
Vacuum plate
Vacuum plate with two hooks between lateral incisor and canine in each side will be applied on the lower arch.
Rapid maxillary expander
Rapid maxillary expander will be applied in the maxilla to disarticulate maxillary sutures to allow more efficient forward protraction of the maxilla.
Class III elastics
Class III elastic traction from upper first molar to the hook in both side will be applied.
Control group
without intervention
No interventions assigned to this group
Interventions
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Vacuum plate
Vacuum plate with two hooks between lateral incisor and canine in each side will be applied on the lower arch.
Rapid maxillary expander
Rapid maxillary expander will be applied in the maxilla to disarticulate maxillary sutures to allow more efficient forward protraction of the maxilla.
Class III elastics
Class III elastic traction from upper first molar to the hook in both side will be applied.
Eligibility Criteria
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Inclusion Criteria
* Skeletal class III caused by maxillary deficiency with or without mandibular prognathism judged clinically and confirmed radiographically(ANB≤1).
* Anterior crossbite on two teeth or more or an edge-to-edge bite.
* Normal inclination of the lower incisors with the mandibular plane.
Exclusion Criteria
* Previous orthodontic treatment.
* Patients with syndromes, clefts, or craniofacial abnormalities.
* Severe skeletal class III primarily resulting from mandibular prognathism (ANB less than - 4)
* Patients with facial asymmetry.
* Patients with vertical growth pattern.
8 Years
10 Years
ALL
No
Sponsors
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Damascus University
OTHER
Responsible Party
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Principal Investigators
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Ahmad S Burhan, PhD.
Role: STUDY_CHAIR
Department of Orthodontics, Faculty of Dentistry, Damascus University, Damascus, Syria
Locations
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Damascus University
Damascus, , Syria
Countries
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References
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Suda N, Ishii-Suzuki M, Hirose K, Hiyama S, Suzuki S, Kuroda T. Effective treatment plan for maxillary protraction: is the bone age useful to determine the treatment plan? Am J Orthod Dentofacial Orthop. 2000 Jul;118(1):55-62. doi: 10.1067/mod.2000.104491.
Cha KS. Skeletal changes of maxillary protraction in patients exhibiting skeletal class III malocclusion: a comparison of three skeletal maturation groups. Angle Orthod. 2003 Feb;73(1):26-35. doi: 10.1043/0003-3219(2003)0732.0.CO;2.
Mandall N, DiBiase A, Littlewood S, Nute S, Stivaros N, McDowall R, Shargill I, Worthington H, Cousley R, Dyer F, Mattick R, Doherty B. Is early Class III protraction facemask treatment effective? A multicentre, randomized, controlled trial: 15-month follow-up. J Orthod. 2010 Sep;37(3):149-61. doi: 10.1179/14653121043056.
Gautam P, Valiathan A, Adhikari R. Skeletal response to maxillary protraction with and without maxillary expansion: a finite element study. Am J Orthod Dentofacial Orthop. 2009 Jun;135(6):723-8. doi: 10.1016/j.ajodo.2007.06.016.
Turley PK. Orthopedic correction of Class III malocclusion with palatal expansion and custom protraction headgear. J Clin Orthod. 1988 May;22(5):314-25. No abstract available.
Other Identifiers
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UDDS-Ortho-03-2017
Identifier Type: -
Identifier Source: org_study_id
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