Treatment of Skeletal Class II Malocclusion With Modified Twin-Block Appliance With Clear Plates
NCT ID: NCT05950581
Last Updated: 2025-09-15
Study Results
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Basic Information
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RECRUITING
NA
32 participants
INTERVENTIONAL
2026-03-15
2026-09-15
Brief Summary
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Detailed Description
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1. a group of patients in which participants will be undergo to Modified Twin-Block Appliance with Clear Plates.
2. a group of patients in which participants will be undergo to the traditional Twin-Block Appliance.
phase Intervention/treatment Condition or disease
Not applicable Other:
Modified Twin-Block Appliance with Clear Plates.
Other:
Traditional Twin-Block Appliance. Skeletal class II Malocclusion
Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
SINGLE
Study Groups
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: Modified Twin-Block Appliance with Clear Plates.
Clear plates technique A group of patients in which participants will be undergo to clear plates treatment will be applied to the upper and lower arch 17 hours daily Experimental : Modified Twin-Block Appliance with Clear Plates.
Modified Twin-Block Appliance with Clear Plates.
Clear plates technique A group of patients in which participants will be undergo to clear plates treatment will be applied to the upper and lower arch 17 hours daily
Traditional Twin-Block appliance
Traditional Twin-Block appliance A group of patients in which participants will undergo to the Traditional Twin-Block appliance Treatment, appliances will be applied to the upper and lower arch 17 hours daily
Traditional Twin-Block appliance
Traditional Twin-Block appliance A group of patients in which participants will undergo to the Traditional Twin-Block appliance Treatment, appliances will be applied to the upper and lower arch 17 hours daily
Interventions
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Modified Twin-Block Appliance with Clear Plates.
Clear plates technique A group of patients in which participants will be undergo to clear plates treatment will be applied to the upper and lower arch 17 hours daily
Traditional Twin-Block appliance
Traditional Twin-Block appliance A group of patients in which participants will undergo to the Traditional Twin-Block appliance Treatment, appliances will be applied to the upper and lower arch 17 hours daily
Eligibility Criteria
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Inclusion Criteria
* The patient has Skeletal class II malocclusion caused by mandibular retraction ANB \> 5, 8 mm \>O.J\> 5 mm, SNB\<78, angle (NSAr) ≥ ° 125 and normal placement of the upper jaw.
* The patient is willing to accept treatment with a removable device.
* No previous orthodontic treatment
* the growth model is within the normal or horizontal maxillary opening angle of 30 \>MM or angle of 400 \> Björk
* patients do not have an upper alveolar dental protrusion.
Exclusion Criteria
* patients with a neuromuscular disorder.
* patients of class I or III of malocclusion.
* Patients with temporomandibular joint disorder.
* Patients with Skeletal open bite.
* Patients with poor oral and gingival health
* the presence of a unilateral or bilateral posterior crossbite.
* patients who have upper jaw stenosis and need to be prepared by expansion before functional treatment.
10 Years
13 Years
ALL
No
Sponsors
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Hama University
OTHER
Responsible Party
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Principal Investigators
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Rabab Alsabbagh,, DDS MSc PhD
Role: STUDY_DIRECTOR
Professor of Orthodontics, University of Hama Dental School, Hama, Syria.
ANAS FAKHOURI
Role: PRINCIPAL_INVESTIGATOR
Student in Orthodontics, University of Hama Dental School, Hama.
Locations
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Hama University
Hama, , Syria
Countries
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Central Contacts
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Facility Contacts
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References
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Buschang PH, Stroud J, Alexander RG. Differences in dental arch morphology among adult females with untreated Class I and Class II malocclusion. Eur J Orthod. 1994 Feb;16(1):47-52. doi: 10.1093/ejo/16.1.47.
Clark WJ. The twin block technique. A functional orthopedic appliance system. Am J Orthod Dentofacial Orthop. 1988 Jan;93(1):1-18. doi: 10.1016/0889-5406(88)90188-6. No abstract available.
Cozza P, Baccetti T, Franchi L, De Toffol L, McNamara JA Jr. Mandibular changes produced by functional appliances in Class II malocclusion: a systematic review. Am J Orthod Dentofacial Orthop. 2006 May;129(5):599.e1-12; discussion e1-6. doi: 10.1016/j.ajodo.2005.11.010.
de Lira Ade L, de Moura WL, Artese F, Bittencourt MA, Nojima LI. Surgical prediction of skeletal and soft tissue changes in treatment of Class II. J Craniomaxillofac Surg. 2013 Apr;41(3):198-203. doi: 10.1016/j.jcms.2012.07.009. Epub 2012 Nov 30.
Fritz JD, Utz AL, Hale NM, Wu L, Powers AC, Verdoorn TA, Robertson D. Gene-based neurotransmitter modulation in cerebellar granule neurons. J Neurochem. 1997 Jan;68(1):204-12. doi: 10.1046/j.1471-4159.1997.68010204.x.
Trenouth MJ. Cephalometric evaluation of the Twin-block appliance in the treatment of Class II Division 1 malocclusion with matched normative growth data. Am J Orthod Dentofacial Orthop. 2000 Jan;117(1):54-9. doi: 10.1016/s0889-5406(00)70248-4.
Tulloch JF, Medland W, Tuncay OC. Methods used to evaluate growth modification in Class II malocclusion. Am J Orthod Dentofacial Orthop. 1990 Oct;98(4):340-7. doi: 10.1016/S0889-5406(05)81491-X.
Other Identifiers
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Hama University -Orthdontic.
Identifier Type: -
Identifier Source: org_study_id
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