Treatment of Skeletal Class II Malocclusion With Modified Twin-Block Appliance With Clear Plates
Study Details
Study Description
Brief Summary
Patients with skeletal class II malocclusion who have a retracted lower jaw will be treated in this study. The efficacy of clear Plates in the treatment of Skeletal Class II Malocclusion will be assessed. The skeletal, dental and soft tissues changes resulted by this intervention will be studied and compared with the results of Traditional treatment with fixed appliances.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
N/A |
Detailed Description
There are two group:
-
a group of patients in which participants will be undergo to Modified Twin-Block Appliance with Clear Plates.
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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
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: : 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. |
Device: 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: 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 |
Device: 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
|
Outcome Measures
Primary Outcome Measures
- Change in the SNA angle[ [: T0:1 day before the beginning of treatment . T1: when a normal overjet and canines class I relationships achieved (expected to be within 6-9 months in the exp. Group and control group)]
This angle the represents the position of the upper jaw in the cephalometric analysis in the anteroposterior direction. Lateral cephalograms will be taken and this angle is going to be measured in degrees.
- change in the SNB angle [ [: T0:1 day before the beginning of treatment . T1: when a normal overjet and canines class I relationships achieved (expected to be within 6-9 months in the exp. Group and control group)]
This angle the represents the position of the lower jaw in the cephalometric analysis in the anteroposterior direction. Lateral cephalograms will be taken and this angle is going to be measured in degrees.
- change in the mandibular length [T0: 1day before the beginning of treatment . T1: when a normal overjet and canines class I relationships achieved (expected to be within 6-9 months in the exp. Group and control group)]
Amount of distance measured from the Co point to Gn point in the cephalometric analysis. Lateral cephalograms will be taken and this angle is going to be measured in degrees.
- change in overjet [T0: 1 day before the beginning of treatment . T1: when a normal overjet and canines class I relationships achieved (expected to be within 6-9 months in the exp. Group and control group)]
Represents The distance between the most anterior point on the lower incisor to the most anterior point on the upper incisor in the cephalometric analysis.
- change in the vertical position of incisors [: T0: 1 day before the beginning of treatment . T1: when a normal overjet and canines class I relationships achieved (expected to be within 6-9 months in the exp. Group and control group)]
The vertical distance from the edge of the lower incisor to the mandibular plane.
Eligibility Criteria
Criteria
Inclusion Criteria:
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- Patients with mixed dentition at age 10.5-13 years.
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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.
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The patient is willing to accept treatment with a removable device.
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No previous orthodontic treatment
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the growth model is within the normal or horizontal maxillary opening angle of 30 >MM or angle of 400 > Björk
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patients do not have an upper alveolar dental protrusion.
Exclusion Criteria:
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-Patients with periodontal disease.
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patients with a neuromuscular disorder.
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patients of class I or III of malocclusion.
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Patients with temporomandibular joint disorder.
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Patients with Skeletal open bite.
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Patients with poor oral and gingival health
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the presence of a unilateral or bilateral posterior crossbite.
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patients who have upper jaw stenosis and need to be prepared by expansion before functional treatment.
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any patient who does not meet one or more of the Inclusion criteria will be removed from the study.
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Hama University | Hama | Syrian Arab Republic |
Sponsors and Collaborators
- Hama University
Investigators
- Study Director: Rabab Alsabbagh,, DDS MSc PhD, Professor of Orthodontics, University of Hama Dental School, Hama, Syria.
- Principal Investigator: ANAS FAKHOURI, Student in Orthodontics, University of Hama Dental School, Hama.
Study Documents (Full-Text)
None provided.More Information
Publications
- 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.
- Jung MH, Yang WS, Nahm DS. Maximum closing force of mentolabial muscles and type of malocclusion. Angle Orthod. 2010 Jan;80(1):72-9. doi: 10.2319/020509-78.1.
- 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.
- Hama University -Orthdontic.