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.
There are two group: 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
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
32
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 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
Hama University
Hama, Syria
RECRUITINGChange in the SNA angle[
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.
Time frame: : 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)
change in the SNB angle [
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.
Time frame: : 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)
change in the mandibular length
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.
Time frame: 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)
change in overjet
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.
Time frame: 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)
change in the vertical position of incisors
The vertical distance from the edge of the lower incisor to the mandibular plane.
Time frame: : 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)
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