الفهرس 
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Abstract
The present study was conducted to evaluate the modified Twin Block in treatment of class II division 1 malocclusion. The sample of this study consisted of 15 girls with an age range of 8-11 years, and divided into two groups, 5 patients in group 1( control group), and 10 patients in group 2(treatment). In the treatment group all patients had class II division 1 maloclusion. The treatment group used the Modified Twin Block appliance for 6 month and the control group was followed also for 6 month.