treatment effects of farmand functional appliance on class ii division 1 malocclusion

abstract background and aim: the aim of the present study was to evaluate the cephalometric changes in class ii division 1 mandibular deficient patients treated with farmand functional appliance.  methods and materials: twenty-seven subjects (17 girls and 10 boys) with the mean age of 11.1±1.4 years were involved in the present study. all the subjects were treated with farmand functional appliance. paired t-test and wilcoxon test were used to evaluate the data. the significance level was set at p<0.005. results: a skeletal class i relationship and a marked reduction in the overjet were achieved with the use of farmand appliance. anb decreased significantly by 3.2±1.7 degrees, while snb increased from 74.3 ±1.7 degrees to 77.6±2.3 degrees (p<0.001).  conclusion: the results showed that farmand functional appliance is effective in the treatment of mandibular deficiency in patients with class ii division 1 malocclusion.