Introduction: Considering the positive effects of a low-level laser on new bone formation, we aimed to investigate in treatment patients with class II mandibular deficiency treated Farmand functional appliance. Methods: Twenty-two growing aged 10-14 years were randomly divided into "Farmand" and "Farmand+Laser" groups. All Patients "Farmand+laser" group exposed irradiation (980 nm, 100 mw, 4 po...
