Objective: to compare the dentofacial effects of skeletally anchored Herbst appliance versus dentally anchored Twin Force Bite Corrector appliance to treat skeletal class ΙΙ young adult orthodontic patients. Materials and Methods: the current study was performed on 20 orthodontic Class II young adult patients with their age ranged between 16 and 20 years, divided into two groups; ten patients were treated by a Twin Force Bite Corrector appliance, while the other ten patients were treated by Herbst appliance anchored by two mini plates. Results: bycomparing the two groups regarding the amount of change in cephalometric measurements, there was no statistically significant difference between both groups except in IMPA, where the Herbst group recorded a statistically significant decrease (5.14%) (p=0.005). Also, a significantly higher percent increase was recorded in the Herbst group regarding soft tissue convexity angle (p=0.023), and a substantially higher percent decrease was recorded in the TFBC group regarding overjet (p=0.011). Conclusion: The skeletally anchored Herbst appliance and the dentally anchored Twin force bite corrector produce successful correction for class II malocclusion in young adult patients, but the Herbst appliance depends on its skeletal effect, which is expressed in significant soft tissue profile improvement. In contrast, the TFBC depends on its dentoalveolar effects.