The condylar largest anteroposterior diameter and upper condylar height were longer in both Twin - block group [ ( 8.51 1.48 ) and ( 7.39 1.42 ) mm ] and Class II elastic group [ ( 8.44 1.03 ) and ( 7.24 0.89 ) mm ] than those in the control group [ ( 7.47 1.27 ) and ( 6.47 1.56 ) mm ] ( P < 0.05 ) .