Fig. 4From: Maxillofacial growth changes after maxillary protraction therapy in children with class III malocclusion: a dual control group retrospective studyComparison of active treatment changes and observation duration changes in the treated group *P < 0.05; **P < 0.01; ***P < 0.001.● represents TG difference (T1-T0); ▲ represents TG difference (T2-T1)Back to article page