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. 2015 Jun 11;10(6):e0130096. doi: 10.1371/journal.pone.0130096

Fig 4. The efficacy assessment of early treatment for Class III malocclusion versus late treatment.

Fig 4

The comparison was performed using five indices. 1: Angle SNA. The FM treatment group presented a greater increase in SNA than the controls (SMD = 1.09, 95% CI = -0.70–2.88, P = 0.23). 2: Angle SNB. The FM treatment group presented a greater decrease in SNB than the untreated controls (SMD = -1.42, 95% CI = -1.95–-0.90, P < 0.00001). 3: Angle ANB. The FM treatment group presented a greater increase in ANB than the controls (SMD = 1.72, 95% CI = -0.76–4.19, P = 0.17). 4: ANS-Me length. There were no significant differences in ANS-Me length between the early treatment group and the late treatment group (SMD = 0.50, 95% CI = -1.87–2.86, P = 0.68). 5: SN/GoGn angle. There were no significant differences in SN/GoGn angle between the early treatment group and the late treatment group (SMD = 0.5, 95% CI = -0.14–1.14, P = 0.13). 6: Co-Gn length. There were no significant differences in Co-Gn length between the early treatment group and the late treatment group (SMD = 2.94, 95% CI = -3.78–9.74, P = 0.4). The maxillary protraction effect of the two treatment groups was similar.