PMC6885274_01
Case no. 1 facial photos, intraoral photos, panoramic radiograph, and lateral cephalogram at T0 (pretreatment).
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fig2
Due to decay, 7.4, 7.5, 8.4, and 8.5 were extracted (Figure 2).
Case no. 1 tracings (pretreatment).
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fig3
Case no. 1 facial photos, intraoral photos, panoramic radiograph, and lateral cephalogram at T1 (after PS3 treatment).
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fig4
A tendency to a Class III molar relationship was still present on the right side due to the lower first molar mesial shift because of the early extraction of deciduous molars (Figure 4).
Case no. 1 tracings at T1.
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fig5
Case no. 1 fixed appliance phase.
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fig6
The fixed appliance phase lasted 24 months as a consequence of the delayed time of 3.4 and 3.5 eruption (Figure 6).
Case no. 1 facial photos, intraoral photos, and lateral cephalogram at T2 (posttreatment).
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fig7
A straight nice profile with a good vertical proportion was also maintained after the pubertal growth spurt (Figure 7).
Case no. 1 tracings at T2.
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fig8
Case no. 1 tracing superimpositions.
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fig9
PMC6885274_02
Case no. 2 facial photos, intraoral photos, panoramic radiograph, and lateral cephalogram at T0 (pretreatment).
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fig10
A bilateral posterior crossbite was also present (Figure 10).
Case no. 2 tracings (pretreatment).
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fig11
The mandible morphology confirmed a severe structural hyperdivergency (Figure 11).
Case no. 2 facial photos, intraoral photos, panoramic radiograph, and lateral cephalogram at T1 (after PS3 treatment).
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fig12
A full Class II molar relationship was reached on the left side, while an edge-to-edge relationship was present on the right side (Figure 12).
Case no. 2 tracings at T1.
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fig13
The mandibular inclination decreased (Sn-GoGn from 43.7 to 39.5 degrees) (Figure 13).
Case no. 2 facial photos, intraoral photos, and lateral cephalogram at T2 (posttreatment).
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fig14
Case no. 2 tracings at T2.
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fig15
The mandibular inclination increased again to 41.3 degrees (Table 2), but considering the very severe hyperdivergent growth pattern, the final value should be considered as a quite favorable result (Figures 15 and 16).