PMC8754267_01
Pretreatment and posttreatment lateral cephalogram
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F3
Cephalometric radiograph (Fig. 3) revealed CVMI stage 3 (considered suitable to give functional appliance).
Pretreatment and posttreatment OPG
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F4
OPG (Fig. 4) revealed permanent canines and premolars were in the erupting stage.
Pretreatment and posttreatment PA view
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F5
Intraoral photographs after alignment and leveling
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F6
After achieving the leveling and alignment within 6 months (Fig. 6) and transpalatal arch placed in the maxillary arch for reinforcement of anchorage. 0.019'' x 0.025'' stainless steel archwires were inserted after the figure of eight ligation from the first molar to the first molar in both arches and 20  of labial root torque was given in lower anteriors taking into account the slope of 10  with a 0.019'' x 0.025'' stainless steel archwire in 0.022'' slot.
Intraoral photographs with PowerScope application
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F7
A fixed functional class II corrector appliance, the PowerScope 2 was placed (Fig. 7) and differential loading of forces was done with more activation on the left side (flat side) by adding extra crimps to correct the lower dental midline deviation and improve the mandibular retrognathism and achieve class I relationship on both sides.
Intraoral photographs after mandibular advancement and PowerScope removal
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F8
After 6 months, the PowerScope 2 was removed (Fig. 8).
Hard tissue and soft tissue superimposition
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F9
Pretreatment and posttreatment cephalometric readings (Tables 1 to 4) were compared and superimpositions (Fig. 9) were made.
Posttreatment extraoral photographs
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F10
Improved facial profile with increased mandibular length achieved (Fig. 10).