Radiographs

Initial Panorama

Final Panorama

Initial Lateral

Final Lateral

Summary

Results achieved

• Aesthetic smile line was achieved
• Alignment of both arches through derotation
• Arch expansion achieved
• Arch form improved
• Arches aligned and coordinated
• Class I relationship achieved
• Curve of Spee leveled
• Functional overjet and overbite
• Harmonic arches were achieved
• Midlines coincident

Comments

• Initial alignment and leveling of the dentition to prepare for additional aligners Mandibular Advancement.
• First stage arch expansion to obtain space and alignment of anterior teeth. It can enhance the confidence and compliance of patient and their families.
• Although the patient is only 8 years old, he can wear aligners conscientiously, and the treatment effect is twice the result with half the effort.
• Expanding the arch also lays a good foundation for matching the shape of the upper and lower dental arches after Mandibular Advancement.
• The leveling of the Spee curve and the removal of anterior occlusal interference are also indispensable factors for the success of Mandibular Advancement.
• The COVID-19 did not affect the patients to wear aligners conscientiously.
• The treatment ended in less than two years after only one-time additional aligners.
• The patient and family were very satisfied with the treatment results.