Class II div 1
,
Increased overjet
,
Mandibular retrognathia
,
Narrow arches

Mandibular advancement
,
Pre Mandibular advancement phase
,
Expansion
,
Retraction
,
Elastics: Class II
,
Elastics: Class II in Additional Aligners
Courtesy of Dr M. Wen, 2022
Before picture of treatment

Treatment Summary

Patient Information

  • Age: 11
  • Gender: male
  • Invisalign Submission Option: Invisalign Teen with MA

Total Treatment Time

  • 17 months

Number of aligners

  • Maxillary: 41 + 14 + 11 = 66
  • Mandibulary: 41 + 14 + 11 = 66

Aligner Wear time

  • 1-week

Retention

  • Maxillary: Hawley
  • Mandibular: Hawley

Results achieved

  • Class I relationship achieved
  • Functional canine guidance on both sides
  • Normal  overjet and overbite achieved
  • Significant improvement of overbite
  • Significant improvement of overjet
  • Midlines coincident
  • Curve of Spee leveled

Comments

  • Invisalign was used to expand both arches first(Pre-MA phase), and then the MA appliance was used for the mandible advancement.
  • The upper canine erupted during this time and the eruption guide within the aligners helped provide control.
  • After 2 refinements, we completed the premolars part, and corrected the midline by class II elastic traction and upper anterior teeth with minimal IPR(about 0.2-0.3mm) . Then, we placed Hawley retainers and clear retainers on both arches for maintaining.

Images

Initial and final

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lower
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front
left
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lower
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front
left

Progress

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InitialFinal
Before picture of treatment
After picture of treatment
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Radiographs

Initial Final
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