Class II div 1
,
Posterior crossbite
,
Increased overjet
,
Mandibular retrognathia
,
Narrow arches
,
Asymmetric arches
,
Maxillary midline deviation
,
Crowding
,
Rotations

Leveling Curve of Spee
,
Retraction
,
First premolar extraction
,
IPR
,
Elastics: Class II
,
Elastics: Class II in Additional Aligners
Courtesy of Dr H. Ji, 2021
Before picture of treatment

Treatment Summary

Patient Information

  • Age: 21
  • Gender: male
  • Invisalign Treatment Option: Invisalign Full

Total Treatment Time

  • 30 months

Number of aligners

  • Maxillary: 46 + 18 + 26 = 90
  • Mandibulary: 46 + 18 + 26 = 90

Aligner Wear time

  • 2 weeks to 1 week

Retention

  • Maxillary: Fixed/Bonded
  • Mandibular: Fixed/Bonded

Results achieved

  • Class II relationship maintained
  • Functional canine guidance on both sides
  • Posterior crossbite corrected
  • Normal  overjet and overbite achieved
  • Overjet improved
  • Significant improvement of overjet
  • Midlines coincident
  • Proper axial inclination of incisors
  • Curve of Spee leveled
  • Arches aligned and coordinated
  • Alignment of both arches through derotation
  • Arch form improved
  • Aesthetic smile line was achieved 
  • All treatment goals were achieved case
  • Harmonic arches were achieved

Comments

  • The scissor bite of 1.7 was corrected easily by only the aligner.
  • During leveling the curve of Spee, the buccolingual inclination of lower incisors was improved properly.
  • I think the inclination control of incisors by Invisalign is better than a fixed appliance.
  • After space closure of upper extraction site, the axis of all upper teeth was aligned parallel.
  • I strongly recommend the Invisalign system in case of bi-alveolar protrusion to be treated by extraction of 1st premolars.

Images

Initial and final

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upper
lower
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front
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lower
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front
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Progress

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lower
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InitialFinal
Before picture of treatment
After picture of treatment
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Radiographs

Initial Final
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