Class III
,
Anterior crossbite
,
Mandibular midline deviation
,
Midline shift
,
Crowding
,
Rotations

Distalization
,
Mesialization
,
Leveling Curve of Spee
,
Intrusion
,
Expansion
,
Retraction
,
First premolar extraction
,
Space Closure
,
Overtreatment
,
Elastics: Class III
,
Extraction
Courtesy of Dr W. Chi Chiu, 2021
Before picture of treatment

Treatment Summary

Patient Information

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

Total Treatment Time

  • 20 months

Number of aligners

  • Maxillary: 49 + 31 = 80
  • Mandibulary: 49 + 31 = 80

Aligner Wear time

  • 1-week

Retention

  • Maxillary: Vivera retainer
  • Mandibular: Vivera retainer

Results achieved

  • Class I relationship achieved
  • Functional canine guidance on both sides
  • Anterior 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 Class III malocclusion was corrected by #44 extraction and LL segmental distalization. Extraction of #44 also helped with lower midline correction.
  • Class III elastics were worn to help with lower anterior retraction.
  • Upper and lower midlines are coincident with each other after canine class I was established.
  • This was initially a pre-surgical case; however, with the help of the features of the Invisalign system and patient's high compliance, the treatment was done orthodontically only.

Images

Initial and final

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upper
lower
right
front
left
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upper
lower
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front
left

Progress

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lower
right
front
left
InitialFinal
Before picture of treatment
After picture of treatment
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Radiographs

Initial Final
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