Class II div 2
,
Edge to edge bite
,
Narrow arches
,
Crowding
,
Rotations

Distalization
,
Extrusion
,
Intrusion
,
Proclination
,
IPR
,
TADs
,
Overtreatment
,
Elastics: Class II in Additional Aligners
Courtesy of Dr X. Lan, 2022
Before picture of treatment

Treatment Summary

Patient Information

  • Age: 33
  • Gender: female
  • Invisalign Treatment Option: Invisalign Teen

Total Treatment Time

  • 23 months

Number of aligners

  • Maxillary: 51 + 28 + 15 = 94
  • Mandibulary: 51 + 28 + 15 = 94

Aligner Wear time

  • 1-week

Retention

  • Maxillary: Other clear
  • Mandibular: Other clear

Results achieved

  • Class I relationship achieved
  • Functional canine guidance on both sides
  • Normal  overjet and overbite achieved
  • Overjet improved
  • Proper axial inclination of incisors
  • Arches aligned and coordinated
  • Arch form improved
  • Aesthetic smile line was achieved 
  • All treatment goals were achieved case

Comments

AP:

  • Distalization of lower molar and procline lower anteriors to get space to align lower teeth;
  • distalizaion upper molar to achieve Class Ⅰ and align anteriors;
  • since lower needs distalization, TADs were used to increase anchorage on A/B/C;
  • added LRT to get proper U incisors inclination;
  • IPR on lower to correct Bolton discrepancy and black triangle.

Vertical:

  • Intruding anterior and extruding posteriors to level curve of Spee;
  • extruding 1.2 to improve smile Arc.

Transverse:

  • Slightly expanding U&L arch to improve the width of the smile.

Staging:

  • Using Align Defalcult V-patter to distalization to get efficiency and efficiency balance;
  • adding LRT and procline U anteriors then intruding and traction to increase the predictability.

Images

Initial and final

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upper
lower
right
front
left
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upper
lower
right
front
left

Progress

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

Initial Final
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