Class II div 2
,
Increased overjet
,
Mandibular retrognathia
,
Deep bite
,
Narrow arches
,
Mandibular midline deviation
,
Midline shift
,
Crowding
,
Rotations
,
Pre-restorative

Distalization
,
Leveling curve of Spee
,
Extrusion
,
Intrusion
,
Expansion
,
Proclination
,
Other extraction
,
IPR
,
Elastics: Class II
Courtesy of Dr K. Fei Fong, 2021
Before picture of treatment

Treatment Summary

Patient Information

  • Age: 18
  • Gender: female
  • Invisalign Treatment Option: Invisalign Comprehensive

Total Treatment Time

  • 17 months

Number of aligners

  • Maxillary: 43 + 9 + 9 = 61
  • Mandibulary: 24 + 10 + 9 = 43

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
  • Deepbite improved
  • Overjet improved
  • Significant improvement of overbite
  • 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

1. This is a very severe deep bite Class II div 2 case.
2. 18 was extracted to ensure UR distalization could be performed smoothly.
3. Lower anterior intrusion was done successfully to level lower arch curve of spee to resolve deep bite problem. Sequential intrusion protocol was used to perform lower anterior intrusion.
4. 26 full zirconia crown was fabricated after aligner treatment.
5. Both upper and lower esthetic crown lengthening was performed to increase clinical crown for better smile pattern.

Images

Initial and final

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lower
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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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