Class II div 1
,
Narrow arches
,
Crowding
,
Rotations

Mesialization
,
Leveling Curve of Spee
,
Intrusion
,
Expansion
,
Retraction
,
First premolar extraction
,
IPR
,
Extraction
Courtesy of Dr Q. Chen, 2021
Before picture of treatment

Treatment Summary

Patient Information

  • Age: 26
  • Gender: female
  • Invisalign Treatment Option: Invisalign Comprehensive

Total Treatment Time

  • 18 months

Number of aligners

  • Maxillary: 36 + 19 + 11 = 66
  • Mandibulary: 36 + 19 + 21 = 76

Aligner Wear time

  • 1-week

Retention

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

Results achieved

  • Class II relationship maintained
  • Functional canine guidance on both sides
  • Normal  overjet and overbite achieved
  • Curve of Spee leveled
  • Aesthetic smile line was achieved 
  • All treatment goals were achieved case
  • Harmonic arches were achieved

Comments

  • This is a high-efficiency extraction case that was finished in 18 months.
  • The patient was away for work so the treatment was stopped for 10 months between the second and third MCC.
  • All aligners were used just for a week.
  • G6 system worked very well to achieve moderate anchorage and aligned the displaced upper canines in 36 weeks.
  • IPR was a necessary way to level the curve of Spee if a non-extraction plan was chosen in the lower arch.

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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