Class I
,
Crowding

Retraction
,
First premolar extraction
,
Overtreatment
,
Elastics: Class II
Courtesy of Dr S. Zhang, 2022
Before picture of treatment

Treatment Summary

Patient Information

  • Age: 17
  • Gender: female
  • Invisalign Submission Option: Invisalign Full

Total Treatment Time

  • 24 months

Number of aligners

  • Maxillary: 54 + 9 = 63
  • Mandibulary: 54 + 12 = 66

Aligner Wear time

  • 10d

Retention

  • Maxillary: Hawley
  • Mandibular: Hawley

Results achieved

  • Class I relationship maintained
  • Functional canine guidance on both sides
  • Normal  overjet and overbite achieved
  • Midlines coincident
  • Proper axial inclination of incisors
  • Curve of Spee leveled
  • Arches aligned and coordinated
  • Aesthetic smile line was achieved 
  • All treatment goals were achieved case

Comments

  • This is a four first premolars extraction case that needed maximum anchorage in the upper arch.
  •  G6 was used in the upper arch and obtained satisfactory results.
  • Overcorrection was used to counter the pendulum effect during the retraction of anterior teeth.

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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