Class I
,
Anterior crossbite
,
Narrow arches
,
Crowding

Extrusion
,
Expansion
,
Phase I treatment / Interceptive
Courtesy of Dr C. Ying Tsai, 2020
Before picture of treatment

Treatment Summary

Patient Information

  • Age: 7
  • Gender: female
  • Invisalign Treatment Option: Invisalign First

Number of aligners

  • Maxillary: 24 + 27 = 51
  • Mandibulary: 22 + 27 = 49

Aligner Wear time

  • 10 days initially, 5 days in Additional Aligners.

Retention

  • Maxillary: Hawley
  • Mandibular: Hawley

Results achieved

  • Class I relationship maintained
  • Anterior crossbite corrected
  • NormalĀ  overjet and overbite achieved
  • Proper axial inclination of incisors
  • Arches aligned and coordinated
  • Alignment of both arches through derotation
  • Arch form improved
  • All treatment goals were achieved case

Comments

1. Simultaneous expansion at upper arch and molar move first sequential expansion at lower arch. Invisalign First is super effective for arch expansion.
2. The final result was no extra-space of lower arch. Well-aligned arch form and complete Leeway space were enough for full permanent dentition.
3. Anterior crossbite was corrected with aligners only.

Images

Initial and final

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upper
lower
right
front
left
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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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