Class II div 1
,
Increased overjet
,
Open bite
,
Narrow arches
,
Midline shift
,
Crowding
,
Rotations

Distalization
,
Extrusion
,
Intrusion
,
Expansion
,
IPR
,
Elastics: Class II
Courtesy of Dr. R. Lie, 2017
Before picture of treatment

Treatment Summary

Patient Information

  • Age: 27
  • Gender: female
  • Invisalign Treatment Option: Full

Total Treatment Time

  • 14 months

Number of aligners

  • Maxillary: 38 + 14 = 52
  • Mandibulary: 37 + 11 = 48

Aligner Wear time

  • 1-week

Retention

  • Maxillary: Vivera
  • Mandibular: Vivera

Results achieved

  • Class I relationship achieved
  • Normal overjet and overbite achieved
  • Significant improvement ofoverbite
  • Significant improvement of overjet
  • Midlines coincident
  • Proper axial inclination of incisors
  • Arches aligned and coordinated
  • Arch form improved
  • Aesthetic smile linewas achieved
  • All treatment goals were achieved case
  • Harmonic arches were achieved

Comments

  • The third molars were removed prior to commencement of treatment to eliminate the CO/CR discrepancy.
  • The Class II buccal relationship was corrected by sequential distalisation of the upper premolar and molar segments.
  • The anterior open bite was addressed through a combination of the intrusion of the posterior segments and relative extrusion of the upper anterior segments upon retraction after interproximal reduction (IPR) of the front teeth. Intrusion of the posterior segments was over-prescribed in order to obtain an over treatment effect.
  • Crowding of the anterior segments was achieved through staging of IPR to avoid unwanted or 'round-tripping' tooth movement.
  • The shaped of the arches was improved by expansion and rounding off.
    The patient was instructed to change aligner every 7 days during the whole treatment duration, and to wear heavy intra-oral Class II elastics during the distalisation stage.
  • Class II elastics was continued in the Refinement stage as a form of retention.

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

Initial Final
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