Anterior crossbite
,
Class II div 1
,
Narrow arches
,
Asymmetric arches
,
Mandibular midline deviation
,
Crowding
,
Rotations
,
Impacted canines

Elastics: Class II
,
Elastics: Class III
,
Distalization
,
Leveling curve of Spee
,
Extrusion
,
Intrusion
,
Retraction
,
First premolar extraction
,
Space Closure

Treatment information

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

Diagnostic Summary

  • Class II div 1
  • Anterior crossbite
  • Narrow arches
  • Asymmetric arches
  • Mandibular midline deviation
  • Crowding
  • Rotations
  • Impacted canines

Use of:

  • Distalization
  • Extrusion
  • Intrusion
  • Leveling Curve of Spee
  • Extraction
  • Retraction
  • First Premolar extraction
  • Space Closure
  • Elastics: Class II
  • Elastics: Class III
  • Optimized extrusion attachment (G3) on Buccal 2.2 (UL2)
  • Power ridge feature (G3) on Buccal 4.1 (LR1), Buccal 4.2 (LR2), Buccal 3.1 (LL1), Buccal 3.2 (LL2)
  • Optimized root control attachments (G4) on Buccal 2.1 (UL1), Buccal 4.4 (LR4), Buccal 3.4 (LL4)
Courtesy of Dr S. Chieh Lin 2019

Photos

Click to compare enlarged
upper
Initial
lower
right
front
left
Click to compare enlarged
upper
Final
lower
right
front
left
Click to compare enlarged
upper
Progress
lower
right
front
left

Radiographs

ClinCheck treatment plan

video anterior
video right-left
video upper-lower
Download ADF files
Initial
Additional Aligners

Treatment summary

Results Achieved

  • Class I relationship maintained
  • Class II relationship maintained
  • Functional canine guidance on both sides
  • Anterior crossbite corrected
  • Normal¬† overjet and overbite achieved
  • 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

Total treatment Time

  • 17 months

Number of aligners

  • Maxillary: 36 + 19 = 55
  • Mandibular: 50 + 15 = 65

Aligner wear time

  • 1-week

Comments

  • This was a very difficult extraction case of Class II subdivision with Class I molar over L't side and Class II molar over R't side
  • Severe crowding with canine block out
  • The Treatment plan is 1.5,2.4,3.5 extraction and pay attention to 3.3 during clinical monitoring due to unfavorable root axis
  • The patient was treated successfully within 17 months
  • Very good compliance

Retention

  • Maxillary:
  • Mandibular: