Class II div 1
,
Anterior crossbite
,
Edge to edge bite
,
Narrow arches
,
Asymmetric arches
,
Crowding
,
Rotations

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

Treatment information

  • Age: 24
  • Gender: female
  • Invisalign Treatment Option: Invisalign Full

Diagnostic Summary

  • Class II div 1
  • Anterior crossbite
  • Edge to edge bite
  • Narrow arches
  • Asymmetric arches
  • Crowding
  • Rotations

Use of:

  • Elastics: Class II
  • Elastics: Class III
  • Distalization
  • Extraction
  • Mesialization
  • Extrusion
  • Leveling Curve of Spee
  • Intrusion
  • Expansion
  • Retraction
  • Proclination
  • First Premolar extraction
  • IPR
  • Space Closure
  • Optimized rotation attachment (G3) on Buccal 3.4 (LL4), Buccal 3.5 (LL5)
  • Optimized extrusion attachment (G3) on Buccal 1.1 (UR1), Buccal 2.1 (UL1), Buccal 4.4 (LR4)
  • Power ridge feature (G3) on Buccal 3.1 (LL1)
  • Optimized Multi-plane (G4) on Buccal 1.2 (UR2), Buccal 2.2 (UL2)
  • Optimized root control attachments (G4) on Buccal 2.4 (UL4), Buccal 2.5 (UL5), Buccal 3.3 (LL3)
Courtesy of Dr. K. Fei Fong 2020

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

Treatment summary

Results Achieved

  • Class I relationship achieved
  • Class II relationship maintained
  • Functional canine guidance on both sides
  • Anterior crossbite corrected
  • Normal  overjet and overbite achieved
  • Deepbite improved
  • Overjet improved
  • Significant improvement of overbite
  • Significant improvement of overjet
  • 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

  • 21 months

Number of aligners

  • Maxillary: 57 + 11 + 15 = 83
  • Mandibular: 57 + 11 + 15 = 83

Aligner wear time

  • 1-week

Comments

  • On the left side, Class I occlusion was easy to achieve by using Align sequential distalization protocol
  • On the right side, distalization was more difficult because of the impacted third molar, therefore we decided to extract the tooth 1.4  to achieve Class II molar occlusion and relief upper right crowding
  • Class III elastics were used on the right side to help molar mesialization
  • We used Class II elastics on the right side to help posterior teeth distalization
  • This patients treatment went fairly easy because the Invisalign system can provide both stable anchorage and staging design which was very important for the final treatment results

Retention

  • Maxillary: Other clear
  • Mandibular: Other clear