Class I
,
Anterior crossbite
,
Midline shift
,
Crowding

First premolar extraction

Treatment information

  • Age: 18
  • Gender: female
  • Invisalign Treatment Option: Invisalign Full

Diagnostic Summary

  • Class I relationship
  • Anterior crossbite
  • Midline shift
  • Crowding

Use of:

  • First Premolar extraction
  • Multi-tooth unit first premolar extraction planned for maximum anchorage (G6) on Buccal 1.3 (UR3), Buccal 1.5 (UR5), Buccal 1.6 (UR6), Buccal 1.7 (UR7), Buccal 2.3 (UL3), Buccal 2.5 (UL5), Buccal 2.6 (UL6), Buccal 2.7 (UL7)
  • Power arm (G6) on Buccal 4.3 (LR3), Buccal 4.5 (LR5), Buccal 3.3 (LL3), Buccal 3.5 (LL5)
Courtesy of Dr Y. Song 2018
Award 2019 Peer Review Award

Photos

Click to compare enlarged
upper
Initial
lower
right
front
left
Click to compare enlarged
upper
Final
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
  • Anterior crossbite corrected
  • Normal¬† overjet and overbite achieved
  • Midlines coincident
  • Proper axial inclination of incisors
  • Arches aligned and coordinated
  • Aesthetic smile line¬†was achieved
  • All treatment goals were achieved case
  • Harmonic arches were achieved

Total treatment Time

  • 30 months

Number of aligners

  • Maxillary: 50 + 38 = 88
  • Mandibular: 59 + 25 = 84

Aligner wear time

  • Initial aligners 10 days and after the initial phase 1 week

Comments

  • We planned to extract all the first premolars to gain space for upper and lower incisors alignment and retraction
  • We used G6 SmartForce feature on upper arch, and G6 power arm feature on lower arch
  • With G6 SmartForce, maximum posterior anchorage and proper incisor inclination have been achieved