Class II div 1
,
Increased overjet
,
Openbite
,
Narrow arches
,
Posterior crossbite
,
Maxillary midline deviation
,
Mandibular midline deviation
,
Midline shift
,
Crowding
,
Rotations

Mesialization
,
Retraction
,
First premolar extraction

Treatment in the Spotlight

Dr. M. Kubota
Dr. M. Kubota

We would like to thank Dr. Kubota for submitting this great example of a premolar extraction case with the use of Optimized G6 First premolar extraction solution for maximum anchorage SmartFroce features.

Dr. Quote: "I'm very happy that the Invisalign treatment with premolar extraction has been very successful in such a complex and difficult case. "

Treatment information

  • Age: 22
  • Gender: female
  • Invisalign Treatment Option: Invisalign Full

Diagnostic Summary

  • Class II div 1
  • Increased overjet
  • Openbite
  • Narrow arches
  • Posterior crossbite
  • Maxillary midline deviation
  • Mandibular midline deviation
  • Midline shift
  • Crowding
  • Rotations

Use of:

  • Mesialization
  • Retraction
  • First Premolar extraction
  • Optimized rotation attachment (G3) on Buccal 4.3 (LR3)
  • Power ridge feature (G3) on Buccal 4.1 (LR1), Buccal 3.1 (LL1)
  • Optimized root control attachments (G4) on Buccal 1.3 (UR3), Buccal 1.5 (UR5), Buccal 2.3 (UL3), Buccal 3.3 (LL3), Buccal 3.5 (LL5)
  • Precision bite ramp (G5) on Lingual 1.2 (UR2), Lingual 2.2 (UL2)
  • First premolar extraction solution for maximum anchorage (G6) on Buccal 2.5 (UL5), Buccal 2.6 (UL6), Buccal 2.7 (UL7)
Courtesy of Dr. M. Kubota 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 achieved
  • Posterior crossbite corrected
  • Normal¬† overjet and overbite achieved
  • Significant improvement of overjet
  • Midlines coincident
  • Aesthetic smile line¬†was achieved
  • All treatment goals were achieved case
  • Harmonic arches were achieved

Total treatment Time

  • 26 months

Number of aligners

  • Maxillary: 67 + 10 = 77
  • Mandibular: 67 + 10 = 77

Aligner wear time

  • 8 days

Comments

  • Sequential movement during space closure was effective to prevent any undesirable molar tipping
  • Bite ramps were used to prevent anterior occlusal interference.
  • Short Class II elastics were used to obtain Class I molar relation

Retention

  • Maxillary: Other clear
  • Mandibular: Other clear