Class III, Posterior crossbite, Mandibular retrognathia, Deep bite, Narrow arches, Asymmetric arches, Mandibular midline deviation, Midline shift, Crowding, Rotations
Leveling Curve of Spee
, Intrusion
, Expansion
, Retraction
, Proclination
, Lower incisor extraction
, First premolar extraction
, IPR
, Elastics: Class II
Courtesy of Dr. J. Xiao,
2019
Treatment Summary
Patient Information
- Age: 20
- Gender: female
- Invisalign Submission Option: Invisalign Full
Total Treatment Time
- 27 months
Number of aligners
- Maxillary: 56
- Mandibulary: 56
Aligner Wear time
- 2-weeks
Retention
- Maxillary: Other clear
- Mandibular: Other clear
Results achieved
- Class I relationship achieved
- Posterior crossbite corrected
- Normal overjet and overbite achieved
- Deepbite improved
- Proper axial inclination of incisors
- Curve of Spee leveled
- Arches aligned and coordinated
- Alignment of both arches through derotation
- Arch form improved
- Aesthetic smile linewas achieved
- All treatment goals were achieved case
- Harmonic arches were achieved
Comments
- This case was challenging because of the deep overbite with upper anterior retro-inclination and crowding
- The upper second premolars were extracted to resolve the crowding, and retraction for an improved profile
- We chose to extract lower fused tooth of 32/33 and mandibular bicuspid to bicuspid IPR
- Class II elastics were used in order to protect the maxillary anchorage and help to achieve the maxillary strongest anchorage
- The whole orthodontic process was smooth and successful with no need for additional aligners
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