Class III, Anterior crossbite, Mandibular midline deviation, Midline shift, Crowding, Rotations
Distalization
, Mesialization
, Leveling Curve of Spee
, Intrusion
, Expansion
, Retraction
, First premolar extraction
, Space Closure
, Overtreatment
, Elastics: Class III
, Extraction
Courtesy of Dr W. Chi Chiu,
2021
Treatment Summary
Patient Information
- Age: 21
- Gender: male
- Invisalign Submission Option: Invisalign Comprehensive
Total Treatment Time
- 20 months
Number of aligners
- Maxillary: 49 + 31 = 80
- Mandibulary: 49 + 31 = 80
Aligner Wear time
- 1-week
Retention
- Maxillary: Vivera retainer
- Mandibular: Vivera retainer
Results achieved
- Class I relationship achieved
- Functional canine guidance on both sides
- Anterior crossbite corrected
- Normal overjet and overbite achieved
- Overjet improved
- 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
Comments
- The Class III malocclusion was corrected by #44 extraction and LL segmental distalization. Extraction of #44 also helped with lower midline correction.
- Class III elastics were worn to help with lower anterior retraction.
- Upper and lower midlines are coincident with each other after canine class I was established.
- This was initially a pre-surgical case; however, with the help of the features of the Invisalign system and patient's high compliance, the treatment was done orthodontically only.
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