Class I, Class II div 1, Anterior crossbite, Increased overjet, Narrow arches, Asymmetric arches, Maxillary midline deviation, Mandibular midline deviation, Midline shift, Crowding, Rotations
Mesialization
, Leveling Curve of Spee
, Intrusion
, Retraction
, First premolar extraction
, IPR
, Restorative
, Overtreatment
, Extraction
Courtesy of Dr W. Chi Chiu,
2021
Treatment Summary
Patient Information
- Age: 16
- Gender: female
- Invisalign Submission Option: Invisalign Teen
Total Treatment Time
- 24 months
Number of aligners
- Maxillary: 60 + 38 = 98
- Mandibulary: 60 + 38 = 98
Aligner Wear time
- 1-week
Retention
- Maxillary: Other clear
- Mandibular: Other clear
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
- This is a 4 premolars extraction with maximum anchorage to correct anterior procumbency and bimaxillary protrusion.
- Power arms were designed mesial and distal of the extraction sites for Class I elastics.
- Intrusion was planned over the lower anterior incisors to help level the curve of Spee and is also programmed over the lower molars to maintain vertical control.
- The facial change was dramatic after the treatment by extractions with maximum anchorage.
316 
310 
