Class II div 1, Posterior crossbite, Increased overjet, Mandibular retrognathia, Narrow arches, Asymmetric arches, Maxillary midline deviation, Crowding, Rotations
Leveling Curve of Spee
, Retraction
, First premolar extraction
, IPR
, Elastics: Class II
, Elastics: Class II in Additional Aligners
Courtesy of Dr H. Ji,
2021
Treatment Summary
Patient Information
- Age: 21
- Gender: male
- Invisalign Submission Option: Invisalign Full
Total Treatment Time
- 30 months
Number of aligners
- Maxillary: 46 + 18 + 26 = 90
- Mandibulary: 46 + 18 + 26 = 90
Aligner Wear time
- 2 weeks to 1 week
Retention
- Maxillary: Fixed/Bonded
- Mandibular: Fixed/Bonded
Results achieved
- Class II relationship maintained
- Functional canine guidance on both sides
- Posterior 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 scissor bite of 1.7 was corrected easily by only the aligner.
- During leveling the curve of Spee, the buccolingual inclination of lower incisors was improved properly.
- I think the inclination control of incisors by Invisalign is better than a fixed appliance.
- After space closure of upper extraction site, the axis of all upper teeth was aligned parallel.
- I strongly recommend the Invisalign system in case of bi-alveolar protrusion to be treated by extraction of 1st premolars.