Class II div 2
,
Increased overjet
,
Mandibular retrognathia
,
Deep bite
,
Narrow arches
,
Mandibular midline deviation
,
Midline shift
,
Crowding
,
Rotations
,
Pre-restorative

Distalization

,

Leveling curve of Spee

,

Extrusion

,

Intrusion

,

Expansion

,

Proclination

,

Other extraction

,

IPR

,

Elastics: Class II

Courtesy of Dr K. Fei Fong, 2021

Treatment Summary

Patient Information

Age: 18
Gender: female
Invisalign Treatment Option: Invisalign Comprehensive

Total Treatment Time

17 months

Number of aligners

Maxillary: 43 + 9 + 9 = 61
Mandibulary: 24 + 10 + 9 = 43

Aligner Wear time

1-week

Retention

Maxillary: Other clear
Mandibular: Other clear

Results achieved

Class I relationship achieved
Functional canine guidance on both sides
Normal overjet and overbite achieved
Deepbite improved
Overjet improved
Significant improvement of overbite
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

1. This is a very severe deep bite Class II div 2 case.
2. 18 was extracted to ensure UR distalization could be performed smoothly.
3. Lower anterior intrusion was done successfully to level lower arch curve of spee to resolve deep bite problem. Sequential intrusion protocol was used to perform lower anterior intrusion.
4. 26 full zirconia crown was fabricated after aligner treatment.
5. Both upper and lower esthetic crown lengthening was performed to increase clinical crown for better smile pattern.