List of problems

• Mandibular deviation, asymmetry of upper dental arch. 
• Bimaxillary protrusio.
• Crowding of maxillary and mandibular teeth, malalignment.  
• Anterior crossbite, reverse deep bite.
• Mesial molar relationship. 
• Facial asymmetry.
• Midface depression, under full upper lip.
• Misalignment of upper and lower midline.

Treatment Objective

• Correct anterior crossbite, and align upper and lower teeth.

Orthodontic treatment plan

• Non-extraction correction. Align maxillary and mandibular teeth and maintain molar relationship via clear aligner without brackets, maxillary reduction and lip-side expansion of anterior teeth, lip-side expansion of right mandibular anterior teeth, expansion of middle segment of dental arch.
• Improve facial shape and align upper and lower midline.

Comparison before and after correction

Before correction

After correction

Before correction

After correction

Anterior crossbite

Basic situation

Product:Smartee Clear Aligner

Diagnosis:Angle Class I

Doctor:Xu Yebiao

Doctor's summary
1. Adding jaw pillow to the clear aligner plays an important role in correcting anterior crossbite.
2.Use of iris attachment smoothed the Curve of Spee.  
3.Addition of root control attachment achieved root control movement of 11 and 21.
Orthodontic treatment steps and cycle

Maxilla:28+8 sets

Mandible:20+6 sets

Cycle:18 months