Class II div 2
,
Mandibular retrognathia
,
Deep bite
,
Narrow arches

Mandibular advancement
,
Intrusion
Courtesy of Dr W. Chih Shih, 2023
Before picture of treatment

Treatment Summary

Patient Information

  • Age: 9
  • Gender: male
  • Invisalign Submission Option: Invisalign First

Total Treatment Time

  • 10 months

Number of aligners

  • Maxillary: 37
  • Mandibulary: 37

Retention

  • Maxillary: Hawley
  • Mandibular: Hawley

Results achieved

  • Class I relationship achieved
  • Deepbite improved
  • Curve of Spee leveled

Comments

  • In this case, I guided the advancement of the lower jaw through the use of an MA device.
  • During the treatment, I avoided retracting the position of the upper anterior teeth and prevented increasing the torque of central and lateral incisors.
  • Simultaneously, I intruded both the upper and lower anterior teeth to reduce any occlusal interference that could affect the forward movement of the chin.
  • Once the jaw position reached the treatment goal, I cut the wings of the aligner to reduce the side effects of posterior open bite that can result from MA treatment.

Images

Initial and final

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upper
lower
right
front
left
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upper
lower
right
front
left
InitialFinal
Before picture of treatment
After picture of treatment
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Radiographs

Initial Final
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