Class I
,
Increased overjet
,
Deep bite
,
Narrow arches
,
Rotations
,
Spacing

Leveling curve of Spee
,
Intrusion
,
Expansion
,
IPR
Courtesy of Dr. Q. Chen, 2019
Before picture of treatment

Treatment Summary

Patient Information

  • Age: 36
  • Gender: male
  • Invisalign Treatment Option: Invisalign Full

Total Treatment Time

  • 19 months

Number of aligners

  • Maxillary: 40 + 25 + 13 = 78
  • Mandibulary: 40 + 25 + 13 = 78

Aligner Wear time

  • 1-week

Retention

  • Maxillary: Other clear
  • Mandibular: Other clear

Results achieved

  • Class I relationship achieved
  • Normal overjet and overbite achieved
  • Deepbite improved
  • Overjet improved
  • Curve of Spee leveled
  • Arch form improved
  • Aesthetic smile linewas achieved
  • Harmonic arches were achieved

Comments

  • A scissors bite is difficult to treat for all types of orthodontic appliances
  • We tried to successfully treat this case with aligners and used an experimental new way to open the bite while correcting the scissors bite of all 5 posterior teeth
  • We added attachments on the buccal cusps of all lower molars as a bite block to separate upper and lower arches
  • These attachments were never bonded on teeth
  • The result is quite satisfying and the occlusal relationship was great
  • The lower arch was well expanded and the scissors bite was fully corrected
  • All treatment goals were accomplished.

Images

Initial and final

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upper
lower
right
front
left
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upper
lower
right
front
left

Progress

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

Initial Final
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