Class II div 1
,
Increased overjet
,
Deep bite

Leveling curve of Spee
,
Intrusion
,
Retraction
,
First premolar extraction
Courtesy of Dr. H. Xu, 2019
Before picture of treatment

Treatment Summary

Patient Information

  • Age: 33
  • Gender: female
  • Invisalign Treatment Option: Invisalign Full

Total Treatment Time

  • 15 months

Number of aligners

  • Maxillary: 39 + 19 = 58
  • Mandibulary: 39 + 19 = 58

Aligner Wear time

  • 1-week

Retention

  • Maxillary: Other clear
  • Mandibular: Other clear

Results achieved

  • Functional canine guidance on both sides
  • Normal overjet and overbite achieved
  • Midlines coincident
  • Proper axial inclination of incisors
  • Curve of Spee leveled
  • Aesthetic smile linewas achieved
  • All treatment goals were achieved case
  • Harmonic arches were achieved

Comments

  • The condition of the patient's lower posterior teethindicated that this patient would benefit from occlusal restoration
  • We divided the orthodontic treatment into three steps:
  • Step 1: The extraction of 1.4,2.4, finishing the buccal occlusion in Class I canine relationship and Class II molar relationship, retracting the anterior teeth and improving lip protrusion.
  • Besides maintaining the height of the upper anterior teeth and intruding the lower anterior, to correct the deep bite of the anterior teeth.
  • Step 2: Establishing a normal overbite with posterior teeth occlusal restoration
  • Step 3: finalizing the treatment
  • Successes during this treatment
  • We closed the extraction spaces with the use of the maximum anchorage attachments utilizing the G6 protocol only, no Class II elastics, no micro-screw implant
  • Lower anterior teeth intrusion achieved which treated the overbite successfully within the initial aligner phase
  • Improvement points
  • There has been a significant loss of torque of the maxillary incisors in the initial aligner phase which we could solve with the use of power ridges in the Additional aligner phase
  • Posterior occlusal restoration could have been done better which resulted in a deeper bite then we planned. The patient lived in another city and this conflicted with the treatment plan.
  • Conclusion
  • This case provided us more confidence in the Invisalign G6 system
  • Overall treatment results are very satisfying

Images

Initial and final

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lower
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front
left
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lower
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front
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Progress

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InitialFinal
Before picture of treatment
After picture of treatment
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Radiographs

Initial Final
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