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Invisalign European scientific symposium Part 2 class II. Episode 11. 23rd May 2020

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Hosted by
Farooq Ahmed

CONCLUSIONS FROM DISTALISATION (AND CLASS 2 ELASTICS) AND MANDIBULAR ADVANCEMENT (MA) 

  1. No significant changes in inclination upper or lower
  2. Mandibular growth enhanced 3-4mm
  3. No adverse vertical changes 

CRITIQUE:

  1. No controls
  2. No reporting on buccal segment movements

Skeletal and dentoalveolar effects produced by Aligners and Elastics in Class II growing patients Federico Migliori

WHO

  • 14 pts 13.6 years old
  • Co-Go-Me 125 – hypodivergent
  • Cervical spine C3

WHAT DID THEY DO IT

Invisalign protocols for distalisation

  • Sequential distalisation, ½ distalised, following tooth distalised – anchorage
  • Class 2 elastics

WHAT DID THEY FIND

  • Distalisation achieved in 15 months
  • Proclination of lowers did not occur IMPA: -2.2 – reduction
  • Vertical control proportions FMA -1.7
  • Co-Gn increased by 3mm

 

Correction of Class II malocclusion in growing patients with Aligners Dr. Simona Dianiskova

WHO

  • Age 12, OJ 4mm, ANB 3

WHAT DID THEY DO IT

  • De-rotate upper 1st molars – up to 2mm (85% of class 2 cases have rotated upper 1st molars)
  • Expansion – usually required
  • Distalisation -2.5mm predictable Simon 2014 87%
  • Class 2 from outset, no IPR
  • Overcorrect upper inc by 5 degrees of palatal root torque – prevent undertorquing
  • analysis dolphin – Mcnamama

WHAT DID THEY FIND

  • Duration of tx 16-21 months
  • Results no change ANB,
  • Co-Gn 4 – stat sign
  • Witts stat improve -1.8
  • Ui and lLi 1-2 degrees change
  • No vertical change FMA

 

Class II malocclusion treated with Invisalign with Mandibular advancement feature and twin block appliance compared with historical controls Dr. Sandra Tai

 

WHO

  • N32
  • Age 13

WHAT DID THEY DO IT

  • Outcome Ceph study

WHAT DID THEY FIND

  • SNB – stat sign for invisalign
  • Ui and Li procline 3.5 – stat sign t/b
  • No difference in vertical change both
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