Classe II div 1
,
Surplomb accru
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Rétrognathie mandibulaire
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Deep bite
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Arcades étroites
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Décalage de la ligne médiane mandibulaire

Avancée mandibulaire
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 Nivellement de la courbe de Spee
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Ingression
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Expansion
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Élastiques : Classe II
Courtesy of Dr J. Weng, 2021
Before picture of treatment

Treatment Summary

Patient Information

  • Age: 11
  • Gender: male
  • Invisalign Submission Option: Invisalign Teen with MA

Total Treatment Time

  • 18 mois

Nombre d'aligners

  • Maxillary: 35 + 40 = 75
  • Mandibulary: 35 + 40 = 75

Aligner Wear time

  • 1 semaine

Rétention

  • Maxillary: Other clear
  • Mandibular: Other clear

Results achieved

  • Relation de Classe I obtenue
  • Guidage fonctionnel des canines des deux côtés
  • Surplomb normal et recouvrement obtenu
  • Amélioration significative du recouvrement
  • Amélioration significative du surplomb
  • Inclinaison axiale correcte des incisives
  • Curve of Spee leveled
  • Arcades alignées et coordonnées
  • Forme de l'arcade améliorée
  • Ligne de sourire esthétique obtenue  
  • Cas dont les objectifs de traitement ont tous été atteints
  • Obtention d’arcades harmonieuses

Commentaires

I intended to use MA to correct Class II occlusion and guide the mandible forward at first, but the precision wings were broken frequently.
The patient wore 35# MA aligners, but Class II occlusion and deep bite still existed and the effect of upper arch expansion was not ideal. I think that MA is not good for upper arch expansion and Spee curve leveling. So I turned to MCC.

  • Three-dimensional adjustment on the upper and lower arches is very important in Class II occlusion.
  • Horizontally, I used aligners to expand the upper arch by 3mm per side.
  • Vertically, I used G5 to level the Spee curve and correct deep bite.
  • Sagitally, light force(3/16,3.5oz) Class II elastics were used to guide the mandible forward.

Images

Initial and final

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Le progrès

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DébutFinal
Before picture of treatment
After picture of treatment
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Radiographies

Début
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