Classe II Div 1
,
Aumento do trespasse horizontal
,
Retrognatismo mandibular
,
Deep bite
,
Arcos estreitos
,
Desviación de la línea media mandibular

Avanço mandibular
,
 Nivelación de la curva de Spee
,
Intrusão
,
Expansão
,
Elásticos: 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 meses

Número de alinhadores

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

Aligner Wear time

  • 1 semana

Retenção

  • Maxillary: Other clear
  • Mandibular: Other clear

Results achieved

  • Relação de Classe I obtida
  • Orientação canina funcional em ambos os lados
  • Trespasse horizontal normal e sobremordida obtida
  • Melhoria significativa da sobremordida
  • Melhoria significativa do trespasse horizontal
  • Inclinação axial adequada dos incisivos
  • Curve of Spee leveled
  • Arcos alinhados e coordenados
  • Forma de arco melhorada
  • A linha de sorriso estético foi alcançada  
  • Todos os objetivos de tratamento foram casos alcançados
  • Os arcos harmônicos foram alcançados

Comentários

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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Progresso

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InicialFinais
Before picture of treatment
After picture of treatment
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Radiografías

Inicial
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