安氏 II 类 1 分类
,
深覆盖
,
 下颌后缩
,
Deep bite
,
牙弓狭窄
,
下颌中线偏移

下颌前导功能
,
 平整 Spee 曲线
,
压低
,
扩弓
,
弹性牵引:安氏 II 类
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

  • 19个月

矫治器数量

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

Aligner Wear time

  • 1 周

保留

  • Maxillary: Other clear
  • Mandibular: Other clear

Results achieved

  • 达到安氏 I 类关系
  •  两侧的功能性尖牙引导
  • 实现正常覆盖和覆牙合
  •  显著改善覆牙合
  •  显著改善覆盖
  • 切牙达到合适的轴向倾斜
  • Curve of Spee leveled
  • 已对齐并协调牙弓
  • 已改善牙弓形状
  • 已获得美观的微笑线  
  • 已实现所有治疗目标
  • 实现牙弓协调

评论

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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进展

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初始状态治疗后
Before picture of treatment
After picture of treatment
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X光片

初始状态
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