Treatment Summary
Patient Information
- Age: 16
- Gender: female
- Invisalign Submission Option: Invisalign Full
Total Treatment Time
- 24个月
矫治器数量
- Maxillary: 52 + 23 = 75
- Mandibulary: 52 + 23 = 75
Aligner Wear time
- 7-14 days
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
- 后牙反牙合已矫正
- 实现正常覆盖和覆牙合
- 显著改善覆牙合
- 显著改善覆盖
- 中线对齐
- 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
- This difficult class II div 1 case with severe deep bite, asymmetrical & constricted arches was treated successfully in 24 months with excellent results.
- Extraction: 1.4, 2.4, 3.8 & 4.8.
- The lingual crown torque of upper posterior teeth and hyper-erupted teeth made it impossible to place buccal attachments on the lower teeth.
- Lingual conventional attachments (Rectangular & Ovoid) were utilized to control the movement of the lower teeth & to improve retention of aligners.
- At stage 10: Buttons were bonded at the mesiobuccal side of 3.6 & 4.6 after some intrusion & buccal crown torque of 2.6 were achieved.
- Class II elastics (4.5oz 1/4") on both sides applied from U3 Hooks to Buttons on L6.
- Tooth 4.5 (Lingual Ovoid) became intruded & off tracked during stages 15-20. The lingual attachment was removed.
- As the expansion at the lower right side was a lot more than the lower left, sequential expansion of lower right posterior teeth was performed first to improve the predictability of asymmetrical expansion.
- To assist correction of lower midline (2mm to left) from stage 45 onward: Right class III elastic + anterior elastic + left class II elastic.
- At stage 49, Buttons were placed at 4.5(B), Cleat at 4.4(L) & 4.5(L) for application of force couple to derotate 4.5 and extrusion of 4.5. Button was also placed at 3.5(B) & 2.6(B) for vertical elastic.
- Additional aligners were utilized to flatten the Curve of Spee, create a nice smile arc, get coincident midlines and finalize the occlusion.
- The lower 2nd molars were moved successfully despite only partial coverage by aligners throughout the whole treatment!
- The keys to success for this difficult case were correct diagnosis & ClinCheck planning. and good patient compliance!
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