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張明典
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張明典
Taiwan
Main Instructor Ming-Tien Chang
Min-Shi Tsai
Chi-Chun Tsai
Sheng-Yang Lee
Department / Institution Orthodontic Department of Wan-Fang Medical Center, Taipei, Taiwan
Classification Case report
  • ABSTRACT
  • TITLE
Objective
Clear aligner technique could treated scissors bite without bite plate or bite turbo. The treatment objectives were to resolve the incisors irregularities and left posterior scissors bite, while correcting the mandibular midline deviation and obtaining a Class I canine-to-molar relationship with normal overbite and overjet.

Case
A 39 year-old woman with convex facial profile, skeletal class II relationship and average mandibular plane angle. Intraoral conditions revealed large overjet and scissors bite on upper left second molar . Study cast analysis showed Angle’s Class II subdivision right malocclusion. De-crowding was planned to be improved by total distalization. After distalization and midline correction, Angle’s class I molar relationship were achieved, and large overjet was significantly improved. The patient had been treated for 45 months by Invisalign and ideal occlusal function and harmonious facial profile were achieved.

Discussion and summary
Clear aligner therapy has been widely applied to achieved ideal occlusal function and esthetic goal. For anchorage condition and individual tooth movement, we can simply use clear aligner to achieve arch expansion and distalization with intermaxllary elastic while correcting scissors bite simultaneously without making any unwanted movement.
Case Report: Angle’s Class I Malocclusion with Second Molar Scissors Bite Treated by Clear Aligner Technique.