In recent years, the skeletal anchorage through miniscrews has expanded the treatment options in orthodontics (Yamaguchi et al., 2012). We hereby present a modified method for tooth extrusion for cases where crown-lengthening surgery is contraindicated for aesthetic reasons. This modified method uses three orthodontic appliances: a mini-implant, an orthodontic wire, and a bracket. The aim of this case report was to increase the length of the clinical crown of a fractured tooth (tooth 23) by means of an orthodontic extrusion with the modified method of Roth and Diedrich.
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机译：近年来，通过微螺钉进行骨骼锚固扩大了正畸治疗的选择范围（Yamaguchi等，2012）。我们在此提出一种改良的牙齿挤压方法，用于出于美学原因而禁止加长牙冠的情况。这种改进的方法使用三种正畸矫治器：微型植入物，正畸钢丝和支架。该病例报告的目的是通过采用Roth and Diedrich改良方法的正畸挤压技术来增加骨折牙齿（23号牙齿）的临床牙冠长度。
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