Cope J B, Buschang P H, Cope D D, Parker J, Blackwood H O
Baylor College of Dentistry, Dallas, Texas 75246.
Angle Orthod. 1994;64(2):113-22. doi: 10.1043/0003-3219(1994)064<0113:QEOCCW>2.0.CO;2.
Although the Jasper Jumper is becoming a widely accepted orthodontic appliance, no quantitative guidelines exist for therapy. The purpose of this investigation was to describe the orthopedic and orthodontic changes associated with Jasper Jumper therapy. A sample of 31 consecutively treated Class II patients was collected from three orthodontic practitioners who were using the same procedures and methods. Lateral cephalograms were taken immediately before appliance placement and immediately after appliance removal (mean interval of 0.4 years). The sample was case matched to untreated controls based on age, sex, and mandibular plane angle. The cephalograms were superimposed using anterior cranial base, maxillary, and mandibular reference structures to distinguish between growth/displacement and tooth movement. The results show that the majority of Class II correction was due to dental, rather than skeletal change. The maxilla underwent significant posterior displacement. The maxillary incisors retroclined and the maxillary molars tipped distally. Clockwise or backwards rotation was evident for the mandible. The mandibular incisors proclined significantly and the mandibular molars translated and tipped mesially. Jasper Jumper therapy is a valuable procedure for the correction of Class II dental malocclusions. Like all other treatment modalities, there are both indications and contraindications for its use.
尽管贾斯珀跳跃矫治器正成为一种被广泛接受的正畸矫治器，但目前尚无治疗的定量指南。本研究的目的是描述与贾斯珀跳跃矫治器治疗相关的矫形和正畸变化。从三位采用相同程序和方法的正畸医生那里收集了31例连续接受治疗的安氏II类患者样本。在矫治器放置前和去除后立即拍摄头颅侧位片（平均间隔0.4年）。根据年龄、性别和下颌平面角将样本与未经治疗的对照进行病例匹配。使用前颅底、上颌和下颌参考结构对头颅侧位片进行叠加，以区分生长/移位和牙齿移动。结果表明，大多数安氏II类错牙合的矫治是由于牙齿变化，而非骨骼变化。上颌发生了明显的向后移位。上颌切牙舌倾，上颌磨牙远中倾斜。下颌出现顺时针或向后旋转。下颌切牙明显唇倾，下颌磨牙近中平移并倾斜。贾斯珀跳跃矫治器治疗是矫治安氏II类牙性错牙合的一种有效方法。与所有其他治疗方式一样，其使用也有适应证和禁忌证。
