Cephalometric evaluation in different phases of Jasper jumper therapy
Cephalometric evaluation in different phases of Jasper jumper therapy
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DOI：
10.1016/j.ajodo.2011.03.018
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发表时间：
2011-08-01
影响因子：
3
通讯作者：
Salvatore de Freitas, Karina Maria
中科院分区：
文献类型：
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作者：
Herrera, Francyle Simoes;Castanha Henriques, Jose Fernando;Salvatore de Freitas, Karina Maria
简介：本研究的目的是评估在不同治疗阶段使用 Jasper 跳线和 II 类松紧带治疗 II 类错牙合畸形的牙骨骼和软组织效果。方法：样本包括 24 名男女患者（11 名男孩，13 名女孩），初始年龄为 12.58 岁，平均治疗时间为 2.15 年。每位患者在正畸治疗的这些阶段获得了四张侧位头像片：治疗前（T1）、调平和对齐后（T2）、使用 Jasper Jumper 矫治器后和使用 II 类颌间弹性材料前（T3）以及治疗后（T4）。因此，可以评估 3 个治疗阶段：调平和对齐 (T1-T2)、Jasper 跳线的使用 (T2-T3) 以及 II 类松紧带的使用 (T3-T4)。使用方差分析 (ANOVA) 和 Tukey 检验来比较 3 个治疗阶段的持续时间以及 4 个治疗阶段的组内比较。结果：对齐阶段显示了上颌切牙的前后关系、前突和唇倾斜的矫正以及覆咬合的减少。 Jasper跳跃阶段表现出下颌切牙的唇倾斜、前突和侵入、下颌磨牙的近中化和挤出、覆牙合和覆牙合的减少、磨牙关系的改善以及面部凸度的减少。 II 类弹性相显示上颌切牙唇侧倾斜；下颌切牙后缩、直立和伸出；覆牙合和覆牙合增加。结论：使用 Jasper Jumper 矫治器矫正了最大量的 II 类错牙合畸形前后位差异。在使用 Jasper Jumper 矫治器后使用 II 级颌间弹性材料期间，部分矫正丢失。 （Am J Orthod Dentofacial Orthop 2011；140：e77-e84）
Introduction: The aim of this study was to evaluate the dentoskeletal and soft-tissue effects of Class II malocclusion treatment with the Jasper jumper followed by Class II elastics at the different stages of therapy. Methods: The sample comprised 24 patients of both sexes (11 boys, 13 girls) with an initial age of 12.58 years, treated for a mean period of 2.15 years. Four lateral cephalograms were obtained of each patient in these stages of orthodontic treatment: at pretreatment (T1), after leveling and alignment (T2), after the use of the Jasper jumper appliance and before the use of Class II intermaxillary elastics (T3), and at posttreatment (T4). Thus, 3 treatment phases could be evaluated: leveling and alignment (T1-T2), use of the Jasper jumper (T2-T3), and use of Class II elastics (T3-T4). Dependent analysis of variance (ANOVA) and Tukey tests were used to compare the durations of the 3 treatment phases and for intragroup comparisons of the 4 treatment stages. Results: The alignment phase showed correction of the anteroposterior relationship, protrusion and labial inclination of the maxillary incisors, and reduction of overbite. The Jasper jumper phase demonstrated labial inclination, protrusion and intrusion of the mandibular incisors, mesialization and extrusion of the mandibular molars, reduction of overjet and overbite, molar relationship improvement, and reduction in facial convexity. The Class II elastics phase showed labial inclination of the maxillary incisors; retrusion, uprighting, and extrusion of the mandibular incisors; and overjet and overbite increases. Conclusions: The greatest amount of the Class II malocclusion anteroposterior discrepancy was corrected with the Jasper jumper appliance. Part of the correction was lost during Class II intermaxillary elastics use after use of the Jasper jumper appliance. (Am J Orthod Dentofacial Orthop 2011;140:e77-e84)