Lisson Jörg Alexander, Mokrys Kay, Kinzinger Gero Stefan Michael, Glasl Bettina, Ludwig Björn
Department of Orthodontics, University Hospital Saarland, Homburg/Saar, Germany.
J Orofac Orthop. 2013 Mar;74(2):113-23. doi: 10.1007/s00056-012-0128-6. Epub 2013 Mar 7.
We performed this study to describe changes in the soft-tissue profile after orthodontic treatment with Tränkmann's bite-jumping appliances. A total of 69 patients thus treated were compared to a control group of 36 age-matched patients based on cephalograms. Statistical analysis included mean values, standard deviations, t-tests, and Pearson's correlation testing. Highly significant (p<0.001) changes in total profile angle (N'-Ns-Pog') were observed over the course of treatment. Furthermore, a mildly significant (p<0.05) correlation with SNA angles was noted. Changes in the soft-tissue profile angle (N'-Sn-Pog') were moderately significant (p<0.001). The profile angles of the upper lip (Sn-SS-Ls) and lower lip (Pog'-Sm-Li) did not reveal significant changes. We observed highly significant (p<0.001) findings in the esthetic line (NsPog') advancement relative to the Ls and Li landmarks and in increases in lower-face height. Midface heights remained unchanged. Our results indicate that treatment with bite-jumping appliances results in increased facial convexity, advancement of the esthetic line, and increased lower-face height. The cumulative effects of growth and treatment do not, however, appear pronounced enough to result in a preference for or against treatment with a bite-jumping appliance.
我们开展这项研究以描述使用特伦克曼咬合跳跃矫治器进行正畸治疗后软组织侧貌的变化。基于头颅侧位片，将总共69例接受该治疗的患者与36例年龄匹配的对照组患者进行比较。统计分析包括均值、标准差、t检验和皮尔逊相关性检验。在治疗过程中观察到总侧貌角（N'-Ns-Pog'）有高度显著（p<0.001）的变化。此外，还发现与SNA角有轻度显著（p<0.05）的相关性。软组织侧貌角（N'-Sn-Pog'）的变化有中度显著（p<0.001）。上唇（Sn-SS-Ls）和下唇（Pog'-Sm-Li）的侧貌角未显示出显著变化。我们观察到相对于Ls和Li标志点，审美线（NsPog'）前移以及面下高增加有高度显著（p<0.001）的结果。面中高保持不变。我们的结果表明，使用咬合跳跃矫治器进行治疗会导致面部凸度增加、审美线前移以及面下高增加。然而，生长和治疗的累积效应似乎并不明显，不足以导致对使用咬合跳跃矫治器治疗的偏好或反对。
