Keller D
J Gen Orthod. 1993 Jun;4(2):5-9.
This article presents a number of cases originally treated by orthodontic specialists which were retreated because the initial results became unstable over time. Diagnostic evaluations uncovered many common reasons for the initial treatment failures. Methods utilized during re-treatment addressed the causative factors related to the initial instability and have proven effective in maintaining a consistent dental relationship for over five years. The results have been both aesthetic and functional.
本文介绍了一些最初由正畸专家治疗的病例，这些病例因最初的治疗效果随时间推移变得不稳定而进行了二次治疗。诊断评估揭示了许多导致最初治疗失败的常见原因。二次治疗中采用的方法解决了与最初不稳定相关的致病因素，并已证明在维持稳定的牙齿关系长达五年以上方面是有效的。结果在美观和功能上都很理想。
