Lee R T
Orthodontic Department, The Dental Institute, The Royal Hospitals NHS Trust, New Road, Whitechapel, London, E1 1BB, United Kingdom.
Am J Orthod Dentofacial Orthop. 1999 Mar;115(3):305-13. doi: 10.1016/S0889-5406(99)70334-3.
A study of the literature reveals a variety of opinions on the potential for change in arch dimensions. The variations in sample sizes, treatment mechanics, and retention regimens may obscure relevant findings. These articles confirm some common findings, and a number of clinical cases are presented to illustrate these trends. It would seem that limited degrees of arch expansion can be produced regularly, but careful case selection is necessary. Arch expansion is most likely to be achieved in the growing patient with correction of crossbites, correction of a Class II malocclusion, and achievement of a good intercuspation without extractions.
对文献的研究揭示了关于牙弓尺寸变化潜力的各种观点。样本量、治疗力学和保持方案的差异可能会掩盖相关研究结果。这些文章证实了一些常见的研究结果，并列举了一些临床病例来说明这些趋势。似乎可以定期实现有限程度的牙弓扩展，但需要仔细选择病例。在生长发育期的患者中，纠正反牙合、纠正II类错牙合以及在不拔牙的情况下实现良好的牙尖交错，最有可能实现牙弓扩展。
