McDougall P D, McNamara J A, Dierkes J M
Am J Orthod. 1982 Jul;82(1):10-22. doi: 10.1016/0002-9416(82)90541-3.
This article compares the arch development in growing Class II patients after Fränkel therapy with arch development in a similar group of untreated Class II subjects. Sixty treated and forty-seven untreated persons were compared for a 2- to 4-year period. Expansion of the maxillary and mandibular dental arches occurred to a much greater extent in patients undergoing Fränkel treatment than in the control subjects. The expansion was not limited to a particular region of the dental arch in the treated cases, although the largest expansion values were recorded in the premolar and molar regions. Lesser values were recorded in the canine region.
本文比较了接受弗氏疗法的生长发育期II类错颌患者的牙弓发育情况与一组未经治疗的相似II类受试者的牙弓发育情况。在2至4年的时间里，对60名接受治疗的患者和47名未经治疗的患者进行了比较。接受弗氏治疗的患者上颌和下颌牙弓的扩展程度比对照组受试者大得多。在接受治疗的病例中，牙弓扩展并不局限于牙弓的特定区域，尽管在前磨牙和磨牙区域记录到的扩展值最大。在尖牙区域记录到的扩展值较小。
