Greco Mario, Giancotti Aldo
Dept. of Orthodontics, University of Ferrara, Italy.
Prog Orthod. 2007;8(1):144-55.
The Bidimensional technique is an edgewise technique in which 2 different sized vertically slotted brackets are used. On the central and lateral incisors, .018" x .022" brackets are placed on the central and lateral incisors and .022" x .028" brackets are placed on the canines, molars and premolars. The maxillary incisor brackets are programmed. All movements, including bodily retraction of the maxillary incisors are produced by sliding mechanincs. When retracting maxillary incisors, an .018" x. 022" wire which fills the vertical portion of the brackets, providing torque control, is inserted and 300 gm intra arch forces are placed for incisor retraction. In the buccal segments, the .018" x .022" wire is undersized relative to the canine, premolar and molar brackets and can readily slide through the brackets and tubes. The method is described and illustrated with one case report of the extraction treatment of a patient with Class I bimaxillary protrusion.
二维技术是一种方丝弓技术，其中使用两种不同尺寸的垂直槽沟托槽。在中切牙和侧切牙上放置0.018英寸×0.022英寸的托槽，在尖牙、磨牙和前磨牙上放置0.022英寸×0.028英寸的托槽。上颌中切牙托槽是预置的。所有移动，包括上颌中切牙的整体后移，均通过滑动机制实现。当上颌中切牙后移时，插入一根能填满托槽垂直部分以提供转矩控制的0.018英寸×0.022英寸的弓丝，并施加300克的内弓力来实现切牙后移。在颊侧段，0.018英寸×0.022英寸的弓丝相对于尖牙、前磨牙和磨牙托槽尺寸较小，能够很容易地在托槽和管中滑动。本文通过一个I类双颌前突患者拔牙治疗的病例报告对该方法进行了描述和说明。
