Shroff B, Lindauer S J, Burstone C J, Leiss J B
Department of Orthodontics, University of Maryland School of Dentistry, Baltimore.
Am J Orthod Dentofacial Orthop. 1995 Feb;107(2):136-43. doi: 10.1016/s0889-5406(95)70128-1.
Deep overbite correction and space closure in patients with flared incisors are mechanically difficult to achieve with conventional orthodontic treatment. The purpose of this article is to present an appliance design that allows simultaneous intrusion and retraction of anterior teeth as well as correction of their axial inclinations. A three-piece base arch was used to achieve simultaneous intrusion and space closure. Various clinical situations are discussed and analyzed from a biomechanical standpoint. Sequences of treatment, appliance design, and management of side effects are described in detail. The segmented approach to simultaneous intrusion and space closure is useful for achieving precise control of tooth movements in the anteroposterior and vertical dimensions.
对于伴有前牙唇倾的患者，采用传统正畸治疗在力学上很难实现深覆合的矫正和间隙关闭。本文的目的是介绍一种矫治器设计，该设计能够同时实现前牙的压低和内收以及纠正其轴倾度。采用三段式基弓来实现同时压低和间隙关闭。从生物力学角度对各种临床情况进行了讨论和分析。详细描述了治疗顺序、矫治器设计以及副作用的处理。同时压低和间隙关闭的分段方法有助于在前后向和垂直方向上实现对牙齿移动的精确控制。
