Division of Orthodontics and Dentofacial Orthopedics, American University of Beirut Medical Center, Beirut, Lebanon; Department of Orthodontics, University of Pennsylvania, Philadelphia, PA.
Division of Orthodontics and Dentofacial Orthopedics, American University of Beirut Medical Center, Beirut, Lebanon.
Am J Orthod Dentofacial Orthop. 2020 Sep;158(3):343-348. doi: 10.1016/j.ajodo.2020.02.006. Epub 2020 Jul 21.
The general boundaries to tooth movement are within the adjacent compact and trabecular bones, gingiva, mucosa, and muscular envelope. Findings from finite element analysis of maxillary posterior teeth distalization against mini-implants suggest that stiff outer and interproximal compact bone resists tooth movement, regardless of bone thickness, and that teeth should be steered away from this bone during orthodontic treatment. However, individual variation in the tooth-bone interface dictates the course and outcome of treatment, offering the basis for inferences on the limits of mini-implant anchorage and the presumed influence of the regional acceleratory phenomenon through decortication and microperforation, 2 modalities advocated to effect faster tooth movement.
牙齿移动的一般界限是在相邻的密质骨和小梁骨、牙龈、黏膜和肌肉包膜内。通过对微型种植体远移上颌后牙的有限元分析得出的结果表明，无论骨厚度如何，坚固的外部和邻间密质骨都抵抗牙齿移动，并且在正畸治疗过程中应将牙齿引导离开该骨。然而，牙-骨界面的个体差异决定了治疗的过程和结果，为推断微型种植体锚固的极限以及通过骨皮质切开术和微穿孔术（即主张用于实现更快牙齿移动的两种方式）产生的区域加速现象的假定影响提供了依据。
