Costa A, Raffainl M, Melsen B
Department of Surgery, University of Parma, Italy.
Int J Adult Orthodon Orthognath Surg. 1998;13(3):201-9.
The problems related to anchorage for orthodontic tooth movements in patients with deficient dentition are discussed, and various solutions suggested in the literature, including "onplants," implants, and zygoma wires, are evaluated. A miniscrew is presented as alternative anchorage, and possible locations for placement are discussed, based on studies of bone quality in dry skulls. Application of the miniscrew as anchorage for various types of tooth movement is demonstrated. Miniscrews are easily placed and removed and can be loaded immediately following insertion. However, stability is limited after loading with torsion.
讨论了牙列缺损患者正畸牙齿移动的支抗相关问题，并对文献中提出的各种解决方案进行了评估，包括“种植体支抗”、种植体和颧弓丝。基于对干燥颅骨骨质量的研究，提出了一种微型螺钉作为替代支抗，并讨论了其可能的植入位置。展示了微型螺钉作为各种类型牙齿移动支抗的应用。微型螺钉易于植入和取出，植入后可立即加载。然而，加载扭转力后稳定性有限。
