Factors related to stability following the surgical correction of skeletal open bite
Factors related to stability following the surgical correction of skeletal open bite
复制标题
骨性开颌手术矫正后与稳定性相关的因素
DOI：
10.2478/aoj-2014-0008
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发表时间：
2014
影响因子：
0.4
通讯作者：
K. Tanne
中科院分区：
文献类型：
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作者：
G. Ito;Myongsun Koh;T. Fujita;M. Shirakura;H. Ueda;K. Tanne
摘要目标：如果通过仅针对下颌骨的正颌外科手术治疗骨性前开咬合错牙合，则下颌以逆时针旋转向上重新定位。然而，这种方法有很高的复发风险。本研究探讨骨性前牙开牙合畸形矫治术后稳定性的主要影响因素。材料和方法：本文对十八位正颌患者进行头影测量分析，以评估下颌骨手术矫正前牙开牙合后牙齿和骨骼的变化。根据手术后鼻根-颏（N-Me）距离的增加或减少将患者分为两组。术前、术后即刻和术后至少一年后评价覆牙合、磨牙移位和门顿位置变化。结果：N-Me距离减小组的下颌骨向后定位明显增加。N-Me距离增加的组经历了更大的下磨牙的牙槽突挤压。结论：充分的下颌后移是预防开牙合复发的有效方法。此外，重要的是在术后正畸治疗期间不诱导磨牙挤出，以保持手术开牙合矫正的稳定性。
Abstract Objectives: If a skeletal anterior open bite malocclusion is treated by orthognathic surgery directed only at the mandible, the lower jaw is repositioned upward in a counter-clockwise rotation. However, this procedure has a high risk of relapse. In the present study, the key factors associated with post-surgical stability of corrected skeletal anterior open bite malocclusions were investigated. Material and methods: Eighteen orthognathic patients were subjected to cephalometric analysis to assess the dental and skeletal changes following mandibular surgery for the correction of an anterior open bite. The patients were divided into two groups, determined by an increase or decrease in nasion-menton (N-Me) distance as a consequence of surgery. Changes in overbite, the displacements of molars and positional changes in Menton were evaluated immediately before and after surgery and after a minimum of one year post-operatively. Results: The group with a decreased N-Me distance exhibited a significantly greater backward positioning of the mandible. The group with an increased N-Me distance experienced significantly greater dentoalveolar extrusion of the lower molars. Conclusions: A sufficient mandibular backward repositioning is an effective technique in the prevention of open bite relapse. In addition, it is important not to induce molar extrusion during post-surgical orthodontic treatment to preserve stability of the surgical open bite correction.
DOI：
10.1016/j.tripleo.2006.12.023
发表时间：
2007-08-01
期刊：
ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTOLOGY
影响因子：
--
作者：
Frey, Daniela Rezende;Hatch, John P.;Rugh, John D.
通讯作者：
Rugh, John D.