Ayali Aysa, Erkmen Erkan
Department of Oral and Maxillofacial Surgery, Near East University, Nicosia Cyprus, Mersin.
Department of Oral and Maxillofacial Surgery, Gazi University, Ankara, Turkey.
J Craniofac Surg. 2018 May;29(3):603-607. doi: 10.1097/SCS.0000000000004327.
The purpose of the current study was to assess the biomechanical behavior of 5 different fixation schemes for unfavorable mandibular angle fractures using the three-dimensional finite element analysis method. Five different miniplate fixation schemes were modeled for the fixation of unfavorable mandibular angle fractures. A double parallel miniplate (M1), which was placed at the halfway point of the mandibular angle height; a 1/3 superior-positioned miniplate (M2); a single miniplate (M3), which was placed at the halfway point of the mandibular angle height (1/2 middle-positioned); a 1/3 inferior-positioned miniplate (M4); and an X-miniplate which was placed at the halfway point of the mandibular angle height (M5). The lowest mechanical stresses were detected in the double miniplate model when compared with the other schemes, whereas 1/3 inferior-positioned miniplate had the highest stress and displacement values. The authors suggest that the double miniplate is an adequate rigid fixation technique, whereas the 1/3 inferior-positioned miniplate configuration should not be used in case of unfavorable mandibular angle fracture.
本研究的目的是使用三维有限元分析方法评估5种不同固定方案对下颌角骨折的生物力学行为。针对下颌角骨折的固定，模拟了5种不同的微型钢板固定方案。一种双平行微型钢板（M1），放置在下颌角高度的中点；一种位于上方1/3位置的微型钢板（M2）；一种单微型钢板（M3），放置在下颌角高度的中点（中间1/2位置）；一种位于下方1/3位置的微型钢板（M4）；以及一种放置在下颌角高度中点的X型微型钢板（M5）。与其他方案相比，双微型钢板模型中的机械应力最低，而位于下方1/3位置的微型钢板的应力和位移值最高。作者建议，双微型钢板是一种足够坚固的固定技术，而对于下颌角骨折，不应使用位于下方1/3位置的微型钢板配置。
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