Albougha Safieh, Albogha Mhd Hassan, Darwich Mhd Ayham, Darwich Khaldoun
Department of Oral and Maxillofacial Surgery, Faculty of Dental Medicine, Damascus University, Damascus, Syria.
Oral Maxillofac Surg. 2015 Sep;19(3):281-5. doi: 10.1007/s10006-015-0491-8. Epub 2015 Mar 19.
This study was conducted to determine the best design of biodegradable plates for providing rigidity when used for fixation of sagittal split ramus osteotomy.
A computerized tomography image of a patient was used to generate a 3D model of a hemi-mandible. Four plate designs were merged with the hemi-mandible. They were (1) straight plate, (2) double straight plate, (3) T-shaped plate, and (4) double Y-shaped plate. Four finite element models were analyzed using the properties of biodegradable materials for the plates, and four additional models were analyzed using titanium alloy properties.
The models predicted that rigidity of fixation would be noticeably less among biodegradable plates than titanium plates. They also predicted that the most rigid design among the titanium plates would be the straight plate, but among the biodegradable plates, it would be the double Y-shaped plate.
The double Y-shaped design is recommended when using biodegradable plates in fixation of sagittal split ramus osteotomy.
本研究旨在确定用于下颌支矢状劈开截骨术固定时提供刚性的可生物降解接骨板的最佳设计。
使用一名患者的计算机断层扫描图像生成半下颌骨的三维模型。将四种接骨板设计与半下颌骨合并。它们分别是：（1）直板，（2）双直板，（3）T形板，以及（4）双Y形板。使用接骨板的可生物降解材料特性分析了四个有限元模型，并使用钛合金特性分析了另外四个模型。
模型预测，可生物降解接骨板的固定刚性明显低于钛板。它们还预测，钛板中最刚性的设计是直板，但在可生物降解接骨板中，最刚性的将是双Y形板。
在下颌支矢状劈开截骨术固定中使用可生物降解接骨板时，推荐采用双Y形设计。
