Kurakar Manju, Joshi Udupikrishna
Department of Oral and Maxillofacial Surgery, Sinhgad Dental College and Hospital, Pune, India.
Affiliated to Maharashtra University of Health Science, Nashik, Maharshtra India.
J Maxillofac Oral Surg. 2023 Mar;22(1):9-17. doi: 10.1007/s12663-021-01649-3. Epub 2021 Oct 3.
The present study compared the stability of fracture fragments in the management of bilateral parasymphysis mandible fracture with Miniplate fixation and Reconstruction plate fixation using finite element analysis.
3D FE Mandible model was created using CT scanner. Two bilateral parasymphysis mandible fracture models were created. Model 1 was fixed with Miniplates, and Model 2 was fixed with Reconstruction plate. Loading forces of 120 N at molar region and 62.5 N at incisor region were applied. These two models were imported to ANSY'S Workbench Software.
Miniplate fixation model showed comparatively reduced gap between fragments than Reconstruction plate. But the gap values of both the models were within the physiologic limit of healing under this specific loading. Analytically Miniplates were superior to Reconstruction plate in the management of bilateral parasymphysis fracture.
Analytically Miniplates are superior to Reconstruction plate in the management of bilateral parasymphysis fracture. As the masticatory forces were reduced during fracture healing period, both fixations provide satisfactory healing. So both Miniplate and Reconstruction plate can be considered as fixation method for bilateral parasymphysis mandible fracture.
本研究采用有限元分析比较微型钢板固定和重建钢板固定在双侧下颌骨颏部骨折治疗中骨折碎片的稳定性。
使用CT扫描仪创建三维有限元下颌骨模型。创建两个双侧下颌骨颏部骨折模型。模型1用微型钢板固定,模型2用重建钢板固定。在磨牙区施加120N的加载力,在切牙区施加62.5N的加载力。将这两个模型导入ANSY'S Workbench软件。
微型钢板固定模型显示碎片之间的间隙比重建钢板小。但在这种特定加载下,两个模型的间隙值均在愈合的生理极限范围内。分析表明,在双侧颏部骨折的治疗中,微型钢板优于重建钢板。
分析表明,在双侧颏部骨折的治疗中,微型钢板优于重建钢板。由于骨折愈合期间咀嚼力降低,两种固定方式均能提供满意的愈合效果。因此,微型钢板和重建钢板均可作为双侧下颌骨颏部骨折的固定方法。