Raphael Capelli Guerra, Bianca de Fátima Borim Pulino, Vitor Floriano Salomão Júnior, Rodrigo Dos Santos Pereira, Florian M Thieringer, Roberto Sacco, Robert Sader, Eduardo Hochuli Vieira
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引用次数: 0
摘要
研究目的本研究旨在通过有限元分析（FEA），比较使用 2.4 型和三维（3D）网格板重建的下颌骨薄弱区域与萎缩下颌骨受力发生的解剖区域之间的关系：同时还确定了下颌骨的强度和受力质量。采用有限元分析方法，将有和无分节的萎缩下颌骨模型分为四组，分析每块板的行为。在使用 2.4 型重建钢板的未分段萎缩下颌骨中，观察到钢板的最高应力集中在下颌骨体的后部区域，而在网格型 3D 重建钢板中，观察到钢板的最高应力集中在下颌角：结果：在使用 2.4 重建板的分段萎缩下颌骨中，下颌段缺损处的应力集中度较高。对三维网格状重建板的分析表明，重建板的几何形状赋予了组件更大的刚度，因为在下颌角观察到了最显著的应力集中：结论：钢板设计的宽度可能会影响强度，而不是厚度。
Finite element analysis of low-profile reconstruction plates for atrophic mandibles: a comparison of novel 3D grid and conventional plate designs.
Objectives: This study aimed to compare the reconstruction with type 2.4 and three-dimensional (3D) grid plates relating the areas of weakness to anatomical regions of force incidence in atrophic mandibles with and without segmentation using finite element analysis (FEA).
Materials and methods: Strength and force quality in the mandible were also determined. The atrophic mandible models with and without segmentation were divided into four groups, and the behavior of each plate was analyzed using finite element analysis. In the atrophic mandible without segmentation using the type 2.4 reconstruction plate, the highest stress concentration in the plate was observed in the posterior region of the mandibular body and in the grid type 3D reconstruction plate was observed in the mandibular angle.
Results: In the segmented atrophic mandible with the 2.4 reconstruction plate, higher stress concentration was observed in the mandibular segment defect. Analysis of the 3D grid-like reconstruction plate revealed that the geometry of the plate conferred greater stiffness to the assembly, as the most significant stress concentration was observed at the mandibular angle.
Conclusion: The width of the plate design may influence the strength, not the thickness.
期刊介绍：
Oral & Maxillofacial Surgery founded as Mund-, Kiefer- und Gesichtschirurgie is a peer-reviewed online journal. It is designed for clinicians as well as researchers.The quarterly journal offers comprehensive coverage of new techniques, important developments and innovative ideas in oral and maxillofacial surgery and interdisciplinary aspects of cranial, facial and oral diseases and their management. The journal publishes papers of the highest scientific merit and widest possible scope on work in oral and maxillofacial surgery as well as supporting specialties. Practice-oriented articles help improve the methods used in oral and maxillofacial surgery.Every aspect of oral and maxillofacial surgery is fully covered through a range of invited review articles, clinical and research articles, technical notes, abstracts, and case reports. Specific topics are: aesthetic facial surgery, clinical pathology, computer-assisted surgery, congenital and craniofacial deformities, dentoalveolar surgery, head and neck oncology, implant dentistry, oral medicine, orthognathic surgery, reconstructive surgery, skull base surgery, TMJ and trauma.Time-limited reviewing and electronic processing allow to publish articles as fast as possible. Accepted articles are rapidly accessible online.Clinical studies submitted for publication have to include a declaration that they have been approved by an ethical committee according to the World Medical Association Declaration of Helsinki 1964 (last amendment during the 52nd World Medical Association General Assembly, Edinburgh, Scotland, October 2000). Experimental animal studies have to be carried out according to the principles of laboratory animal care (NIH publication No 86-23, revised 1985).
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