复合咬合夹板-护齿在模拟颌面部创伤冲击中的应力集中:3D-FEA

IF 0.5 Q4 DENTISTRY, ORAL SURGERY & MEDICINE
João Paulo Mendes Tribst, A. D. Dal Piva, Les Kalman
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引用次数: 1

摘要

护齿器(MG)是一种可以降低面部创伤风险的保护装置。然而,许多运动员并不使用它们。此外,MG佩戴与巧合的功能活动没有被考虑。本研究的目的是比较传统MG和新型混合矫治器(HMG)在直接冲击下的应力分布。利用计算机辅助设计(CAD)软件,将牙齿插入到各自的牙槽中,建立了人类头骨模型。车型根据MG类型(常规或混合)进行划分。几何图形导出到计算机辅助工程(CAE)软件中,材料被认为是各向同性的。固定在上颌骨底部。这个负荷是用冰球施加的。分别对常规牙和混合牙、上牙、下牙和上颌骨进行了总变形(mm)和von Mises应力(MPa)测量。尽管存在MG,但仍有可能观察到所有结构中产生的应力。然而,混合设计比传统设计更有效地减少了碰撞时的位移,从而减少了对上牙、下牙和上颌骨的应力。与常规装置相比,混合结构设计中较高的应力量级更集中在内部。HMG矫治器降低了牙齿和骨骼的应力集中,将易受伤的区域限制在冰球直接影响的区域。尽管新型HMG可以减轻损伤,但仍然会产生一些压力,任何可能的损伤都应该由牙科专业人员进行评估。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Stress Concentration of Hybrid Occlusal Splint-Mouthguard during a Simulated Maxillofacial Traumatic Impact: 3D-FEA
Mouthguards (MG) are protective devices that can reduce the risks of facial trauma. However, many athletes do not use them. Additionally, MG wear with coincidental parafunctional activity has not been considered. The aim of this study was to evaluate the stress distribution as a consequence of a direct impact comparing a conventional MG with a novel hybrid appliance (HMG). Using computer-aided design (CAD) software, a human skull was modeled with the teeth inserted into their respective alveolus. The models were divided according to the MG type (conventional or hybrid). The geometries were exported to the computer-aided engineering (CAE) software and the materials were considered isotropic. Fixation was defined at the base of the maxilla. The load was applied using a hockey puck. The total deformation (mm) and the von Mises stress (MPa) results were obtained for the MGs (conventional and hybrid), upper teeth, lower teeth, and maxillary bone. Despite the presence of an MG, it is still possible to observe generated stress in all structures. However, the hybrid design was more efficient than the conventional design in reducing the displacement during the impact and consequently the stress on the upper teeth, lower teeth, and maxillary bone. Higher stress magnitude was more concentrated at the inner portion of the hybrid design than the conventional device. The HMG appliance decreased the stress concentration in the teeth and in the bone, limiting the areas susceptible to injuries to the regions directly impacted by the hockey puck. Although the novel HMG may mitigate injury, some stress will still result, and any possible injury should be evaluated by a dental professional.
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来源期刊
Open Dentistry Journal
Open Dentistry Journal DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
2.00
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86
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