Comparison of three implant systems under preload loss: A finite element analysis validated by digital image correlation methods.

IF 3.2 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of prosthodontic research Pub Date : 2024-10-01 DOI:10.2186/jpr.JPR_D_24_00064

Annikaer Anniwaer, Zhengrong Yin, Jiakang Zhu, Chunxiao Jin, Aihemaiti Muhetaer, Cui Huang

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引用次数: 0

Abstract

Purpose: This study evaluated the effects of screw preload loss on three implant systems, both in silico and in vitro.

Methods: Three finite element analysis (FEA) models of implant restorations were created using bone-level (BL, 4.8×12 mm; BLX, 4.5×12 mm) and tissue-level (TL, 4.8×12 mm) implant systems. The screws in each group were subjected to preloads of 100 N and 200 N, with an additional 130 N load applied to the crown tops. An in vitro study of the principal strain was conducted using digital image correlation (DIC) under the same conditions as for the FEA models. The results were evaluated for von Mises stress, principal strain, and sensitivity index.

Results: During loading, the highest stress levels were observed in the implants and screws. In the BL group, the screws experienced the highest von Mises stress at 466.04 MPa and 795.26 MPa in the 100 N and 200 N groups, respectively. The BLX group showed the highest von Mises stress at 439.33 MPa and 780.88 MPa in the implants in the 100 N and 200 N groups. Sensitivity analysis revealed that the screws and abutments in the TL group were significantly more affected by the preload changes.

Conclusions: The abutment in the TL group was particularly sensitive to preload changes compared with those in the BL and BLX groups. Variations in the preload significantly affect the stress distribution in implants and screws. Maintaining screw preload stability under loading is crucial in clinical practice to prevent mechanical failure.

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预紧力损失下三种种植体系统的比较：通过数字图像相关方法验证的有限元分析。

目的：本研究评估了螺丝预紧力损失对三种种植体系统的影响：使用骨水平（BL，4.8×12 毫米；BLX，4.5×12 毫米）和组织水平（TL，4.8×12 毫米）种植体系统创建了三个种植修复体有限元分析（FEA）模型。每组中的螺钉分别承受 100 N 和 200 N 的预紧力，牙冠顶部还承受 130 N 的额外负荷。在与有限元分析模型相同的条件下，使用数字图像相关技术（DIC）对主应变进行了体外研究。对结果进行了冯米塞斯应力、主应变和灵敏度指数评估：结果：在加载过程中，植入体和螺钉的应力水平最高。在 BL 组中，100 N 和 200 N 组的螺钉分别承受了 466.04 MPa 和 795.26 MPa 的最高 von Mises 应力。在 BLX 组中，100 N 和 200 N 组种植体的最大 von Mises 应力分别为 439.33 MPa 和 780.88 MPa。敏感性分析表明，TL 组的螺钉和基台受预紧力变化的影响更大：结论：与 BL 和 BLX 组相比，TL 组的基台对预紧力变化特别敏感。预紧力的变化会明显影响种植体和螺钉的应力分布。在临床实践中，保持螺钉预紧力在负荷下的稳定性对于防止机械故障至关重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of prosthodontic research DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

6.90

自引率

11.10%

发文量

161

期刊介绍： Journal of Prosthodontic Research is published 4 times annually, in January, April, July, and October, under supervision by the Editorial Board of Japan Prosthodontic Society, which selects all materials submitted for publication. Journal of Prosthodontic Research originated as an official journal of Japan Prosthodontic Society. It has recently developed a long-range plan to become the most prestigious Asian journal of dental research regarding all aspects of oral and occlusal rehabilitation, fixed/removable prosthodontics, oral implantology and applied oral biology and physiology. The Journal will cover all diagnostic and clinical management aspects necessary to reestablish subjective and objective harmonious oral aesthetics and function. The most-targeted topics: 1) Clinical Epidemiology and Prosthodontics 2) Fixed/Removable Prosthodontics 3) Oral Implantology 4) Prosthodontics-Related Biosciences (Regenerative Medicine, Bone Biology, Mechanobiology, Microbiology/Immunology) 5) Oral Physiology and Biomechanics (Masticating and Swallowing Function, Parafunction, e.g., bruxism) 6) Orofacial Pain and Temporomandibular Disorders (TMDs) 7) Adhesive Dentistry / Dental Materials / Aesthetic Dentistry 8) Maxillofacial Prosthodontics and Dysphagia Rehabilitation 9) Digital Dentistry Prosthodontic treatment may become necessary as a result of developmental or acquired disturbances in the orofacial region, of orofacial trauma, or of a variety of dental and oral diseases and orofacial pain conditions. Reviews, Original articles, technical procedure and case reports can be submitted. Letters to the Editor commenting on papers or any aspect of Journal of Prosthodontic Research are welcomed.