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Improved anchoring nails: design and analysis of resistance ability Tensile test and finite element analysis (FEA) of improved anchoring nails used in temporomandibular joint (TMJ) disc anchor

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机构: [1]Department of Oral and Maxillofacial Surgery, School of Medicine, Ninth People’s Hospital, Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai 200011, People’s Republic of China. [2]Department of Stomatology, Tongren Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200336, People’s Republic of China. [3]Department of Oral Surgery, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, College of Stomatology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, No. 639, Zhi-Zao-Ju Road, 200011 Shanghai, People’s Republic of China.
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关键词: Temporalmandibular joint disc anchorage Mandibular condyle Anchoring nail Suture Tensile test Finite element analysis FEA

摘要:
Background: Anchorage is one of the most important treatments for severe temporomandibular joint disorder (TMD). Anchoring nails have shown great success in clinical trials; however, they can break under pressure and are difficult to remove. In this study, we aimed to evaluate an improved anchoring nail and its mechanical stability. Methods: The experiment consisted of two parts: a tensile test and finite element analysis (FEA). First, traditional and improved anchoring nails were implanted into the condylar cortical bone and their tensile strength was measured using a tension meter. Second, a three-dimensional finite element model of the condyles with implants was established and FEA was performed with forces from three different directions. Results: The FEA results showed that the total force of the traditional and improved anchoring nails is 482 N and 200 N, respectively. The mean (+/- s.d.) maximum tensile strength of the traditional anchoring nail with a 3-0 suture was 27.53 +/- 5.47 N. For the improved anchoring nail with a 3-0 suture it was 25.89 +/- 2.64 N and with a 2-0 suture it was above 50 N. The tensile strengths of the traditional and improved anchoring nails with a 3-0 suture was significantly different (P = 0.033-< 0.05). Furthermore, the difference between the traditional anchoring nail with a 3-0 suture and the improved anchoring nail with a 2-0 suture was also significantly different (P = 0.000-< 0.01). Conclusion: The improved anchoring nail, especially when combined with a 2-0 suture, showed better resistance ability compared with the traditional anchoring nail.

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出版当年[2017]版:
大类 | 4 区 医学
小类 | 4 区 牙科与口腔外科
最新[2023]版:
大类 | 2 区 医学
小类 | 2 区 牙科与口腔外科
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出版当年[2016]版:
Q2 DENTISTRY, ORAL SURGERY & MEDICINE
最新[2023]版:
Q1 DENTISTRY, ORAL SURGERY & MEDICINE

影响因子: 最新[2023版] 最新五年平均 出版当年[2016版] 出版当年五年平均 出版前一年[2015版] 出版后一年[2017版]

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第一作者机构: [1]Department of Oral and Maxillofacial Surgery, School of Medicine, Ninth People’s Hospital, Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai 200011, People’s Republic of China.
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通讯作者:
通讯机构: [1]Department of Oral and Maxillofacial Surgery, School of Medicine, Ninth People’s Hospital, Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai 200011, People’s Republic of China. [3]Department of Oral Surgery, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, College of Stomatology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, No. 639, Zhi-Zao-Ju Road, 200011 Shanghai, People’s Republic of China.
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