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
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.
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.
基金:
This work was supported by a grant form the Clinical Research Program of
9th People’s Hospital, Shanghai Jiao Tong University School of Medicine.
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.
共同第一作者:
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.
推荐引用方式(GB/T 7714):
Zhou Z. H.,Chen X. Z.,Chen X. W.,et al.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[J].BMC ORAL HEALTH.2018,18:doi:10.1186/s12903-018-0606-3.
APA:
Zhou, Z. H.,Chen, X. Z.,Chen, X. W.,Wang, Y. X.,Zhang, S. Y....&Zhen, J. Z..(2018).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.BMC ORAL HEALTH,18,
MLA:
Zhou, Z. H.,et al."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".BMC ORAL HEALTH 18.(2018)