3D reconstruction of TMJ after resection of the cyst and the stress–strain analyses

• Published in: Computer methods and programs in biomedicine 2013-06, Vol.110 (3), p.279-289
• Main Authors: Mahdian, Nima, Dostálová, Tat’jana, Danĕk, Josef, Nedoma, Jiří, Kohout, Josef, Hubáček, Milan, Hliňáková, Petra
• Format: Article
• Language: English
• Subjects: Aged; Biological and medical sciences; Biomechanical Phenomena; Computer Simulation; Contact problem; Exact sciences and technology; Female; Finite Element Analysis; Finite element method; Fundamental and applied biological sciences. Psychology; Fundamental areas of phenomenology (including applications); Humans; Imaging, Three-Dimensional - methods; Internal Medicine; Jaw Cysts - diagnostic imaging; Jaw Cysts - pathology; Jaw Cysts - surgery; Linear elasticity; Mandibular Prosthesis; Mathematical modeling; Maxillofacial surgery; Mechanical contact (friction...); Models, Anatomic; Mouth. Exocrine and endocrine salivary glands. Teeth. Esophagus; Other; Physics; Skeleton and joints; Solid mechanics; Static elasticity (thermoelasticity...); Structural and continuum mechanics; Temporomandibular joint; Temporomandibular Joint - physiology; Temporomandibular Joint - physiopathology; Temporomandibular Joint - surgery; Temporomandibular Joint Disorders - diagnostic imaging; Temporomandibular Joint Disorders - pathology; Temporomandibular Joint Disorders - surgery; Tomography, X-Ray Computed - statistics & numerical data; Vertebrates: digestive system; Vertebrates: osteoarticular system, musculoskeletal system
• ISSN: 0169-2607; 1872-7565
• DOI: 10.1016/j.cmpb.2012.12.001

Abstract The aim of this article is 3D analysis of the temporomandibular joint (TMJ) patient, who underwent surgery, during which the right TMJ was resected along with the ramus of mandible and consequently the joint was reconstructed with subtotal replacement. The main goal is to give a suitable formulation of mathematical model, which describes the changes of stresses in TMJ incurred after the surgery. The TMJ is a complex, sensitive and highly mobile joint which works bilaterally so each side influences the contralateral joint and because of this the distribution of the stresses is changed in the healthy joint as well. Detailed knowledge about function these are necessary for clinical application of temporomandibular joint prosthesis and also help us estimate the lifetime of the prosthesis a possibilities of alteration in the contra lateral joint components. The geometry for the 3D models is taken from the CT scan date and its numerical solution is based on the theory of semi-coercive unilateral contact problems in linear elasticity. This article provides medical part with case report, discretion of treatment, than the methods of mathematical modeling and his possibilities are described and finally results are reported.