A three dimensional (3D) musculoskeletal finite element analysis of DARSN temporomandibular joint (TMJ) prosthesis for total unilateral alloplastic joint replacement
| Autor: | D. Bhargava, R.S. Neelakandan, V. Dalsingh, Y. Sharma, A. Pandey, S. Beena, G. Koneru |
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| Rok vydání: | 2019 |
| Předmět: |
Joint replacement
medicine.medical_treatment Perforation (oil well) Finite Element Analysis Prosthesis Design Prosthesis Condyle 03 medical and health sciences 0302 clinical medicine Medicine Arthroplasty Replacement 030223 otorhinolaryngology Joint (geology) Orthodontics Surgical team Temporomandibular Joint business.industry 030206 dentistry Muscles of mastication Temporomandibular joint Biomechanical Phenomena medicine.anatomical_structure Otorhinolaryngology Surgery Oral Surgery business |
| Zdroj: | Journal of stomatology, oral and maxillofacial surgery. 120(6) |
| ISSN: | 2468-7855 |
| Popis: | Purpose The purpose of this study was to evaluate the strain and stress distribution for DARSN alloplastic unilateral temporomandibular joint (TMJ) prosthesis and the effects on contralateral natural joint using a finite element analysis (FEA). Methods The replacement of the TMJ may have complications like infection, failure of hardware, facial paralysis and perforation. The understanding of the mechanical forces exerted by muscles of mastication and jaw movement on the joint helps in identifying the regions on alloplastic TMJ with various maximum forces, which makes that area more prone for failure of hardware. A three dimensional structural FEA was applied using a validated finite element model (FEM) where the areas of stress and strain were evaluated in the alloplastic joint and the contralateral natural joint. As the pattern of stress and strain can be influenced by the materials used for alloplastic joint and geometry of the design, mechanical property of bone and the attached musculature were also considered while construction the FEM analysis. Results The forces of the muscles of mastication has a vital role on the amount of stress and strain present across the alloplastic joint. Masseter and temporalis exhibited the greatest resultant force on the alloplastic as well as the natural condyle with a magnitude of 272 N and 329 N. This study assessed the maximum stress and strain on the condyle-ramus unit and fossa. Conclusion FEA shows that alloplastic DARSN TMJ prosthesis distributes stress and strain equally between the alloplastic joint site and the contralateral natural joint causing minimal adverse effects to the natural joint. FEA also evaluated the stress and strain on alloplastic component and resulted in drawing clinical implications for operating surgical team. |
| Databáze: | OpenAIRE |
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