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Título: | Ex-vivo and in vitro validation of an innovative mandibular condyle implant concept |
Autor: | Ramos, Antonio; González-Pérez, Luis Miguel; Infante-Cossío, Pedro; Mesnard, Michel | Palabras clave: | Temporomandibular joint Computer models Cadaver experiments |
Fecha de publicación: | ene-2019 | Editor: | Elsevier | Citación: | Journal of Cranio-Maxillofacial Surgery 47(1): 112-119 (2019) | Resumen: | [Purpose] The purpose of this study is to pre-validate an inovative implant concept, and to compare the behavior of the mandibular condyle against a commercial Biomet implant in an ex vivo model and present results of the first cadaveric studies. [Materials and methods] Three experimental cadaveric condyles were tested under three conditions: one intact, another with the Biomet model, and one with the innovative concept. The condyle was tested with a reaction of 300 N in all situations and the principal strains were measured. Before the geometry of the cadaveric condyle was reconstructed from a microCT scan, and a finite element model was created. Finally, a procedure was carried out with the new implant by two expert surgeons on a two cadaveric head model. [Results] In vitro the mandible condyle presents a linear behavior until maximum load. The strain measured with Biomet implant indicates a strain shielding effect in the proximal region, inducing bone loss in the long term. The lingual side of the Biomet implanted condyle presents an increase of +44% in strain. [Conclusion] The new concept was evaluated and showed a similar behavior to the intact model, and better behavior than the Biomet. The innovative concept proves that it is possible to avoid screws for a TMJ fixation and improve the TMJ alloplastic behavior. |
Versión del editor: | http://dx.doi.org/10.1016/j.jcms.2018.11.010 | URI: | http://hdl.handle.net/10261/213933 | DOI: | 10.1016/j.jcms.2018.11.010 | Identificadores: | doi: 10.1016/j.jcms.2018.11.010 issn: 1010-5182 |
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