The modular endoprosthesis for mandibular body replacement. Part 2: Finite element analysis of endoprosthesis reconstruction of the mandible

Wong, Raymond Chung Wen; Tideman, H.; Merkx, M.A.W.; Jansen, John A.; Goh, Suk Meng

doi:10.1016/j.jcms.2012.03.010

Cited by 35 publications

(14 citation statements)

References 39 publications

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“…Thus, the literature dictates that such an endoprosthesis can be constructed on the mandible because of the existing medullary space. Animal studies published later detailed the results of replacements of the body of the mandible and ramus/condyle [4,55]. Upon scrutiny, the results of these studies revealed that when attempting to replace the body of the mandible, the clinicians encountered prevailing problems such as loosening of the module connections, infection, and loss of peri-implant bone mineral density.…”

Section: Modular Endoprosthesismentioning

confidence: 99%

The Potential of Magnesium Based Materials in Mandibular Reconstruction

Prasadh

Ratheesh

Manakari

et al. 2019

Metals

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The future of biomaterial design will rely on development of bioresorbable implant materials that completely and safely degrade in vivo after the tissues grow, without generating harmful degradation products at the targeted anatomic site. Permanent biomaterials such as Ti6Al4V alloy, 316L stainless steel, and Co-based alloys currently used in mandibular reconstruction often result in stress shielding effects due to mismatch in the Young’s modulus values between the bone and the implant, resulting in implant loosening. Also, allergic responses due to metal ion releases necessitates revision surgery to prevent long term exposure of the body to toxic implant contents. Bioresorbable metals are perceived as revolutionary biomaterials that have transformed the nature of metallic biomaterials from bioinert to bioactive and multi-bio functional (anti-bacterial, anti-proliferation, and anti-cancer). In this aspect, magnesium (Mg)-based materials have recently been explored by the biomedical community as potential materials for mandibular reconstruction, as they exhibit favorable mechanical properties, adequate biocompatibility, and degradability. This article reviews the recent progress that has led to advances in developing Mg-based materials for mandibular reconstruction; correlating with the biomechanics of mandible and types of mandibular defects. Mg-based materials are discussed regarding their mechanical properties, corrosion characteristics, and in vivo performance. Finally, the paper summarizes findings from this review, together with a proposed scope for advancing the knowledge in Mg-based materials for mandibular reconstruction.

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Section: Modular Endoprosthesismentioning

confidence: 99%

The Potential of Magnesium Based Materials in Mandibular Reconstruction

Prasadh

Ratheesh

Manakari

et al. 2019

Metals

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“…The mandibular implant has a stem geometry similar to the modular endoprosthesis proposed in Tideman (2006) and in Lee et al (2008), aiming to recover more accurately the facial profile, enhancing facial aesthetics, and function of the masticatory system. As mentioned previously, the mandibular endoprosthesis may be advantageous against other prosthetic solutions, because it avoids the complications associated with reconstruction plates, such as the fracture and the detachment of the hardware, infection, bone resorption, and with microvascular flaps, such as the lack of bone volume to enable the placement of osseointegrated implants for oral rehabilitation (Goh et al, 2008;Knoll et al, 2006;Wong et al, 2012b). The trajectories of the forces applied to the mandible by fixation screws are different from the physiological forces caused by mastication.…”

Section: Cephalometric Assessment and Implant Modellingmentioning

confidence: 99%

The feasibility of a custom-made endoprosthesis in mandibular reconstruction: Implant design and finite element analysis

Pinheiro

Alves

2015

Journal of Cranio-Maxillofacial Surgery

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This work studies the feasibility of custom-made endoprosthesis in the reconstruction of major mandibular defects. The natural anatomical and occlusal relations are used to accurately reconstruct a mandibular defect. The customized implant allows the accurate restoration of the facial profile and aesthetics. The biomechanical behaviour of mandibular endoprosthesis was validated with Finite Element Analysis for three masticatory tasks, namely incisal, right molar and left group clenching. The implanted mandible shows displacement fields and stress distributions very similar to the intact mandible. The strain fields observed along the bone-implant interface may promote bone maintenance and ingrowth. The preliminary results show that this implant may be a reliable alternative to other prosthetic mandibular reconstruction approaches.

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“…Korioth and Hannam (1994) reported that various clenching tasks are performed by 9 mandibular muscles. In studies regarding the finite element simulation of mandible movements and clenching tasks, authors have assigned nine (van Essen et al, 2005), seven (Tie et al, 2006), five (Wong et al, 2012), four (Daas et al, 2008;Pileicikiene et al, 2007), and two mandibular muscles (Oguz et al, 2009) in their loading condition settings. In this study, we simulated clenching tasks involving six mandibular muscles: two masseter muscles (SM and DM), one medial pterygoid muscle, and three temporalis muscles (AT, MT, and PT).…”

Section: Discussionmentioning

confidence: 99%