Biomechanical Optimization of Bone Plates Used in Rigid Fixation of Mandibular Symphysis Fractures

Capturing the multiscale anatomical shape variability with polyaffine transformation trees

“…1), have fracture strain of 69% to 59% and implant stress of 34% to 27% with respect to smaller standard implants, while minimizing patient intrusion by saving 55% of implanted volume of larger standard implants. The same authors presented results on implant optimization of the "symphyseal and parasymphyseal" region with similar results (Lovald et al, 2010). In Cervantes et al (2012), flexible implants that allow the surgeon to adjust the geometry after bone fixation are presented.…”

“…gender, age, etc.). None of the aforementioned population-based approach consider the bone mineral density in addition to the surface geometry, even though Lovald et al (2009Lovald et al ( , 2010 reported its importance to achieve optimal design and placement of screws.…”

In vitro mechanical assessment of 2.0-mm system three-dimensional miniplates in anterior mandibular fractures

“…Thus a complex form of biomechanical behaviour can be expected for the region as a whole. 3,6 According to research conducted by Tams et al 25 , the symphyseal region has one of the highest negative moments of force (defined as being the reduction in the distance between the fragments on the alveolar border) as compared to other mandibular regions, and this generates great tension at the inferior border and compression at the superior border. These researchers found little evidence of shear forces in this region, but found that moments of force are more intensely present than in other regions.…”

“…Rigid internal fixation (RIF) is used to achieve a stable anatomical reduction, thereby reducing the risk of postoperative displacement of fractured bone fragments, avoiding the need for maxillomandibular fixation 1,2 and favouring an early return to normal functioning. 3,4 The mandible is subject to forces generated by the chewing muscles transmitted via the teeth and the temporomandibular joints. During treatment, tensions and deformations occur according to the distribution of the external forces and the properties and geometry of the material being used.…”

Customized mandibular reconstruction plates improve mechanical performance in a mandibular reconstruction model

“…Finite element analysis provides biomechanical information useful for implant shape optimization (Lovald et al 2010) and comparison of different plating systems (Boyd et al 2008). Finite element based sensitivity analyses can define the most effective locations for altering the geometry in order to reduce stress concentrations.…”