Finite-Element Analysis of 3 Situations of Trauma in the Human Edentulous Mandible

Santos, Leonardo Soriano de Mello; Rossi, Ana Cláudia; Freire, Alexandre Rodrigues; Matoso, Rodrigo Ivo; Cária, Paulo Henrique Ferreira; Prado, Felippe Bevilacqua

doi:10.1016/j.joms.2014.10.014

Cited by 28 publications

(52 citation statements)

References 20 publications

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“…Previous FEA studies showed that the impact in the symphysis region of a dentate or edentulous mandible produced highest stress values in both the condylar neck areas which were similar with M1 model of current study [9, 16]. The highest calculated values of Von Mises stresses and Pmax stresses have been identified in the condylar area in M1 and M2, whereas the highest value in M3 was observed in symphyseal area.…”

Section: Discussionsupporting

confidence: 85%

“…In the literature recent studies compared FEA analysis of mandible fracture with actual clinical cases and reported FEA to be an accurate, non-invasive, and repeatable method for studying the biomechanical behaviour of human mandibles under mechanical loads. Therefore, in ethical considerations FEA reduces the need for animal and cadaveric studies [9, 16, 22]. …”

Section: Discussionmentioning

confidence: 99%

“…Mechanical properties of the materials that were simulated were taken from the literature [14–16] and are presented in Table 1. For standardization, the same overdentures were used by assuming that the material properties were the same for both the base part and artificial teeth.…”

Section: Methodsmentioning

confidence: 99%

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Evaluating the biomechanical effects of implant diameter in case of facial trauma to an edentulous atrophic mandible: a 3D finite element analysis

Ayalı

Bilginaylar

2017

Head Face Med

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BackgroundRehabilitation using an implant supported overdenture with two implants inserted in the interforaminal region is the easiest and currently accepted treatment modality to increase prosthetic stabilization and patient satisfaction in edentulous patients. The insertion of implants to the weakend mandibular bone decreases the strength of the bone and may lead to fractures either during or after implant placement. The aim of this three dimensional finite element analysis (3D FEA) study was to evaluate the biomechanical effects of implant diameter in case of facial trauma (2000 N) to an edentulous atrophic mandible with two implant supported overdenture.MethodsThree 3D FEA models were simulated; Model 1 (M1) is edentulous atrophic mandible, Model 2 (M2), 3.5x11.5 mm implants were inserted into lateral incisors area of same edentulous atrophic mandible, Model 3 (M3), 4.3x11.5 mm implants were inserted into lateral incisors area of same edentulous atrophic mandible.ResultsIn M1 and M2 highest stress levels were observed in condylar neck, whereas highest stress values in M3 were calculated in symphyseal area.ConclusionsTo reduce the risk of bone fracture and to preserve biomechanical behavior of the atrophic mandible from frontal traumatic loads, implants should be inserted monocortically into spongious bone of lateral incisors area.

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Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 99%

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Evaluating the biomechanical effects of implant diameter in case of facial trauma to an edentulous atrophic mandible: a 3D finite element analysis

Ayalı

Bilginaylar

2017

Head Face Med

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“…Mandibular fractures result from direct load application to the impacted area or induced stress in specific areas. Mandible geometry and structural bone variations contribute to the concentration of stresses from traumatic loads on the symphyseal and parasymphyseal areas, which are subsequently distributed to the mandibular subcondylar and nearby regions 16) . Traumatic forces from falls applied to the mandibular symphyseal and parasymphyseal regions cause indirect fractures of the mandibular condyle with or without fractures in other mandibular areas.…”

Section: Discussionmentioning

confidence: 99%

Do the Presence of Mandibular Third Molar and the Occlusal Support Affect the Occurrence and the Mode of Mandibular Condylar Fractures?

Sukegawa

Saika

Kanno

et al. 2019

J. Hard Tissue Biology.

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To investigate the influence of occlusal support and the presence and position of mandibular third molars on the incidence of mandibular condylar fractures. Records of 222 patients who presented with mandibular fracture at the Department of Oral and Maxillofacial Surgery, Kagawa Prefectural Central Hospital, from 2006 to 2019 were retrospectively analyzed. The following variables were investigated: age, sex, cause of fracture, the presence and state (impaction and angulation) of mandibular third molars, the site of mandibular fracture, and the presence of occlusal support for molars. Various risk factors for mandibular condylar head and subcondylar fractures were investigated. The majority of fractures were caused by a fall. The risk of mandibular subcondylar fractures was significantly higher in patients with occlusal support and mandibular third molars. The risk of mandibular condylar head fractures was significantly higher in patients without occlusal support or mandibular third molars. The position and angulation of mandibular third molars did not show significant difference between occurrences of head or subcondylar fractures. This study demonstrated that occlusal support and the presence of mandibular third molars significantly increased the risk of subcondylar fractures. One the contrary, their absence increased the risk of condylar head fractures.

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“…The stress distributions from traumatic loads applied on the symphyseal, parasymphyseal and mandibular body regions in elderly edentulous mandible were analyzed using FEA in another study. 31 It was found that traumatic load on the symphyseal region generated higher stress levels than the traumatic load on the parasymphyseal region. These results indicated that stress levels depend on the site (symphyseal, parasymphyseal, and mandibular body regions) and intensity of the load.…”

Section: Role Of Fea In Trauma and Fracturesmentioning

confidence: 99%

Finite element analysis: A boon to dentistry

Trivedi

2014

Journal of Oral Biology and Craniofacial Research

158

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a b s t r a c tThe finite element analysis (FEA) is an upcoming and significant research tool for biomechanical analyses in biological research. It is an ultimate method for modeling complex structures and analyzing their mechanical properties. In Implantology, FEA has been used to study the stress patterns in various implant components and also in the peri-implant bone. It is also useful for studying the biomechanical properties of implants as well as IntroductionThe finite element analysis (FEA) is an upcoming and significant research tool for biomechanical analyses in biological research. It is an ultimate method for modeling complex structures and analyzing their mechanical properties. FEA has now become widely accepted as a non-invasive and excellent tool for studying the biomechanics and the influence of mechanical forces on the biological systems. It enables the visualization of superimposed structures, and the stipulation of the material properties of anatomic craniofacial structures. 1 It also allows to establish the location, magnitude, and direction of an applied force, as it may also assign stress points that can be theoretically measured. 2 Further, as it does not affect the physical properties of the analyzed materials it is easily repeatable. 2,3The finite element method (FEM) is basically a numerical method of analyzing stresses and deformations in the structures of any given geometry. The structure is discretized into the so called 'finite elements' connected through nodes. The type, arrangement and total number of elements impact the accuracy of the results. 4 The steps followed are generally constructing a finite element model, followed by specifying appropriate material properties, loading and boundary conditions so that the desired settings can be accurately simulated. Various engineering software packages are available to model and simulate the structure of interest may be implants or jawbone. Previously, when FEA was used in dentistry, various simplified assumptions were made regarding modeling geometry, load, boundaries and material properties.5 Such assumptions inevitably affected the analytical results. In the human body, there are individual variations with respect to E-mail address: shilpa.knp@gmail.com.Available online at www.sciencedirect.com ScienceDirect journal homepage: www.e lsevier.com/locate/jobcr j o u r n a l o f o r a l b i o l o g y a n d c r a n i o f a c i a l r e s e a r c h 4 ( 2 0 1 4 ) 2 0 0 e2 0 3http://dx

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Finite-Element Analysis of 3 Situations of Trauma in the Human Edentulous Mandible

Cited by 28 publications

References 20 publications

Evaluating the biomechanical effects of implant diameter in case of facial trauma to an edentulous atrophic mandible: a 3D finite element analysis

Evaluating the biomechanical effects of implant diameter in case of facial trauma to an edentulous atrophic mandible: a 3D finite element analysis

Do the Presence of Mandibular Third Molar and the Occlusal Support Affect the Occurrence and the Mode of Mandibular Condylar Fractures?

Finite element analysis: A boon to dentistry

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