Impact of the lower third molar presence and position on the fragility of mandibular angle and condyle: A Three-dimensional finite element study

Antic, Svetlana; Vukićević, Arso M.; Milasinovic, Marko; Šaveljić, Igor; Jovičić, Gordana; Filipović, Nenad; Rakocevic, Zoran; Djurić, Marija

doi:10.1016/j.jcms.2015.03.025

Cited by 48 publications

(58 citation statements)

References 32 publications

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“…These muscles were modelled with no resistance during compression. Muscle tension stiffness values were reported previously in the literature: masseter muscle (16.35 N/mm), medial pterygoid muscle (15 N/mm), lateral pterygoid muscle (12 N/mm), anterior temporal muscle (14 N/mm) and posterior temporal muscle (13 N/mm) [10]. Traumatic force of 2000 N was applied perpendicularly to the frontal region on a 1 cm diameter circular area (Fig 1d).…”

Section: Methodsmentioning

confidence: 88%

“…Traumatic force of 2000 N was applied perpendicularly to the frontal region on a 1 cm diameter circular area (Fig 1d). In previous FEA studies, force magnitude of 2000 N was used as a representative of a punch [10, 17]. …”

Section: Methodsmentioning

confidence: 99%

“…The biomechanical behaviour of the mandible is important to know to understand the mechanism of fractures and to optimize treatment scenarios [9]. Clinically, the pattern of mandible fracture is related to various causes such as intensity and direction of the force, location of the impact point, position of the mandible at the time of injury, biomechanical properties of the mandible, overlying soft tissue, and the presence of teeth [10]. Although many studies have been reported that focused on these topics, declarations relating to the impacts of implant number, diameter, design, and length on the weakening of the atrophic edontulous mandible are rare and not depend on biomechanical evidence.…”

Section: Introductionmentioning

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: Methodsmentioning

confidence: 88%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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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“…In order to estimate a risk from skull fracture, it was necessary to adopt the limiting values of compressive and tensile stresses of cortical bone. In the present study, the adopted values of compressive and tensile ultimate strength were σ cs = 133 MPa and σ ts = 92 MPa, respectively (Antic et al, 2015). The four FEA models were discretized into the fine volume mesh, using the linear tetrahedron elements (Tet4) available in ANSYS Meshing module.…”

Section: Methodsmentioning

confidence: 99%

“…Material characteristics of the bone, teeth and intracranial contents were taken from the literature (Mao et al, 2013; Asgharpour et al, 2014; Antic et al, 2015; Song et al, 2015) and are shown in Table 1. The cortical bone, diploe, dura, ventricles and teeth were modeled as linear elastic material, described with Young's modulus (E), Poisson's ratio (ν) and density.…”

Section: Methodsmentioning

confidence: 99%

Trauma of the Frontal Region Is Influenced by the Volume of Frontal Sinuses. A Finite Element Study

et al. 2017

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Anatomy of frontal sinuses varies individually, from differences in volume and shape to a rare case when the sinuses are absent. However, there are scarce data related to influence of these variations on impact generated fracture pattern. Therefore, the aim of this study was to analyse the influence of frontal sinus volume on the stress distribution and fracture pattern in the frontal region. The study included four representative Finite Element models of the skull. Reference model was built on the basis of computed tomography scans of a human head with normally developed frontal sinuses. By modifying the reference model, three additional models were generated: a model without sinuses, with hypoplasic, and with hyperplasic sinuses. A 7.7 kN force was applied perpendicularly to the forehead of each model, in order to simulate a frontal impact. The results demonstrated that the distribution of impact stress in frontal region depends on the frontal sinus volume. The anterior sinus wall showed the highest fragility in case with hyperplasic sinuses, whereas posterior wall/inner plate showed more fragility in cases with hypoplasic and undeveloped sinuses. Well-developed frontal sinuses might, through absorption of the impact energy by anterior wall, protect the posterior wall and intracranial contents.

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Application of Computational Methods in Dentistry

Mihajlović

Vukićević

Filipović

2021

Computational Modeling and Simulation Examples in Bioengineering

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Impact of the lower third molar presence and position on the fragility of mandibular angle and condyle: A Three-dimensional finite element study

Cited by 48 publications

References 32 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

Trauma of the Frontal Region Is Influenced by the Volume of Frontal Sinuses. A Finite Element Study

Application of Computational Methods in Dentistry

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