A Three Dimensional Analysis of Reconstruction Plates used in Different Mandibular Defects

Atılgan, Serhat; Erol, Behçet; Yardımeden, Ahmet; Yaman, Ferhan; Ucan, Musa Can; Gunes, Nedim; Atalay, Yusuf; Köse, İsmail

doi:10.2478/v10133-010-0048-9

Cited by 17 publications

(10 citation statements)

References 19 publications

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“…Screw loosening is a common complication in maxillofacial reconstruction and osteosynthesis cases since excessive stress due to masticatory forces may result in bone resorbtion around the screws. 8,9 Although local stress peak normally will not lead to spontaneous damage to the hardware or screws, fatigue of materials may develop under masticatory forces. Clinical practice confirmed that hardware related complications possibly occur with function under masticatory forces.…”

Section: Discussionmentioning

confidence: 99%

Biomechanical Evaluation of Locking Reconstruction Plates Fixed with Three Versus Four Screws Perside for Lateral Segmental Defects of Mandible with A Servohydraulic Testing Method: An In Vitro Study Mandibular Lateral

Demir¹

2022

Turkiye Klinikleri J Dental Sci

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Section: Discussionmentioning

confidence: 99%

Biomechanical Evaluation of Locking Reconstruction Plates Fixed with Three Versus Four Screws Perside for Lateral Segmental Defects of Mandible with A Servohydraulic Testing Method: An In Vitro Study Mandibular Lateral

Demir¹

2022

Turkiye Klinikleri J Dental Sci

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“…The safety factor expresses the relation between von Mises tension and tension values considered as a limiting factor for failure by material plastification. 26 Thus, factor 1 means that the calculated von Mises tension and the experimental drainage tension value of the material are the same. 26 Values greater than 1 indicate a von Mises tension inferior to the drainage limit, whereas values between 0 and 1 represent a von Mises tension greater than the drainage limit of the material.…”

Section: Discussionmentioning

confidence: 99%

“…26 Thus, factor 1 means that the calculated von Mises tension and the experimental drainage tension value of the material are the same. 26 Values greater than 1 indicate a von Mises tension inferior to the drainage limit, whereas values between 0 and 1 represent a von Mises tension greater than the drainage limit of the material. [27][28][29] Based on this information, the most fragile part of the bridging plate will be able to resist a force greater than 2.79 before starting plastic phase of the titanium.…”

Section: Discussionmentioning

confidence: 99%

Bridging Plate Development for Treatment of Segmental Bone Defects of the Canine Mandible

et al. 2016

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With regard to the canine mandible, a mistaken concept of application is to assume that systemic plate-bone resistance is provided by the implant so that biomechanical position could be ignored. Because the alveolar border of the mandible is a tensile zone, the plate would ideally be positioned near this area while avoiding important structures. The aim of this study was to develop 2 bridging plates for the treatment of a segmental bone defect of the canine mandible using monocortical screws to avoid damage to the tooth roots and remaining neurovascular structures. Computed tomography images of the heads of 4 dogs (rottweiler, Doberman, boxer, and miniature poodle breeds) were used as models to develop the project. The images were reconstructed in 3-dimensional (3D) format. For each dog breed, 6 mandible prototypes were produced, each with a segmental bone defect in the right mandible. The mandibular reconstruction was performed with pure titanium bridging plate and locking screws. One plate model was developed for medium- and large-breed dogs and another for small-breed dogs. Mechanical testing showed the platemandible system resists the bite forces in all dog breeds. All safety factors were greater than I in the platemandible system for medium- and large-breed dogs and greater than 10 in the plate-mandible system for small-breed dogs. Thus, bridging plates designed with differentiated geometry and monocortical locking screws showed mechanical resistance to support simulated induced bone model defects and were able to support at least 5 times the value of bite force for each evaluated dog.

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“…Goulart et al 21 used FEM by applying von Mises yielding criteria for evaluating the effectiveness of using two plates instead of single for recovery of bone fractures and observed that two locking plates promoted a better mechanical resistance for complex mandible fractures. ANSYS software has also been used for FEM analysis by applying von Mises yielding criteria to evaluate mechanical stresses 22 in the plate by simulating masticatory forces in the human jaw to provide stress intensifiers and breaking points on the plate.…”

Section: Introductionmentioning

confidence: 99%

Efficiency of nanoparticle reinforcement using finite element analysis of titanium alloy mandible plate

Jindal

Worcester

Gupta

et al. 2019

Proc Inst Mech Eng H

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Abbreviations:(NPs) Nanoplatlets (NTs) Nanotubes Nanoparticles in the form nanotubes and nanoplatlets have been compared for Von Mises stresses by using them as low composition reinforcements in Titanium alloy based mandible plate for different compositions and orientations.A Finite Element Model (FEM) has been designed to reconstruct a fractured human mandible with a Titanium alloy mandible plate. A 500N compressive force was applied on the mandible and stress distribution across the plate sections was analysed for aligned 2D random and 3D random orientations for both tubes and platlets. Carbon material as graphene has been used for tube and platlet in the form of Nanotubes (NTs) and Nanoplatlets (NPs) respectively. Using properties of graphene as the filler in Titanium alloy plate, for both NPs and NTs, the stresses reduced between 5% to 25% for NPs and NTs Graphene-Titanium composite plates in comparison to pure plates, at critically stressed sections. NTs exhibited stress reduction of nearly 23.4 % for aligned configurations while NPs exhibited stress reduction up to 21.2 % for 2D and 3D random configurations in comparison to pure Titanium plates. Hence, it has been suggested that nanotubes exhibited superior mechanical reinforcement potential beyond that of nanoplatelets for aligned, while nanoplatelets provided enhanced mechanical reinforcements for random configurations. Therefore, for biomedical implant applications nanocomposite materials can be designed with the same dimensional form but with lower compositions of filler materials by simply manipulating the appropriate orientations.

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A Three Dimensional Analysis of Reconstruction Plates used in Different Mandibular Defects

Cited by 17 publications

References 19 publications

Biomechanical Evaluation of Locking Reconstruction Plates Fixed with Three Versus Four Screws Perside for Lateral Segmental Defects of Mandible with A Servohydraulic Testing Method: An In Vitro Study Mandibular Lateral

Biomechanical Evaluation of Locking Reconstruction Plates Fixed with Three Versus Four Screws Perside for Lateral Segmental Defects of Mandible with A Servohydraulic Testing Method: An In Vitro Study Mandibular Lateral

Bridging Plate Development for Treatment of Segmental Bone Defects of the Canine Mandible

Efficiency of nanoparticle reinforcement using finite element analysis of titanium alloy mandible plate

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