Finite Element Modeling for Development and Optimization of a Bone Plate for Mandibular Fracture in Dogs

This study aimed to develop a plate to treat fractures of the mandibular body in dogs and to validate the project using finite elements and biomechanical essays. Mandible prototypes were produced with 10 oblique ventrorostral fractures (favorable) and 10 oblique ventrocaudal fractures (unfavorable)....

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Bibliographic Details
Published in:Journal of veterinary dentistry 2010-12, Vol.27 (4), p.212-221
Main Authors: Freitas, Elisângela P., Rahal, Sheila C., Gioso, Marco Antonio, Vulcano, Luiz Carlos, Shimano, Antonio Carlos, da Silva, Jorge Vicente Lopes, Noritomi, Pedro Y., Warrak, Alexander O. El
Format: Article
Language:English
Subjects:
Animals
Biomechanical Phenomena
Bone Plates - standards
Bone Plates - veterinary
Cadaver
Computer Simulation
Dental Stress Analysis - veterinary
Dentistry
Dogs
Finite Element Analysis
Fracture Fixation, Internal - instrumentation
Fracture Fixation, Internal - methods
Fracture Fixation, Internal - veterinary
Imaging, Three-Dimensional
Jaw Fixation Techniques - instrumentation
Jaw Fixation Techniques - veterinary
Linear Models
Male
Mandibular Fractures - diagnosis
Mandibular Fractures - surgery
Mandibular Fractures - veterinary
Tensile Strength
Tomography, X-Ray Computed - veterinary
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Summary:This study aimed to develop a plate to treat fractures of the mandibular body in dogs and to validate the project using finite elements and biomechanical essays. Mandible prototypes were produced with 10 oblique ventrorostral fractures (favorable) and 10 oblique ventrocaudal fractures (unfavorable). Three groups were established for each fracture type. Osteosynthesis with a pure titanium plate of double-arch geometry and blocked monocortical screws of free angulation were used. The mechanical resistance of the prototype with unfavorable fracture was lower than that of the favorable fracture. In both fractures, the deflection increased and the relative stiffness decreased proportionally to the diminishing screw number. The finite element analysis validated this plate study, since the maximum tension concentration observed on the plate was lower than the resistance limit tension admitted by the titanium. In conclusion, the double-arch geometry plate fixed with blocked monocortical screws has sufficient resistance to stabilize oblique fractures, without compromising mandibular dental or neurovascular structures.
ISSN:0898-7564
2470-4083
DOI:10.1177/089875641002700402