title: Finite element modeling for development and optimization of a bone plate for mandibular fracture in dogs.
abstract: 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.
authors.affiliation: Department of Veterinary Surgery and Anesthesiology, College of Veterinary Medicine and Animal Science, São Paulo State University, Botucatu, SP, Brazil. eliperezfr@yahoo.com.br
authors.forename: Elisângela P
authors.initials: EP
authors.lastname: Freitas
authors.forename: Sheila C
authors.initials: SC
authors.lastname: Rahal
authors.forename: Marco Antonio
authors.initials: MA
authors.lastname: Gioso
authors.forename: Luiz Carlos
authors.initials: LC
authors.lastname: Vulcano
authors.forename: Antonio Carlos
authors.initials: AC
authors.lastname: Shimano
authors.forename: Jorge Vicente Lopes
authors.initials: JV
authors.lastname: da Silva
authors.forename: Pedro Y
authors.initials: PY
authors.lastname: Noritomi
authors.forename: Alexander O
authors.initials: AO
authors.lastname: El Warrak
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D001860:Bone Plates / Q000592:standards / Q000662:veterinary*; D002102:Cadaver; D003198:Computer Simulation; D003799:Dental Stress Analysis / Q000662:veterinary; D004285:Dogs; D020342:Finite Element Analysis; D005593:Fracture Fixation, Internal / Q000295:instrumentation / Q000379:methods / Q000662:veterinary; D021621:Imaging, Three-Dimensional; D019248:Jaw Fixation Techniques / Q000295:instrumentation / Q000662:veterinary*; D016014:Linear Models; D008297:Male; D008337:Mandibular Fractures / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary*; D013718:Tensile Strength; D014057:Tomography, X-Ray Computed / Q000662:veterinary