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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Bridging Plate Development for Treatment of Segmental Bone Defects of the Canine Mandible: Mechanical Tests and Finite Element Method

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Author(s):
de Freitas, Elisangela Perez ; Rahal, Sheila Canevese ; Shimano, Antonio Carlos ; Lopes da Silva, Jorge Vicente ; Noritomi, Pedro Yoshito ; El-Warrak, Alexander Oliveira ; Melchert, Alessandra
Total Authors: 7
Document type: Journal article
Source: JOURNAL OF VETERINARY DENTISTRY; v. 33, n. 1, p. 18-25, MAR 2016.
Web of Science Citations: 1
Abstract

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 plate-mandible system resists the bite forces in all dog breeds. All safety factors were greater than 1 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. (AU)

FAPESP's process: 11/08610-7 - Finite element modeling for development and optimization of bridging plate for reconstruction of segmental mandibular defect in dogs
Grantee:Sheila Canevese Rahal
Support Opportunities: Regular Research Grants