Biomechanics of the canine mandible during bone transport distraction osteogenesis


This study compared biomechanical patterns between finite element models (FEMs) and a fresh dog mandible tested under molar and incisal physiological loads in order to clarify the effect of the bone transport distraction osteogenesis (BTDO) surgical process. Three FEMs of dog mandibles were built in order to evaluate the effects of BTDO. The first model evaluated the mandibular response under two physiological loads resembling bite processes. In the second model, a 5.0 cm bone defect was bridged with a bone transport reconstruction plate (BTRP). In the third model, new regenerated bony tissue was incorporated within the defect to mimic the surgical process without the presence of the device. Complementarily, a mandible of a male American foxhound dog was mechanically tested in the laboratory both in the presence and absence of a BTRP, and mechanical responses were measured by attaching rosettes to the bone surface of the mandible to validate the FEM predictions. The relationship between real and predicted values indicates that the stress patterns calculated using FEM are a valid predictor of the biomechanics of the BTDO procedures. The present study provides an interesting correlation between the stiffness of the device and the biomechanical response of the mandible affected for bone transport. Copyright © 2014 by ASME.


Palabras clave

Biomechanics, Bone, Finite element method, Physiology, Surgery, Biomechanical response, Bone surface, Distraction osteogenesis, Dog mandible, Mechanical response, Physiological loads, Reconstruction plates, Stress patterns, Physiological models, animal experiment, Article, biomechanics, bone defect, bone transport distraction osteogenesis, controlled study, distraction osteogenesis, dog, finite element analysis, in vitro study, incisor, male, mandible, molar tooth, nonhuman, rigidity, tissue regeneration, animal, biomechanics, mandible, mechanical stress, mechanics, surgery, Animals, Biomechanical Phenomena, Dogs, Finite Element Analysis, Male, Mandible, Mechanical Processes, Osteogenesis, Distraction, Stress, Mechanical