Biomechanical effects of surgical cut direction in unilateral mandibular lengthening by distraction osteogenesis using a finite element model

Influence of different orientations and rates of bidirectional distraction osteogenesis of the mandibular corpus: a three-dimensional study

“…Both directions resulted in upward rotation of the mandible and in agreement with Tehranchi et al, 10 who mentioned that a vertical surgical cut will result in a clockwise rotation of the mandible, and upward movement of the mandible was higher when the force was applied parallel to the inferior border of the mandible, which is logical as in this direction the force has a vertical component which results in a more upward rotation of the mandible, and z-displacement was more prominent than x and y-displacement. Certainly the displacement and stress values increase as the force amount increases.…”

“…The maximum stress value for 0.5mm distraction for both orientations were near ultimate tensile stress for bone (135 MP) while for 1mm and 1.5mm were higher than the ultimate value in both directions, when the bone was not amenable enough to withstand such The bone in the distracted site was seen to move in a non-parallel manner. The displacement in all three directions, x, y, and z, for both orientations was prominent in the anterior part of the mandible, in agreement with Tehranchi et al, 10 who found that at this site of osteotomy the movement was prominent in the pogonion, while the movement in the posterior part was negligible, although the force was applied in a bidirectional manner. As such the distal component of the force is considered to be a wasted component and produces unwanted stress in the temporomandibular joint.…”

The Stress Concentration and Biomechanical Properties of the Intraoral Distractors and the Extraoral Distractors Used in Treatment of Hemifacial Microsomia Patients: A Simulation Finite Element Analysis Study

“…Li et al 13 assessed the stress induced by the distraction osteogenesis on the mandibular condyle by finite element analysis. Tehranchi et al 14 assessed the effect of different osteotomies either vertical, horizontal, or oblique on the final lengthening gained by distraction osteogenesis using finite element analysis. Gao et al 15 used finite element analysis to optimize the ratio between the 2 distracted segments in preimplant ridge augmentation.…”

The Stress Concentration and Biomechanical Properties of the Intra-oral Distractors and the Extra-oral Distractors Used in Treatment of Post Ankylosis Facial Asymmetric Patients: A Finite Element Analysis Study

“…Freddo et al 13 used this technology to evaluate the effect of the mastication on the bone regenerate generated by distraction osteogenesis. Tehranchi et al 14 evaluated the effect of osteotomies orientation either being vertical, horizontal, or oblique on the achieved lengthening gained by distraction osteogenesis. Wang et al 15 evaluated the effect of unilateral distraction osteogenesis on the nondistracted side using finite element analysis.…”