Computerized analysis of resorbable polymer plates and screws for the rigid fixation of mandibular angle fractures

Comparison of different fixation methods following sagittal split ramus osteotomies using three-dimensional finite elements analysis

“…Bony stabilization has progressed from wire osteosynthesis and maxillo-mandibular fixation (IMF) to metal plates and screws and various combinations of both referred to as ''Rigid Internal Fixation'' 10,36 . Potential problems with the IMF are well known and include compromised oral airway and related lung problems, inadequate nutritional intake with weight loss, temporomandibular joint articular cartilage thinning or ankylosis, and patient noncompliance 14,28,31 . Sagittal split osteotomies of the mandible are often stabilized by a rigid fixation system.…”

“…One of the therapeutic goals of this kind of fixation is to obtain uncomplicated bone healing, so as to prevent any relapse 24,31 . Relapse after the BSSRO is a well-known phenomenon as much as a 50% relapse of the surgical repositioning has been reported 37 .…”

Comparison of Stability of Fracture Segments in Mandible Fracture Treated with Different Designs of Mini-Plates Using FEM Analysis

“…Stability is required for appropriate osteogenesis and bone healing [3]. The vectorial summation of 3D translational displacements of the nodes on the fracture section gives the separation or gap distance, i.e., the movements in the X, Y, and Z directions (Fig.…”

“…Ideally, plate fixation should result in undisturbed primary fracture healing. Such healing is only possible if the displacement between the fracture surfaces is within the range of 100-150 lm [3,26,27].…”

“…High bending moments at the body caused by bite forces on the incisors pose a challenging problem for any fixation appliance [3]. Therefore, a complete fracture on the right side body of the mandible was selected for this investigation.…”