Surgery: Current Research

ISSN - 2161-1076

Biomechanical evaluation of different angle-Stable locking plate systems for mandibular surgery

6th International Conference and Exhibition on Anesthesia and Surgery

September 07-09, 2017 | London, UK

Olivier Lieger, Benoit Schaller, Alexander Burki and Philippe Buchler

University of Bern, Switzerland

Scientific Tracks Abstracts: Surgery Curr Res

Abstract :

Purpose: To compare the initial stability and stability after fatigue of three different locking systems (Synthes®, Stryker® and Medartis®) for mandibular fixation and reconstruction. Method: Standard mandible locking plates with identical profile height (1.5 mm), comparable length and screws with identical diameter (2.0 mm) were used. Plates were fixed with six screws according a preparation protocol. Four point bending tests were then performed using artificial bone material to compare their initial stability and failure limit under realistic loading conditions. Loading of the plates was performed using of a servo hydraulic driven testing machine. The stiffness of the implant/bone construct was calculated using a linear regression on the experimental data included in a range of applied moment between 2 Nm and 6 Nm. Results: No statistical difference in the elastic stiffness was visible between the three types of plate. However, differences were observed between the systems concerning the maximal load supported. The Stryker and Synthes systems were able to support a significantly higher moment. Conclusion: For clinical application all systems show good and reliable results. Practical aspects such as handling, possible angulation of screw fixation, possibility of screw/plate removal, etc. may favor one or the other plating system.

Biography :

Olivier Lieger, MD, DMD, is a faculty in the Department of Craniomaxillofacial Surgery at University of Bern, Inselspital, CH-3010 Bern, Switzerland.

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