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Customized mandibular reconstruction plates improve mechanical performance in a mandibular reconstruction model

 
: Gutwald, R.; Jaeger, R.; Lambers, F.M.

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Computer methods in biomechanics and biomedical engineering 20 (2017), Nr.4, S.426-435
ISSN: 1025-5842
ISSN: 1476-8259
Englisch
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IWM ()
mandibular reconstruction; sensitivity analysis; finite element analysis; fatigue testing; implant

Abstract
The purpose of this paper was to analyze the biomechanical performance of customized mandibular reconstruction plates with optimized strength. The best locations for increasing bar widths were determined with a sensitivity analysis. Standard and customized plates were mounted on mandible models and mechanically tested. Maximum stress in the plate could be reduced from 573 to 393 MPa (−31%) by increasing bar widths. The median fatigue limit was significantly greater (p < 0.001) for customized plates (650 ± 27 N) than for standard plates (475 ± 27 N). Increasing bar widths at case-specific locations was an effective strategy for increasing plate fatigue performance.

: http://publica.fraunhofer.de/dokumente/N-462095.html