The biomechanical effect of mandibular functional flexure on stress build-up in implant-supported fixed restorations is discussed. The relative deformations and stress distributions in six different designs of implant-supported prosthetic systems (six or four implants, with or without distal cantilevers, cross-arch or midline-divided bar into two free-standing bridges) were analysed by a three-dimensional finite element (FE) model of a human edentulous mandible. A significant amount of stress in the more distal implants and the superstructure at the symphysis arises as a consequence of mandible functional flexure. The analysis of the stress distributions generated by the different restorative patterns suggests that a division of the superstructure at the level of the symphysis significantly restores the natural functional flexure of the mandible.
|Titolo:||MANDIBULAR FLEXURE AND STRESS BUILD-UP IN MANDIBULAR FULL-ARCH FIXED PROSTHESES SUPPORTED BY OSSEOINTEGRATED IMPLANTS|
|Autori interni:||AVERSA, Raffaella|
|Data di pubblicazione:||2003|
|Rivista:||CLINICAL ORAL IMPLANTS RESEARCH|
|Appare nelle tipologie:||1.1 Articolo in rivista|