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Mandibular flexure and stress build‐up in mandibular full‐arch fixed prostheses supported by osseointegrated implants
Author(s) -
Zarone Fernando,
Apicella Antonio,
Nicolais Luigi,
Aversa Raffaella,
Sorrentino Roberto
Publication year - 2003
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1034/j.1600-0501.2003.140114.x
Subject(s) - symphysis , mandibular symphysis , mandible (arthropod mouthpart) , osseointegration , arch , stress (linguistics) , orthodontics , implant , dentistry , materials science , medicine , structural engineering , anatomy , engineering , biology , surgery , linguistics , philosophy , botany , genus
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.