PURPOSE: The aim of this study was to analyze through a three-dimensional finite element analysis (3D-FEA) stress distribution on four implants supporting a full-arch implant-supported fixed prosthesis (FFP) using different prosthesis designs. MATERIALS AND METHODS: A 3D edentulous maxillary model was created and four implants were virtually placed into the maxilla and splinted, simulating an FFP without framework, with a cast metal framework, and with a carbon fiber framework. An occlusal load of 150 N was applied, stresses were transmitted into peri-implant bone, and prosthodontic components were recorded. RESULTS: 3D-FEA revealed higher stresses on the implants (up to +55.16%), on peri-implant bone (up to +56.93%), and in the prosthesis (up to +70.71%) when the full-acrylic prosthesis was simulated. The prosthesis with a carbon fiber framework showed an intermediate behavior between that of the other two configurations. CONCLUSION: This study suggests that the presence of a rigid framework in full-arch fixed prostheses provides a better load distribution that decreases the maximum values of stress at the levels of implants, prosthesis, and maxillary bone.
PURPOSE: The aim of this study was to analyze through a three-dimensional finite element analysis (3D-FEA) stress distribution on four implants supporting a full-arch implant-supported fixed prosthesis (FFP) using different prosthesis designs. MATERIALS AND METHODS: A 3D edentulous maxillary model was created and four implants were virtually placed into the maxilla and splinted, simulating an FFP without framework, with a cast metal framework, and with a carbon fiber framework. An occlusal load of 150 N was applied, stresses were transmitted into peri-implant bone, and prosthodontic components were recorded. RESULTS: 3D-FEA revealed higher stresses on the implants (up to +55.16%), on peri-implant bone (up to +56.93%), and in the prosthesis (up to +70.71%) when the full-acrylic prosthesis was simulated. The prosthesis with a carbon fiber framework showed an intermediate behavior between that of the other two configurations. CONCLUSION: This study suggests that the presence of a rigid framework in full-arch fixed prostheses provides a better load distribution that decreases the maximum values of stress at the levels of implants, prosthesis, and maxillary bone.
Authors: Otávio Augusto Luitz Jaros; Geraldo Alberto Pinheiro De Carvalho; Aline Batista Gonçalves Franco; Simone Kreve; Paulo Augusto Batista Lopes; Sergio Cândido Dias Journal: J Int Soc Prev Community Dent Date: 2018-10-08
Authors: Mario Dioguardi; Camilla Stellacci; Lucia La Femina; Francesca Spirito; Diego Sovereto; Enrica Laneve; Massimo Francesco Manfredonia; Alfonso D'Alessandro; Andrea Ballini; Stefania Cantore; Lorenzo Lo Muzio; Giuseppe Troiano Journal: Medicina (Kaunas) Date: 2022-07-04 Impact factor: 2.948
Authors: Maria Menini; Francesco Bagnasco; Ivan Calimodio; Nicolò Di Tullio; Francesca Delucchi; Domenico Baldi; Francesco Pera Journal: Biomed Res Int Date: 2020-08-05 Impact factor: 3.411