title: Effect of Framework in an Implant-Supported Full-Arch Fixed Prosthesis: 3D Finite Element Analysis.
abstract: OBJECTIVE
  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.
  
  
  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.
  
  
  CONCLUSIONS
  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.forename: Maria
authors.initials: M
authors.lastname: Menini
authors.forename: Paolo
authors.initials: P
authors.lastname: Pesce
authors.forename: Marco
authors.initials: M
authors.lastname: Bevilacqua
authors.forename: Francesco
authors.initials: F
authors.lastname: Pera
authors.forename: Tiziano
authors.initials: T
authors.lastname: Tealdo
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Barberis
authors.forename: Paolo
authors.initials: P
authors.lastname: Pera
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D001696:Biomechanical Phenomena; D001732:Bite Force; D002244:Carbon / Q000737:chemistry; D000077482:Carbon Fiber; D003198:Computer Simulation; D003722:Dental Alloys / Q000737:chemistry; D015921:Dental Implants; D003764:Dental Materials / Q000737:chemistry; D019094:Dental Prosthesis, Implant-Supported; D003779:Denture Design; D003824:Denture, Complete; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008422:Materials Testing; D008437:Maxilla / Q000503:physiopathology; D008954:Models, Biological; D013314:Stress, Mechanical; D014584:User-Computer Interface
chemical_list: D000180:Acrylic Resins; D000077482:Carbon Fiber; D003722:Dental Alloys; D015921:Dental Implants; D003764:Dental Materials; D002244:Carbon