TY - JOUR
AR - DOBCR-2020-4-102
TI - Evaluation of Zirconia and Cobalt-Chrome for Custom-Milled Framework Design for an Implant-Supported Full-Arch Fixed Dental Prosthesis: A Finite Element Analysis
AU - Datte , CE
AU - Silveira , MPM
AU - de Andrade , GS
AU - Bottino , MA
AU - Borges , ALS
AU - Dal Piva , AMO
AU - João Paulo , Mendes Tribst
JO - Dental Oral Biology and Craniofacial Research
PY - 2020
DA - Fri 28, Aug 2020
SN - 2613-4950
DO - http://dx.doi.org/10.31487/j.DOBCR.2020.04.02
UR - https://www.sciencerepository.org/evaluation-of-zirconia-and-cobalt-chrome-for-custom-milled-framework_DOBCR-2020-4-102 
KW - Finite element analysis, dental implants, prosthesis, zirconia
AB - The demands for aesthetics in implant-supported full-arch prosthesis increased the use of zirconia as
framework material due to its aesthetics, biocompatibility and high survival rate. The aim of this study was
to compare the mechanical response of Zirconia and CoCr custom-milled framework indicated for maxillary
prosthetic rehabilitations using the Finite Element Method. To perform this simulation, a custom-milled
framework design for an implant-supported full-arch fixed dental prosthesis was used. The geometries of
bone, prosthesis, implants, abutments and prosthetic screw were modelled. The mechanical properties for
each isotropic and homogeneous material were simulated. Two frameworks were simulated (YZTP and
CoCr Alloy). A load of 500 N load was applied on the occlusal surface of the right upper first molar. The
results were analysed in terms of displacement, von Mises stress and microstrain. After the simulation
processing, it was not possible to observe difference for prosthesis displacement or stress concentration
regarding the framework material. The use of YTZP exhibited the lowest stress magnitude for implant (60
MPa) near the load application site, in comparison with the metallic framework (76 MPa in the same region).
The same behaviour was calculated for the microstrain results in peri-implant region. The use of YZTP to
perform a custom-milled framework design for an implant-supported full-arch fixed dental prosthesis may
have acceptable mechanical response for the analysed structures.