Biomechanical comparison of implant retained fixed partial dentures with fiber reinforced composite versus conventional metal frameworks: A 3D FEA study
(Erkmen, Erkan.)
Bibliographical information (record 265479)
Biomechanical comparison of implant retained fixed partial dentures with fiber reinforced composite versus conventional metal frameworks: A 3D FEA study
- Fiber reinforced composite (FRC) materials have been successfully used in a variety of
commercial applications. These materials have also been widely used in dentistry. The use
of fiber composite technology in implant prostheses has been previously presented, since
they may solve many problems associated with metal alloy frameworks such as corrosion,
complexity of fabrication and high cost. The hypothesis of this study was that an FRC
framework with lower flexural modulus provides more even stress distribution throughout
the implant retained fixed partial dentures (FPDs) than a metal framework does. A 3-
dimensional finite element analysis was conducted to evaluate the stress distribution in
bone, implant–abutment complex and prosthetic structures. Hence, two distinctly different
models of implant retained 3-unit fixed partial dentures, composed of Cr–Co and porcelain
(M-FPD model) or FRC and particulate composite (FRC-FPD model) were utilized. In separate
load cases, 300 N vertical, 150 N oblique and 60 N horizontal forces were simulated. When
the FRC-FPD and M-FPD models were compared, it was found that all investigated stress
values in the M-FPD model were higher than the values in the FRC-FPD model except for
the stress values in the implant–abutment complex.
It can be concluded that the implant supported FRC-FPD could eliminate the excessive
stresses in the bone–implant interface and maintain normal physiological loading of the
surrounding bone, therefore minimizing the risk of peri-implant bone loss due to stress-shielding.
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