Biomechanical Considerations of The Combined Cement- and Screw-Retained Implant-Supported Zirconia Crowns: A 3D-FEA

Yıl 2018, Cilt: 2 Sayı: 1, 7 - 7, 07.10.2018

Mesut Tuzlalı , Volkan Arısan

Öz

Introduction: In
prosthetic dentistry, dental implants are a popular and effective way to
replace missing teeth. In implant-supported fixed dental restorations, there
are two prosthetic fixation options: screw-retained or cement-retained. Although
both treatment options can be used predictably, they each have their own
advantages, disadvantages, and limitations. Aim of this study is to
evaluate the biomechanical features of hybrid cement-screw retained prosthesis
system by using the 3D finite element method.

Materials and Methods: Three
3-dimensional CAD model of a single dental implant and their screw-retained,
cement-retained, and cement-screw-retained implant-supported zirconium-based
crowns with their components were constructed. An average occlusal
force of 100 N were applied in an oblique (45⁰) direction buccolingually and
mesiodistally (distal fossa area 1 mm2). Then the values of the
stresses generated in the prosthesis, abutment, implant, and supporting
alveolar bone were calculated using 3-dimensional finite element analysis.

Results: Stresses
were greater in cement-retained than screw-retained and cement-screw-retained.
The amount of stress in the cement- and screw-retained system was cement and
screw system.

Discussion: Within
the limitations of the investigation, it was determined that retention system
changes affected the force distribution.

Conclusion: The
obtained results could prove useful for implantologists. Although in vitro
mechanical tests are valuable aids in the comparison of restoration properties,
data obtained from these studies are useful for comparative purposes only, and
direct extrapolation to the clinical situation should be made with caution and
supported with long-term clinical studies.

Keywords: The
Combined Cement- and Screw-Retained Implant-Supported, 3-dimensional finite
element analysis, zirconia crowns.

Anahtar Kelimeler

The Combined Cement- and Screw-Retained Implant-Supported, 3-dimensional finite element analysis, zirconia crowns

Kaynakça

• References