Finite element stress analysis of Ti-6Al-4V and partially stabilized zirconia dental implant during clenching

Publisher:
Informa
Publication Type:
Journal Article
Citation:
Acta Odontologica Scandinavica, 2012, 70 (5), pp. 353 - 361
Issue Date:
2012-01
Full metadata record
Files in This Item:
Filename Description Size
Thumbnail2011004126OK.pdf500.94 kB
Adobe PDF
Objective. The purpose of this paper is to compare the differences in stress between Ti-6Al-4V and PS-ZrO2 dental implant during clenching and whether these changes are clinically signi?cant to limit the use of zirconia in oral implantology. Materials and methods. The model geometry was derived from position measurements taken from 28 diamond blade cut cross-sections of an average size human adult edentulous mandible and generated using a special sequencing method. Data on anatomical, structural, functional aspects and material properties were obtained from measurements and published data. Ti- 6Al-4V and PS-ZrO2 dental implants were modelled as cylindrical structure with a diameter of 3.26 mm and length of 12.00 mm was placed in the ?rst molar region on the right hemimandible. Results. The analysis revealed an increase of 23% in the averaged tensile and compressive stress and an increase of 8% in the averaged Von Mises stress were recorded in the boneimplant interface when PS-ZrO2 dental implant was used instead of Ti-6Al-4V dental implant. The results also revealed only relatively low levels of stresses were transferred from the implant to the surrounding cortical and cancellous bone, with the majority of the stresses transferred to the cortical bone. Conclusion. Even though high magnitudes of tensile, compressive and Von Mises stresses were recorded on the Ti-6Al-4V and PS-ZrO2 dental implants and in the surrounding osseous structures, the stresses may not be clinically critical since the mechanical properties of the implant material and the cortical and cancellous bone could withstand stress magnitudes far greater than those recorded in this analysis.
Please use this identifier to cite or link to this item: