<div class="csl-bib-body">
<div class="csl-entry">Zupancic Cepic, L., Frank, M., Reisinger, A., Pahr, D., Zechner, W., & Schedle, A. (2022). Biomechanical finite element analysis of short-implant-supported, 3-unit, fixed CAD/CAM prostheses in the posterior mandible. <i>International Journal of Implant Dentistry</i>, <i>8</i>(1), Article 8. https://doi.org/10.1186/s40729-022-00404-8</div>
</div>
-
dc.identifier.issn
2198-4034
-
dc.identifier.uri
http://hdl.handle.net/20.500.12708/150273
-
dc.description.abstract
OBJECTIVE: To assess the biomechanical effects of different prosthetic/implant configurations and load directions on 3-unit fixed prostheses supported by short dental implants in the posterior mandible using validated 3-D finite element (FE) models.
METHODS: Models represented an atrophic mandible, missing the 2nd premolar, 1st and 2nd molars, and rehabilitated with either two short implants (implant length-IL = 8 mm and 4 mm) supporting a 3-unit dental bridge or three short implants (IL = 8 mm, 6 mm and 4 mm) supporting zirconia prosthesis in splinted or single crowns design. Load simulations were performed in ABAQUS (Dassault Systèmes, France) under axial and oblique (30°) force of 100 N to assess the global stiffness and forces within the implant prosthesis. Local stresses within implant/prosthesis system and strain energy density (SED) within surrounding bone were determined and compared between configurations.
RESULTS: The global stiffness was around 1.5 times higher in splinted configurations vs. single crowns, whereby off-axis loading lead to a decrease of 39%. Splinted prostheses exhibited a better stress distribution than single crowns. Local stresses were larger and distributed over a larger area under oblique loads compared to axial load direction. The forces on each implant in the 2-implant-splinted configurations increased by 25% compared to splinted crowns on 3 implants. Loading of un-splinted configurations resulted in increased local SED magnitude.
CONCLUSION: Splinting of adjacent short implants in posterior mandible by the prosthetic restoration has a profound effect on the magnitude and distribution of the local stress peaks in peri-implant regions. Replacing each missing tooth with an implant is recommended, whenever bone supply and costs permit.
en
dc.language.iso
en
-
dc.publisher
SpringerOpen
-
dc.relation.ispartof
International Journal of Implant Dentistry
-
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
-
dc.subject
Computer-Aided Design
en
dc.subject
Finite Element Analysis
en
dc.subject
Mandible
en
dc.subject
Biomechanics
en
dc.subject
Fixed implant-supported prostheses
en
dc.subject
Functional load
en
dc.subject
Prosthetic design parameters
en
dc.subject
Short dental implants
en
dc.subject
Artificial Limbs
en
dc.subject
Dental Implants
en
dc.title
Biomechanical finite element analysis of short-implant-supported, 3-unit, fixed CAD/CAM prostheses in the posterior mandible
en
dc.type
Article
en
dc.type
Artikel
de
dc.rights.license
Creative Commons Namensnennung 4.0 International
de
dc.rights.license
Creative Commons Attribution 4.0 International
en
dc.identifier.pmid
35147791
-
dc.contributor.affiliation
Medical University of Vienna, Austria
-
dc.contributor.affiliation
Karl Landsteiner University of Health Sciences, Austria
-
dc.contributor.affiliation
Karl Landsteiner University of Health Sciences, Austria