Publication: Influence of Connection Type and Platform Diameter on Titanium Dental Implants Fatigue: Non-Axial Loading Cyclic Test Analysis
Authors
Nicolás Silvente, Ana Isabel ; Velasco Ortega, E. ; Gil, J. ; Lopez Lopez, J. ; Jimenez-Guerra, Alvaro ; Monsalve-Guil, Loreto ; Ayuso-Montero, Raúl ; Ortiz-García, Ivan
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info:eu-repo/semantics/article
Description
© 2020. This manuscript version is made available under the CC-BY-4.0 license http://creativecommons.org/licenses/by/4.0/
This document is the Published Manuscript version of a Published Work that appeared in final form in International Journal of Environmental Research and Public Health. To access the final edited and published work see doi:10.3390/ijerph17238988
Abstract
Two-pieces dental implants must provide stability of the implant-abutment-interface.
The connection type and platform diameter could influence the biomechanical resistance and stress
distribution. This study aims to evaluate the fatigue for different types of connections, external and
internal, and different platform diameters. Three implant designs with the same length were used:
(a) external hexagon/narrow platform; (b) internal double hexagon/narrow platform; (c) internal
octagon/regular platform. A fatigue test was developed to establish the number of cycles needed
before fracture. A 30º oblique load with a sinusoidal function of fatigue at a frequency of 15 Hz and
10% stress variation was applied to each system. The fatigue load limit (FLL) for design (a) was 190 N,
being the nominal-curvature-moment (NCM) = 1.045; FLL = 150 N, with a NCM = 0.825 for (b), and
FLL = 325 N, with a NCM = 1.788 for (c). The platform diameter affects the FLL, obtaining lower FLL
on a narrow platform. The connection type interferes with the implant walls’ width, especially in
narrow implants, making internal connections more unstable at this level. Long-term clinical studies
to assess the restoration’s success rate and survival are mandatory.
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Citation
International Journal of Environmental Research and Public Health, nº 17 -8988
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