dc.contributor.author | Armentia Sánchez, Mikel | |
dc.contributor.author | Abasolo Bilbao, Mikel | |
dc.contributor.author | Coria Martínez, Ibai | |
dc.contributor.author | Sainitier, Nicolas | |
dc.date.accessioned | 2022-05-17T09:02:59Z | |
dc.date.available | 2022-05-17T09:02:59Z | |
dc.date.issued | 2022-03 | |
dc.identifier.citation | The Journal of Prosthetic Dentistry 127(3) : 477.e1-477.e9 (2022) | es_ES |
dc.identifier.issn | 1097-6841 | |
dc.identifier.uri | http://hdl.handle.net/10810/56570 | |
dc.description.abstract | [EN] STATEMENT OF PROBLEM: Dental implant geometry affects the mechanical performance and fatigue behavior of butt-joint implant-supported restorations. However, failure of the implant component has been generally studied by ignoring the prosthetic screw, which is frequently the critical restoration component.
PURPOSE: The purpose of this invitro study was to evaluate the effect of 3 main implant geometric parameters: the implant body diameter, the platform diameter, and the implant-abutment connection type (external versus internal butt-joint) on the fatigue life of the prosthetic screw. The experimental values were further compared with the theoretical ones obtained by using a previously published methodology.
MATERIAL AND METHODS: Four different designs of direct-to-implant dental restorations from the manufacturer BTI were tested. Forty-eight fatigue tests were performed in an axial fatigue testing machine according to the International Organization for Standardization (ISO) 14801. Linear regression models, 95% interval confidence bands for the linear regression, and 95% prediction intervals of the fatigue load-life (F-N) results were obtained and compared through an analysis of covariance (ANCOVA) to determine the influence of the 3 parameters under study on the fatigue behavior (alpha=.05).
RESULTS: Linear regression models showed a statistical difference (P<.001) when the implant body diameter was increased by 1 mm; an average 3.5-fold increase in fatigue life was observed. Increasing the implant abutment connection diameter by 1.4 mm also showed a significant difference (P<.001), leading to 7-fold longer fatigue life on average. No significant statistical evidence was found to demonstrate a difference in fatigue life between internal and external implant-abutment connection types.
CONCLUSIONS: Increasing the implant platform and body diameter significantly improved (P<.001) the fatigue life of the prosthetic screw, whereas external and internal connections provided similar results. In addition, experimental results proved the accuracy of the fatigue life prediction methodology. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.subject | bone screws | es_ES |
dc.subject | dental abutments | es_ES |
dc.subject | dental implant-abutment design | es_ES |
dc.subject | dental implants | es_ES |
dc.subject | dental restoration failure | es_ES |
dc.subject | dental stress analysis | es_ES |
dc.subject | materials testing | es_ES |
dc.title | Effect of the geometry of butt-joint implant-supported restorations on the fatigue life of prosthetic screws. | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2021 by the The Authors. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). | es_ES |
dc.rights.holder | Atribución-NoComercial-SinDerivadas 3.0 España | * |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0022391321007009?via%3Dihub | es_ES |
dc.identifier.doi | 10.1016/j.prosdent.2021.12.010 | |
dc.departamentoes | Ingeniería mecánica | es_ES |
dc.departamentoeu | Ingeniaritza mekanikoa | es_ES |