title: Long-Term Fatigue and Its Probability of Failure Applied to Dental Implants.
abstract: It is well known that dental implants have a high success rate but even so, there are a lot of factors that can cause dental implants failure. Fatigue is very sensitive to many variables involved in this phenomenon. This paper takes a close look at fatigue analysis and explains a new method to study fatigue from a probabilistic point of view, based on a cumulative damage model and probabilistic finite elements, with the goal of obtaining the expected life and the probability of failure. Two different dental implants were analysed. The model simulated a load of 178 N applied with an angle of 0°, 15°, and 20° and a force of 489 N with the same angles. Von Mises stress distribution was evaluated and once the methodology proposed here was used, the statistic of the fatigue life and the probability cumulative function were obtained. This function allows us to relate each cycle life with its probability of failure. Cylindrical implant has a worst behaviour under the same loading force compared to the conical implant analysed here. Methodology employed in the present study provides very accuracy results because all possible uncertainties have been taken in mind from the beginning.
authors: Department of Medicine and Surgery (Stomatology Area), Rey Juan Carlos University, C/ Tulipán s/n, Móstoles, 28933 Madrid, Spain; Applied Modelling and Instrumentation Group, Aragón Institute of Engineering Research, University of Zaragoza, C/ Mariano Esquillor s/n, 50018 Zaragoza, Spain.
authors: María
authors: 0000-0003-0833-0680
authors: M
authors: Prados-Privado
authors: Department of Medicine and Surgery (Stomatology Area), Rey Juan Carlos University, C/ Tulipán s/n, Móstoles, 28933 Madrid, Spain.
authors: Juan Carlos
authors: JC
authors: Prados-Frutos
authors: Biotecnos Research Center, Rua Dr. Bozano 571, 97015-001 Santa Maria, RS, Brazil; University Catholic San Antonio de Murcia (UCAM), Guadalupe, 30107 Murcia, Spain.
authors: Sérgio Alexandre
authors: SA
authors: Gehrke
authors: Oral Medicine, University of Murcia, 30001 Murcia, Spain.
authors: Mariano
authors: 0000-0001-9461-983X
authors: M
authors: Sánchez Siles
authors: International Dental Research Cathedra, Faculty of Medicine and Dentistry, University Catholic San Antonio de Murcia (UCAM), Guadalupe, 30107 Murcia, Spain.
authors: José Luis
authors: JL
authors: Calvo Guirado
authors: Applied Modelling and Instrumentation Group, Aragón Institute of Engineering Research, University of Zaragoza, C/ Mariano Esquillor s/n, 50018 Zaragoza, Spain.
authors: José Antonio
authors: JA
authors: Bea
mesh_terms: D015921:Dental Implants; D019544:Equipment Failure Analysis; D006801:Humans; D008962:Models, Theoretical; D011475:Prosthesis Failure
chemical_list: D015921:Dental Implants