title: Determination of the frictional coefficient of the implant-antler interface: experimental approach.
abstract: The similar bone structure of reindeer antler to human bone permits studying the osseointegration of dental implants in the jawbone. As the friction is one of the major factors that have a significant influence on the initial stability of immediately loaded dental implants, it is essential to define the frictional coefficient of the implant-antler interface. In this study, the kinetic frictional forces at the implant-antler interface were measured experimentally using an optomechanical setup and a stepping motor controller under different axial loads and sliding velocities. The corresponding mean values of the static and kinetic frictional coefficients were within the range of 0.5-0.7 and 0.3-0.5, respectively. An increase in the frictional forces with increasing applied axial loads was registered. The measurements showed an evidence of a decrease in the magnitude of the frictional coefficient with increasing sliding velocity. The results of this study provide a considerable assessment to clarify the suitable frictional coefficient to be used in the finite element contact analysis of antler specimens.
authors: Department of Prosthodontic, Preclinical Education and Material Science, Rheinische Friedrich-Wilhelms University, Welschnonnenstr. 17, 53111 Bonn, Germany. ihasan@uni-bonn.de
authors: Istabrak
authors: I
authors: Hasan
authors: Ludger
authors: L
authors: Keilig
authors: Manfred
authors: M
authors: Staat
authors: Gerhard
authors: G
authors: Wahl
authors: Christoph
authors: C
authors: Bourauel
mesh_terms: D000818:Animals; D000999:Antlers / Q000737:chemistry* / Q000502:physiology*; D001842:Bone and Bones / Q000737:chemistry* / Q000378:metabolism; D003198:Computer Simulation; D015921:Dental Implants; D003764:Dental Materials / Q000737:chemistry* / Q000378:metabolism; D017276:Friction; D006801:Humans; D008954:Models, Biological; D016348:Osseointegration
chemical_list: D015921:Dental Implants; D003764:Dental Materials