Three dimensional finite element models are the most appropriate for investigating the biomechanical response of dental implant. In the present figures a simple three dimensional model of a threaded implant is reported giving a full view (Fig. 1) and transversal (Fig. 2) section of mandibular area in correspondence with the implant site.
Geometrical configurations of the anatomical site are obtained by means of data taken from tomographic relief and implant geometry configuration is deduced using elementary basic microscope. An example of this procedure is reported in the "Three dimensional model of implant system" section.
Different values of the Young's modulus are assumed for the different regions of bone. These values are set according to an orthotropic scheme. Average elastic values for human mandible bone, reported in table 4 of "Mechanical properties of bone" section, are adopted. A distinction is made between cortical and trabecular bone with regard to the periimplant region, as healing and functional adaptation processes mostly take place in this zone and strongly affect the biomechanical efficiency of the dental implant. Loads are assumed according to average data reported in literature and representing physiological conditions.