The use of stereolithographic data for thre dimensional finite element analysis model generation

Introduction. Computerized simulations, such as Finite Element Analysis (FEA), can usefully supplement or even replace expensive and time consuming procedures that are associated with 'in-vitro' studies. Virtual model generation can be advantageously applied to the most important and most intricate areas of inquiry. Materials and methods. In this study a three-dimensional scanner (Steinbichler Optotechnik) was used. Scan data was utilized to develop a stereolithographic data file using appropriate software (InnovMetric Polyworkd IMAlign, and Alias Wavefront's 'Spider'). Conversion of the. stl file into a volume model suitable for FEA analysis was generated using Catia software. Results. For the model description, 155355 nods and 104491 elements have been used. Elements were tetrahedral, second class. The generated model can be further manipulated, meaning different variants suitable for further analysis can be achieved. Conclusions. Using such a methodology, a precise model of irregular form, for example a tooth form, can be achieved. Although there is a cost in terms of time and money, once the model is achieved a gate towards simple and efficient FEA analysis is opened.