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A Method for Obtaining a Three-Dimensional Geometric Model of Dental Implants for Analysis via the Finite Element Method

Carvalho Silva, Guilherme DDS, MS*; Pereira Cornacchia, Tulimar Machado DDS, MS, PhD; Barbosa de Las Casas, Estevam Civ. Eng., MSc, PhD; Silami de Magalhães, Cláudia DDS, MS, PhD§; Moreira, Allyson Nogueira DDS, PhD

doi: 10.1097/ID.0b013e318288d548
Basic and Clinical Research

Purpose: The aim of the study was to present a methodology of development of a virtual 3-dimensional dental implant model for analyses via the finite element method.

Materials and Methods: A set, consisting of a dental implant and abutment, was embedded in acrylic resin for subsequent metallographic grinding and polishing. After the evidentiation of the internal geometry of the implant, the specimen was treated in a sputter for observation using scanning electron microscopy (SEM). The SEM image was transported to computer-aided design software by which all details of the implant were measured. With the measures obtained, the geometry was reproduced with 3-dimensional modeling software. Finally, the model was imported into finite element method analysis software with which it was discretized, generating a mesh.

Results: A model with the accurate geometry of the implant was developed. A mesh of 297,600 elements and 490,045 nodes was generated. An aleatory acceleration simulation was performed to test the mesh, and no errors were identified.

Conclusion: The developed methodology generated a precise dental implant model, which can be applied in different finite element method simulations.

*Doctoral Student, Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.

Adjunct Professor, Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.

Full Professor, Department of Structural Engineering, School of Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.

§Associate Professor, Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.

Associate Professor, Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.

Reprint requests and correspondence to: Guilherme Carvalho Silva, DDS, MS, Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Av Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil, Phone: +55-31-32259335, E-mail: guilhermeccs@ufmg.br

© 2013 by Lippincott Williams & Wilkins, Inc.