THE MODELING OF SOME TYPES OF IMPLANTS AND PROSTHESES USED FOR OSTEOINTEGRATION

Abstract

In order to understand the problems, which occur during the implanting and the prosthetics process, it was highly important to be acquainted with the anatomy of the human skeleton, the way these components are working together to achieve a normal functionality. In this respect CAD parametric software has been used as it allows to define models with a high degree of difficulty. First, the main bone components were defined by using CT images. These images were then transferred to AutoCAD where the outer and inner contours of the bone were approximate to polygonal lines composed by many segments. These contours were transferred to SolidWorks where, step by step, and section by section, the virtual model of the chewing system has been defined. Using the direct measurement method the virtual metallic components used during implant process were generated. The virtual models were then exported to a software for kinematical and FEA simulation. Using similar initial parameters for each case studied (as total force and torque) there were obtained dynamic maps of stress, strain and displacement. Furhermore the results have been analyzed and compared, leading subsequently to the main extracted conclusions

Keywords

• Dental Implant
• Virtual Bone
• Complex 3D Shapes
• Virtual Prototyping
• Virtual Human Skeleton

THE MODELING OF SOME TYPES OF IMPLANTS AND PROSTHESES USED FOR OSTEOINTEGRATION

Abstract

In order to understand the problems, which occur during the implanting and the prosthetics process, it was highly important to be acquainted with the anatomy of the human skeleton, the way these components are working together to achieve a normal functionality. In this respect CAD parametric software has been used as it allows to define models with a high degree of difficulty. First, the main bone components were defined by using CT images. These images were then transferred to AutoCAD where the outer and inner contours of the bone were approximate to polygonal lines composed by many segments. These contours were transferred to SolidWorks where, step by step, and section by section, the virtual model of the chewing system has been defined. Using the direct measurement method the virtual metallic components used during implant process were generated. The virtual models were then exported to a software for kinematical and FEA simulation. Using similar initial parameters for each case studied (as total force and torque) there were obtained dynamic maps of stress, strain and displacement. Furhermore the results have been analyzed and compared, leading subsequently to the main extracted conclusions.

Keywords

• -

References

1. Baciu C., 1986. Musculoskeletal surgery and prosthesis, in Romanian, Ed. medicala, Bucureşti, 399- 40
2. Buciu G., Popa D.L., Grecu D., Niculescu D., Nemes R., 20 Virtual comparative study on the use of nails at the fixation of tibial fractures using finite element method, The 4th International Conference Advanced Composite Materials Engineering, Lux Libris Publishing House, Brasov, Romania, 381-386. Buciu G., Popa D.L., Grecu D., Niculescu D., 2012.
3. Nemes R., Comparative analysis of the three new designs of tibial nails which eliminate the use of orthopedic screws, The 4th International Conference Advanced Composite Materials Engineering, Lux Libris Publishing House, Brasov, Romania, 387-392. Buciu G., Grecu D., Niculescu D., Chiutu L, Stoica M., Popa D., 2013. Studies about Virtual Behavior of Tibia
4. Fractures and Nails During the Fixation, Journal of Industrial Design and Engineering Graphics, vol.8, issue no.2. Buser, D., Cho, J.-Y., Yeo, A.B.K., 2007. Surgical Manual of Implant Dentistry: Step-By-Step Procedures, ISBN- 13: 978-0-86715-379-8, ISBN-10: 0-86715-379-2,
5. Quintessence Publishing Co, Inc, Illinois. Ciunel, S., Popa, D.L., Dumitru, N., 2013. Studies about
6. Movement Biofidelity of a Dummy Neck Used in an Impact Testing Device, Applied Mechanics and Materials Vol. 371, 539-543, Online available since 2013/Aug/30 at www.scientific.net, Publications, www.scientific.net/AMM.371.539. Trans Tech doi:4028/ Switzerland
7. C. Drago, T. Peterson, 2010. Implant Laboratory
8. Procedures: A Step-by-Step Guide, Blackwell Publishing, ISBN-13: 978-0-8138-2301-0.

9. G. Abedrabbo, Simulation of a frontal crash test using multibody Dynamics, Universite catholique de Louvain, Center for Research in Mechatronics, Belgium. M.R Maltese et al., 2007. Injury Mechanisms in Seat
10. Belt-restrained Occupants in Side Impact Crashes, Crash Injury Research and Engineering, Network (CIREN) Public Meeting Washington, DC, USA, March M.J. Van der Horst, 2002. Human Head Neck Response in Frontal, Lateral and Rear End Impact Loading - modelling and validation -, PhD Thesis, Eindhoven
11. University of Technology, Maastricht University and the TNO Crash Safety Centre. - Eindhoven: Technische Universiteit Eindhoven, Proefschrift. - ISBN 90-386- 2843
12. H.-P. Weber, 2008. The Concept of Early Loading,
13. Chapter 19 Loading Protocols and Clinical Outcomes, Osseointegration and Dental Implants, Edited by Asbjorn Jokstad, DDS, PhD, Wiley-Blackwell. 315-319. *** SolidWorks – User Guide and Tutorials, 1995- 20
14. *** VisualNastran – User Guide and Tutorials – 2001- 200 http://www.yourdentalimplantguide.com/procedure s/ dental_implants/procedure.html, Accessed: 2013- 02- http://digsitevalue.net/k/types-of-dental-implants, Accessed: 2013-02-25.