Simulations Using Finite Element Method Made on a Personalized Dental System

Abstract:

The human skull and the maxillary bones have a very complicated architecture, determined by the outer walls, by the internal bone structures and their joining. In this paper CAD parametric software has been used to define complex virtual models. First, the mandible and jaw were defined using CT images. These images were imported into a CAD software using specific techniques and methods. These models have been finalized in SolidWorks where the virtual model of the studied system has been generated. Then, the virtual models were exported to a software for FEA simulation and prepared for every dentistry simulations. The structure of the maxillary bones contains spongy bone tissue, cortical bone tissue along with dental tissues. Each of these tissues have certain properties (elasticity, plasticity, density) assessed by flexibility. The analysis of the mechanical tension of the dental structures has been a subject of interest in recent years in order to determine the state of tension in the dental structures and to improve the mechanical strength of these structures. Such numerical techniques can give a better understanding of reactions and interactions of individual tissues. This involves a series of computational procedures to calculate stress in each element. Field variables can be interpolated by using form functions for scientific verification and validation of clinical assumptions. Various loadings have been applied to a personalized skull obtained from CT images using CAD techniques and procedures. On this system, FEM simulations were made and maps of stress, displacements and deformations were obtained that show the mechanical behavior of the maxillary dental system. Finally, important conclusions were highlighted.

• Periodical: Advanced Engineering Forum (Volume 34)
• Pages: 175-182
• DOI: https://doi.org/10.4028/www.scientific.net/AEF.34.175
• Online since: October 2019
• Authors: Mihaela Vatu, Daniela Vintilă, Dragos Laurentiu Popa*, Rodica Mercuţ, Sanda Mihaela Popescu, Georgiana Vintila
• Keywords: CT Image, Dentistry, FEA Simulation, Virtual Jaw, Virtual Maxillary

References

[1] D. Popa, D. Tarnita, I. Iordachita, Study method for human knee applicable to humanoid robots, The 14th International Workshop on Robotics in Alpe-Adria-Danube Region, RAAD, vol.5, (2005) 26-28.

DOI: 10.1109/raad.2010.5524565

[2] D.L. Popa, G. Buciu, D .Grecu, D. Niculescu, L. Chiutu, M. Stoica, Studies about virtual behavior of tibia fractures and nails during the fixation process, Journal of Industrial Design & Engineering Graphics 8 (2) (2013) 5-10.

[3] D. Tarnita, D.N. Tarnita, N. Bizdoaca, D. Popa, Contributions on the dynamic simulation of the virtual model of the human knee joint, Materialwissenschaft und Werkstofftechnik: Entwicklung, Fertigung, Prüfung, Eigenschaften und Anwendungen technischer Werkstoffe, vol. 40, no. 1-2, (2009) 73-81.

DOI: 10.1002/mawe.200800375

[4] D.N. Tarniţă, D. Tarniţă, D. Popa, R. Tarniţă, Analysis of stress and displacements of phalanx bone with the finite element method, Romanian Journal of Morphology and Embryology, vol. 46, no. 3, (2005) 189-191.

[5] D. Tarnita, C. Berceanu, C. Tarnita, The three-dimensional printing–a modern technology used for biomedical prototypes, Materiale plastice, no.47, nr.3, (2010) 328-334.

[6] Buciu G., Popa D.L., D Grecu, D Niculescu, R Nemes, Virtual comparative study on the use of nails at the fixation of tibial fractures using finite element method, Proceedings of The 4th International Conference ²Advanced Composite Materials Engineering ² COMAT 2012 Brasov Romania, Lux Libris Publishing House, (2012) 381-386.

[7] M. Vătu, M.M. Crăițoiu, D. Vintilă, V. Mercuț, M.S. Popescu, M. Scrieciu, L.D. Popa, Determination of resistance forces from mandibular movements through dynamic simulation using kinematic analysis and finite elements method, Romanian Journal of Oral Rehabilitation, Vol. 10 Issue: 1 (2018) pp.20-28.

[8] M. Vatu,. D. Vintila, D.L. Popa, 3D Skull Virtual Model Based on CT or MRI Images Used for Dentistry Simulations, Applied Mechanics and Materials, Vol. 880, (2018) 101-110.

DOI: 10.4028/www.scientific.net/amm.880.101

[9] D Popa, A Duta, A Pitru, D Tutunea, G Gherghina, About the Simulation Environment for Dental Implant Studies, Scientific Journal of POLITEHNICA University of Timisoara, (2013) 137-141.

[10] S. Ciunel, A. Duta, D.L. Popa, G. Popa-Mitroi, V.C. Dumitru, The Behavior of the Virtual Human Head-Neck System during the Main Movements, Applied Mechanics & Materials, no. 657, (2014) 780-784.

DOI: 10.4028/www.scientific.net/amm.657.780

[11] A.D. Popa, A.M. Mogosanu, D.L. Popa, A. Duta, A. Teodorescu, Virtual and rapid prototyping methods applied in civil engineering: Snow, wind and earthquake simulations on a five storey building, FME Transactions, vol. 45, no. 2, (2017) 276-282.

DOI: 10.5937/fmet1702276p