Finite element analysis of the dental crown: a case study of alumina based incisor

1st International Conference on Advanced Engineering Functional Materials

Samal, Pratik^1 ; Mohanty, Sushree Swati^2 ; Panigrahi, Muktikanta^3 ; Mohanty, Saralasrita^4

School of Mechanical Engineering, Vellore Institute of Technology, University Vellore, 632014, India^1

School of Life Science, Ravenshaw University, Cuttack

753003, India^2

Metallurgical Engineering Department, Gandhi Institute of Engineering and Technology (GIET), Gunupur, Rayagada

Odisha

765022, India^3

School of Physical Sciences, National Institute of Science Education and Research, HBNI, Jatni

752050, India^4

关键词: 3D finite element model;    3D laser scanners;    Biomechanical effects;    Computer numerical control;    Dental crowns;    Green machining;    Static loading;    Stress concentration factors;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/410/1/012003/pdf
DOI  :  10.1088/1757-899X/410/1/012003

来源: IOP

【 摘 要 】

The purpose of this study was to evaluate the stress distribution on newly developed alumina based dental crown (incisor) for understanding its biomechanical effects by Finite Element Analysis (FEA). Alumina based dental crown was fabricated through green machining of machinable alumina cylindrical compacts by Computer Numerical Control (CNC) followed by sintering at 1550C. Alumina crown (Incisor) was scanned by using 3D laser scanner and modified subsequently before assembled in a 3D finite element model. The 3D model was constructed and analyzed under ANSYS environment. The model developed high stress values at the upper frontal and basal region. The large stress concentration factors and narrow profile of the upper region and the arrested base are believed to have been responsible for the high stress values. Since the stresses were lower than the compressive strength of the material, the crown is expected to withstand real-time static loading.