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VOLUME 10 , ISSUE 2 ( April-June, 2020 ) > List of Articles
Subramaniam Sripriya, K Vinayagavel, Akshyallingam Meenakshi, Chitha PP Sabarigirinathan
Keywords : Auricular prosthesis, Craniofacial implant, Finite element analysis, Implants for auricular prosthesis
Citation Information : Sripriya S, Vinayagavel K, Meenakshi A, Sabarigirinathan CP. Evaluation of Stress Distribution in Implants Used to Retain Auricular Prosthesis with V-shaped and Reverse Buttress Thread Design by Three-dimensional Finite Element Analysis. Int J Prosthodont Restor Dent 2020; 10 (2):62-71.
License: CC BY-NC 4.0
Published Online: 31-10-2020
Copyright Statement: Copyright © 2020; The Author(s).
Aim: To compare the stress distribution in the implant used to retain auricular prosthesis with V-shaped thread and reverse buttress thread design. Materials and methods: Commercially available implant marketed by southern implant with V-shaped thread was taken as the control group. This parameter was taken to manufacture indigenous implant with reverse buttress thread design. Both the indigenous implant and commercially implant were scanned by noncontact profilometer using optical comparator (Deltronics Corp, USA). These data were imported into Pro/E wildfire 4.0 software (PTC, USA) for the creation of a three-dimensional (3D) model. Human skull was scanned using the 3D white light scanner, and these data were converted into surface model with the help of computer-aided design and drafting (CAD)/computer-aided manufacturing (CAM)/computer-aided engineering (CAE) tools. These 3D cloud data were imported into CATIA software for mesh generation. The implants were placed in the specified location in the temporal bone. The next step was loading on the implant 10 N axial loading on the center of the implant and moment on the same area of 100 N mm was done. The effect of load distribution with and without bar connection was assessed. Results: The statistical significance of the data within the group was assessed using mean and standard deviation and that between the group was assessed using Levene\'s test for variance and t test for mean. The stress distribution is more at the flange and less at the end and considerably reduced on connection with bar. Conclusion: The presence of the flange in the craniofacial implant decides the stress distribution and is not by the shape of the thread.
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