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Morphometric analysis and fabrication of prosthetic ear using CAD/CAM and additive manufacturing technology

Prosthetic ear rehabilitation is one of the treatments for auricular defect. Current practice by surgeon require patient to go for osseointegrated craniofacial implant surgery for retention of the prosthetic ear. Traditionally, the wax pattern was created from the impression taken from patient an...

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Main Author: Mohamed, Nor Azura
Format: Thesis
Language:English
Published: 2016
Subjects:
RF Otorhinolaryngology
Online Access:http://eprints.usm.my/43656/1/Dr.%20Nor%20Azura%20Mohamed-24%20pages.pdf
http://eprints.usm.my/43656/
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spelling my.usm.eprints.43656 http://eprints.usm.my/43656/ Morphometric analysis and fabrication of prosthetic ear using CAD/CAM and additive manufacturing technology Mohamed, Nor Azura RF Otorhinolaryngology Prosthetic ear rehabilitation is one of the treatments for auricular defect. Current practice by surgeon require patient to go for osseointegrated craniofacial implant surgery for retention of the prosthetic ear. Traditionally, the wax pattern was created from the impression taken from patient and the final prosthesis is processed with silicone material. This conventional method has always been time consuming, massive work and caused discomfort to patient. Moreover the accuracy of the final prosthetic sometimes was not satisfied. Impression technique play a vital role in determining accurate reproduction of affected and unaffected ears, orientation of the ear during wax try in and fabrication of ear prostheses. Hence, the ear anthropometric data is important to determine the correct orientation and position of the prosthetic ear. This paper aims to provide morphometric data of a few standard ear parameters for Kelantanese and also describes a novel method of design and fabricating the prosthetic ear applying CAD/CAM and additive manufacturing technologies. A clinical study is done onto a patient in HUSM and comparison is made between traditional method and the new approach using computer aided technology. Study also validates the prosthetic ear obtained from both techniques with the morphometric data. The measurement technique of the final prosthetic ear to validate the result with regards to the morphometric data was done digitally using software. Morphometric study was conducted on 68 samples of normal ear for bothleft and right with 15 parameters measured. Data was retrieved from CT scan and convert to 3D image using soft tissue development. Mirror image technique was applied to reconstruct the missing ear, and then fabricate the 3D model of the prosthetic ear using Stereolitography (SLA) technology. The 3D model will become the master mold to produce the final prosthetic ear using vacuum casting technology. Morphometric analysis gave the mean and standard deviation values for auricular length and width, length and height of tragus, insertion length of auricle, length and width of lobular and conchal, protusion at superaurale and tragal level as well as the inclination and symmetrical angle. While study also illustrates that there is significant different between traditional and computer aided approach. The new method shows time reduction during design and fabrication stage and also show improvement in accuracy and aesthetic appearance. 2016-06 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/43656/1/Dr.%20Nor%20Azura%20Mohamed-24%20pages.pdf Mohamed, Nor Azura (2016) Morphometric analysis and fabrication of prosthetic ear using CAD/CAM and additive manufacturing technology. Masters thesis, Universiti Sains Malaysia.
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic RF Otorhinolaryngology
spellingShingle RF Otorhinolaryngology
Mohamed, Nor Azura
Morphometric analysis and fabrication of prosthetic ear using CAD/CAM and additive manufacturing technology
description Prosthetic ear rehabilitation is one of the treatments for auricular defect. Current practice by surgeon require patient to go for osseointegrated craniofacial implant surgery for retention of the prosthetic ear. Traditionally, the wax pattern was created from the impression taken from patient and the final prosthesis is processed with silicone material. This conventional method has always been time consuming, massive work and caused discomfort to patient. Moreover the accuracy of the final prosthetic sometimes was not satisfied. Impression technique play a vital role in determining accurate reproduction of affected and unaffected ears, orientation of the ear during wax try in and fabrication of ear prostheses. Hence, the ear anthropometric data is important to determine the correct orientation and position of the prosthetic ear. This paper aims to provide morphometric data of a few standard ear parameters for Kelantanese and also describes a novel method of design and fabricating the prosthetic ear applying CAD/CAM and additive manufacturing technologies. A clinical study is done onto a patient in HUSM and comparison is made between traditional method and the new approach using computer aided technology. Study also validates the prosthetic ear obtained from both techniques with the morphometric data. The measurement technique of the final prosthetic ear to validate the result with regards to the morphometric data was done digitally using software. Morphometric study was conducted on 68 samples of normal ear for bothleft and right with 15 parameters measured. Data was retrieved from CT scan and convert to 3D image using soft tissue development. Mirror image technique was applied to reconstruct the missing ear, and then fabricate the 3D model of the prosthetic ear using Stereolitography (SLA) technology. The 3D model will become the master mold to produce the final prosthetic ear using vacuum casting technology. Morphometric analysis gave the mean and standard deviation values for auricular length and width, length and height of tragus, insertion length of auricle, length and width of lobular and conchal, protusion at superaurale and tragal level as well as the inclination and symmetrical angle. While study also illustrates that there is significant different between traditional and computer aided approach. The new method shows time reduction during design and fabrication stage and also show improvement in accuracy and aesthetic appearance.
format Thesis
author Mohamed, Nor Azura
author_facet Mohamed, Nor Azura
author_sort Mohamed, Nor Azura
title Morphometric analysis and fabrication of prosthetic ear using CAD/CAM and additive manufacturing technology
title_short Morphometric analysis and fabrication of prosthetic ear using CAD/CAM and additive manufacturing technology
title_full Morphometric analysis and fabrication of prosthetic ear using CAD/CAM and additive manufacturing technology
title_fullStr Morphometric analysis and fabrication of prosthetic ear using CAD/CAM and additive manufacturing technology
title_full_unstemmed Morphometric analysis and fabrication of prosthetic ear using CAD/CAM and additive manufacturing technology
title_sort morphometric analysis and fabrication of prosthetic ear using cad/cam and additive manufacturing technology
publishDate 2016
url http://eprints.usm.my/43656/1/Dr.%20Nor%20Azura%20Mohamed-24%20pages.pdf
http://eprints.usm.my/43656/
_version_ 1643710799971090432
score 13.211869

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