Proposed Topic (Most preferred): :
Clinical Safety and Quality Service I (Projects aiming to improve efficiency and effectiveness of care delivery to meet international standards)
Proposed Topic (Second preferred): :
Clinical Safety and Quality Service III (Projects aiming at quality service to patients and their carers)
Authors (including presenting author) :
Tee SM (1), Chow HY (1), Yip KY(1)
Affiliation :
(1) Department of Prosthetics & Orthotics, Tuen Mun Hospital
Introduction :
Microtia, a congenital condition resulting in underdeveloped or malformed external ears, often leads to noticeable asymmetry. Auricular prostheses play a pivotal role in restoring the appearance of individuals affected by this condition. However, the traditional fabrication method, which relies on labor-intensive manual sculpting, imposes limitations on widespread access. To overcome this limitation, digital fabrication techniques can be employed to streamline the process.
Objectives :
The objective of this study is to develop a comprehensive workflow for digitally fabricating custom auricular prostheses using 3D scanning, modeling, and printing. By achieving this, we aim to enhance the outcomes and accessibility of auricular prostheses.
Methodology :
The conventional method of fabricating auricular prostheses presents several challenges, including:
- The conventional casting method utilized for capturing the shape of the patient's ear can be both messy and time-consuming. It entails the process of transferring the negative cast to a positive cast before any modifications can be implemented.
- Achieving perfect symmetry can be difficult. The sculpting process of the prototype prosthesis requires a highly skilled prosthetist to create a realistic, well-fitting prosthesis.
-The manual process can be time-consuming, and multiple appointments may be needed for fitting and adjustments.
Our proposed end-to-end workflow includes the following steps:
- Precise 3D digital scanning of the patient's anatomy to obtain accurate measurements.
- Utilizing mirrored alterations in 3D modeling software to match the contralateral ear and ensure symmetry.
- Digital design and 3D printing of prototype prosthesis shells, enabling easy customization and modifications.
Result & Outcome :
The implementation of digital scanning provides superior precision and symmetry in the fabrication of auricular prostheses. By using digital design and 3D printing, it facilitates convenient customization and modification of the prosthesis design. The incorporation of 3D modeling software has reduced the manual process time from 8 hours to 1 hour, enhancing efficiency.
By leveraging 3D printing technologies, the challenges involved in fabricating prostheses have been notably diminished, thereby facilitating an easier learning curve for more colleagues to acquire and master the essential silicone fabrication skills, enhancing accessibility.
Conclusion:
Digital modeling and printing offer tremendous promise in enhancing the efficiency of fitting auricular prostheses, including increased precision and convenient modification. Furthermore, these techniques can reduce waiting times for patients, making auricular prostheses more accessible.
