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Simulation of tissue-prosthesis margin interface by using surface scanning and digital design for auricular
Lindsay McHutchion1, Daniel Aalto2
1Anaplastologist, Institute for Reconstructive Sciences in Medicine, Edmonton, Canada; Graduate student, Department of Communication Sciences and Disorders, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Canada.
The Journal of Prosthetic Dentistry
|April 28, 2020
Summary
Developing digital workflows for auricular prostheses is crucial for patient fit during facial movements. While a new digital method shows promise, achieving consistent fit at the anterior margin requires further innovation.
Area of Science:
- Biomedical Engineering
- Digital Dentistry
- Prosthodontics
Background:
- Ensuring a precise fit for auricular prostheses during facial movements is a significant challenge, particularly with emerging digital fabrication techniques.
- Conventional methods address prosthesis fit, but digital workflows require further development to overcome this limitation.
Observation:
- A novel digital workflow was developed and evaluated using surface scan data and simulated tissue movement for auricular prosthesis design.
- An iterative design process involving five participants with existing implant-retained auricular prostheses informed the workflow development.
Findings:
- The developed digital workflow successfully matched the overall shape of the auricular prostheses to the non-treatment anatomy.
- Prosthesis fit during facial movements was variable, with some achieving intimate contact and others exhibiting gaps at the margins.
Implications:
- The iterative design process facilitates quality improvement in digital auricular prosthesis fabrication.
- Further refinement of the digital workflow is necessary to ensure consistent and acceptable prosthesis fit, especially at the anterior margin, during dynamic facial movements.
