Dr. Dominick Gadaleta Profile

Dr. Dominick Gadaleta

at Thomas Jefferson Univ Hospitals Inc

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Proceedings Article | 6 March 2018 Paper

Fabrication of custom PCL scaffold for nasal septal perforation repair

Dominick Gadaleta, Daniel Lee, Matthew Peng, Nicholas Cruickshank, Rohit Shinde, Abigail Hong, Sara Pennacchi, Abel Dawit, Howard Krein, Jayaram Udupa, Chamith Rajapakse

Proceedings Volume 10579, 1057908 (2018) https://doi.org/10.1117/12.2293820

KEYWORDS: Cartilage, Tissues, Computed tomography, Tissue engineering, 3D printing, Custom fabrication, Surgery, 3D image processing, Head, Neck

Read Abstract +

Nasal septal perforations (NSPs) are relatively common. They can be problematic for both patients and head and neck reconstructive surgeons who attempt to repair them. Often, this repair is made using an interpositional graft sandwiched between bilateral mucoperichondrial advancement flaps. The ideal graft is nasal septal cartilage. However, many patients with NSP lack sufficient septal cartilage to harvest. Harvesting other sources of autologous cartilage grafts, such as auricular cartilage, adds morbidity to the surgical case and results in a graft that lacks the ideal qualities required to repair the nasal septum. Tissue engineering has allowed for new reconstructive protocols to be developed. Currently, the authors are unaware of any new literature that looks to improve repair of NSP using custom tissue-engineered cartilage grafts. The first step of this process involves developing a protocol to print the graft from a patient's pre-operative CT.

In this study, CT scans were converted into STereoLithography (STL) file format. The subsequent STL files were transformed into 3D printable G-Code using the Slic3r software. This allowed us to customize the parameters of our print and we were able to choose a layer thickness of 0.1mm. A desktop 3D bioprinter (BioBot 1) was then used to construct the scaffold.

This method resulted in the production of a PCL scaffold that precisely matched the patient’s nasal septal defect, in both size and shape. This serves as the first step in our goal to create patient-specific tissue engineered nasal septal cartilage grafts for NSP repair.

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