New frontiers and emerging applications of 3D printing in ENT surgery: a systematic review of the literature

Canzi, Pietro; Magnetto, Marianna; Marconi, Stefania; Morbini, Patrizia; Mauramati, Simone; Aprile, Federico; Avato, Irene; Auricchio, Ferdinando; Benazzo, Marco

doi:10.14639/0392-100x-1984

Cited by 27 publications

(39 citation statements)

References 129 publications

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“…The receiver-stimulator placement 9 cm away from the EAC with an angle of 90 degrees required a preoperative feasibility study to clari- fy some surgical issues related to this uncommon positioning. Although the employment of 3DP prototypes in customized surgical planning has been widely documented (16), the use of a 3DP model for this specific purpose represents a novelty. Postoperative MRI provided high-quality images of the intracranial lesion requiring surveillance, even if some differences emerge compared with the preoperative MRI.…”

Section: Discussionmentioning

confidence: 99%

Customized Cochlear Implant Positioning in a Patient With a Low- Grade Glioma: Towards the Best MRI Artifact Management

Canzi¹,

Luzzi²,

Carlotto³

et al. 2022

Otology &Amp; Neurotology

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ObjectiveTo report the personalized decision-making pro- cess adopted for a cochlear implant (CI) candidate requiring magnetic resonance imaging (MRI) brain surveillance.Study DesignClinical capsule report.SettingTertiary academic referral center.PatientA 23-year-old man affected by posttraumatic bilat- eral profound hearing loss, already in radiological follow-up for a suspected small left cuneal low-grade glioma.InterventionsA multidisciplinary approach involving preoperative MRI simulations and 3D printed (3DP) models aiming to adapt the CI position to facilitate MRI brain lesion visibility.Main Outcome MeasuresMRI visibility and surgical approach.ResultsPreoperative MRI scans with the placement of an Ultra 3D CI were performed simulating different implant location to assess the brain lesion visibility in MRI. CI was positioned 9 cm away from the external auditory canal with an angle of 90 degrees. To assess the technical feasibility of the surgical procedure, a patient-specific 3DP head model was produced preoperatively. The postoperative course was uneventful, the patient showed a significant benefit from CI, and the brain lesion was highly visible at the MRI follow-up.ConclusionsThe employment of strategies aimed at improving the MRI quality in CI recipients still represents a topic requiring attention. Thanks to multidisciplinary team collaboration, in our case, the CI position was successfully determined to allow unhindered MRI visibility of a specific intracranial structure.

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Section: Discussionmentioning

confidence: 99%

Customized Cochlear Implant Positioning in a Patient With a Low- Grade Glioma: Towards the Best MRI Artifact Management

Canzi¹,

Luzzi²,

Carlotto³

et al. 2022

Otology &Amp; Neurotology

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“…While other reviews address the use of 3D printing in all otorhinolaryngology training, [57][58][59][60][61][62][63] this is the first review comprehensively covering the use of 3D-printed models for temporal bone surgical training. This review is limited by the fact that implications and best practices are drawn from the modest educational evidence found in current studies, which include only content validity based on opinions (ie, face validity).…”

Section: Discussionmentioning

confidence: 99%

3D‐Printed Models for Temporal Bone Surgical Training: A Systematic Review

Frithioff

Frendø

Pedersen

et al. 2021

Otolaryngol.--head neck surg.

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Objective 3D-printed models hold great potential for temporal bone surgical training as a supplement to cadaveric dissection. Nevertheless, critical knowledge on manufacturing remains scattered, and little is known about whether use of these models improves surgical performance. This systematic review aims to explore (1) methods used for manufacturing and (2) how educational evidence supports using 3D-printed temporal bone models. Data Sources PubMed, Embase, the Cochrane Library, and Web of Science. Review Methods Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, relevant studies were identified and data on manufacturing and validation and/or training extracted by 2 reviewers. Quality assessment was performed using the Medical Education Research Study Quality Instrument tool; educational outcomes were determined according to Kirkpatrick’s model. Results The search yielded 595 studies; 36 studies were found eligible and included for analysis. The described 3D-printed models were based on computed tomography scans from patients or cadavers. Processing included manual segmentation of key structures such as the facial nerve; postprocessing, for example, consisted of removal of print material inside the model. Overall, educational quality was low, and most studies evaluated their models using only expert and/or trainee opinion (ie, Kirkpatrick level 1). Most studies reported positive attitudes toward the models and their potential for training. Conclusion Manufacturing and use of 3D-printed temporal bones for surgical training are widely reported in the literature. However, evidence to support their use and knowledge about both manufacturing and the effects on subsequent surgical performance are currently lacking. Therefore, stronger educational evidence and manufacturing knowhow are needed for widespread implementation of 3D-printed temporal bones in surgical curricula.

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“…Over time, there has been growing interest in 3D printing applications within surgery, including otolaryngology. 13 Potential future directions for our project include the digital segmentation of the 3D model to create carving guides for the microtia construct's individual components. The 3D model fabrication may also be beneficial to assist alternative reconstructive approaches such as reshaping MEDPOR (Stryker, Kalamazoo, Mich) or single stage microtia reconstruction with temporal parietal fascia flaps.…”

Section: Discussionmentioning

confidence: 99%

Fabrication of 3D Models for Microtia Reconstruction Using Smartphone-Based Technology

You

Liu

Silva

2021

Ann Otol Rhinol Laryngol

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Objective: Microtia reconstruction is technically challenging due to the intricate contours of the ear. It is common practice to use a two-dimensional tracing of the patient’s normal ear as a template for the reconstruction of the affected side. Recent advances in three-dimensional (3D) surface scanning and printing have expanded the ability to create surgical models preoperatively. This study aims to describe a simple and affordable process to fabricate patient-specific 3D ear models for use in the operating room. Study design: Applied basic research on a novel 3D optical scanning and fabrication pathway for microtia reconstruction. Setting: Tertiary care university hospital. Methods: Optical surface scanning of the patient’s normal ear was completed using a smartphone with facial recognition capability. The Heges application used the phone’s camera to capture the 3D image. The 3D model was digitally isolated and mirrored using the Meshmixer software and printed with a 3D printer (MonopriceTM Select Mini V2) using polylactic acid filaments. Results: The 3D model of the ear served as a helpful intraoperative reference and an adjunct to the traditional 2D template. Collectively, time for imaging acquisition, editing, and fabrication was approximately 3.5 hours. The upfront cost was around $210, and the recurring cost was approximately $0.35 per ear model. Conclusion: A novel, low-cost approach to fabricate customized 3D models of the ear is introduced. It is feasible to create individualized 3D models using currently available consumer technology. The low barrier to entry raises the possibility for clinicians to incorporate 3D printing into various clinical applications.

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New frontiers and emerging applications of 3D printing in ENT surgery: a systematic review of the literature

Cited by 27 publications

References 129 publications

Customized Cochlear Implant Positioning in a Patient With a Low- Grade Glioma: Towards the Best MRI Artifact Management

Customized Cochlear Implant Positioning in a Patient With a Low- Grade Glioma: Towards the Best MRI Artifact Management

3D‐Printed Models for Temporal Bone Surgical Training: A Systematic Review

Fabrication of 3D Models for Microtia Reconstruction Using Smartphone-Based Technology

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