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A three-dimensionally printed otological model for cholesteatoma mastoidectomy training

  • Otology
  • Published:
European Archives of Oto-Rhino-Laryngology Aims and scope Submit manuscript

Abstract

Purpose

To relate the creation and expert validation (face and content validity) of an affordable three-dimensional (3-D) printed model of temporal bones with chronic otitis media with cholesteatoma (COMC) as a simulator for mastoidectomy.

Methods

We performed computed tomography (CT) of the temporal bones of a patient with COMC followed at the University of São Paulo (USP) Hospital with 3-D Slicer to create a 3-D model of the affected bone using light-curing resin and silicone (cholesteatoma). The final 3-D printed images were scored by 10 otologists using a customized version of the Michigan Standard Simulation Scale Experience (MiSSES). Internal consistency and inter-rater reliability were assessed using Cronbach’s α and intraclass correlations.

Results

Otologists consistently scored the model positively for fidelity, educational value, reactions, and the overall model quality. Nine otologists agreed that the model was a good educational device for surgical training of COMC. All experts deemed the model ready—or nearly ready—for use. The final cost of the model, including raw materials and manufacturing, was 120 USD.

Conclusions

Using 3-D printing technology, we created the first anatomically accurate, low-cost, disease-reproducing 3-D model of temporal bones for mastoidectomy training for cholesteatoma.

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My manuscript has no associated data.

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Acknowledgements

The authors thank the members of the Otorhinolaryngology Foundation for providing access to their 3D-printing facility and expert consultation, specially Dr Lucas Formighieri, radiologist.

Funding

All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest or non-financial interest in the subject matter or materials discussed in this manuscript.

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Authors and Affiliations

  1. Otolaryngology Department, University of São Paulo School of Medicine, Av Dr. Eneas de Carvalho Aguir 255 6º, Andar sala 6167, São Paulo, 05403-000, Brazil

    Marcos Antonio de Souza, Ricardo Ferreira Bento & Paula Tardim Lopes

Authors
  1. Marcos Antonio de Souza
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  2. Ricardo Ferreira Bento
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  3. Paula Tardim Lopes
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Contributions

RFB and MAdS conceived the idea for this article. MAdS collected relevant data and coordinated the creation of the model. PTL and RFB analyzed the data after discussions with MAdS. MAdS and PTL drafted the paper. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Marcos Antonio de Souza.

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Conflict of interest

The authors have no conflicts of interest to declare that are relevant to the content of this article.

Ethics approval

It was approved by the research ethics committee of the USP Hospital, under opinion 4.734.389.

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de Souza, M.A., Bento, R.F. & Lopes, P.T. A three-dimensionally printed otological model for cholesteatoma mastoidectomy training. Eur Arch Otorhinolaryngol 280, 671–680 (2023). https://doi.org/10.1007/s00405-022-07536-y

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  • DOI: https://doi.org/10.1007/s00405-022-07536-y

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