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Case Reports: Novel treatment (new drug/interventions; established drug/procedure in new situation)
Deviation analysis in custom-made mandibular reconstruction: how to evaluate results
  1. Paolo Gennaro1,
  2. Flavia Cascino2,
  3. Laura Viola Pignataro1 and
  4. Guido Gabriele1
  1. 1Department of Maxillo-Facial Surgery, University of Siena Faculty of Medicine and Surgery, Siena, Italy
  2. 2Department of Maxillo-Facial Surgery, Policlinico Le Scotte, Siena, Italy
  1. Correspondence to Professor Guido Gabriele; guido.gabriele{at}unisi.it

Abstract

The purpose of this case report is to present a deviation analysis made to evaluate the accuracy and reproducibility of virtual surgical planning—computer-aided design—computer-aided manufacturing (CAD/CAM) technology.

These techniques were used to programme and perform both demolitive and reconstructive surgery in an 18-year-old man treated for a mandibular ameloblastoma. Total body CT scan and CT angiography were performed before the surgery. DICOM-format data were captured and a planning was performed using CAD/CAM technology. After the surgery, DICOM files of a postoperative CT scan were evaluated to assess the accuracy of the reconstruction. The deviation of the postoperative result from what was planned was indicated with different colours in a mandible mapper and changes in condylar and angular position between 0.5 mm and 2 mm were observed. A standardised method to evaluate accuracy or efficiency of CAD/CAM technology is still not available, nevertheless, since the patient has a good functional or aesthetic recover, the authors are satisfied with the results.

  • Oral and maxillofacial surgery
  • Head and neck surgery

https://doi.org/10.1136/bcr-2021-247847

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    Footnotes

    • Contributors Supervised by and Approved by GG. Conception and acquisition of data by LVP. Patient was under the care of PG and GG. Report was written by LVP and FC.

    • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

    • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

    • Competing interests None declared.

    • Provenance and peer review Not commissioned; externally peer reviewed.