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Accuracy of low-cost alternative facial scanners: a prospective cohort study

INTRODUCTION: Three-dimensional facial scans have recently begun to play an increasingly important role in the peri-therapeutic management of oral and maxillofacial and head and neck surgery cases. Face scan images can be generated by optical facial scanners utilizing line-laser, stereophotography,...

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Autores principales: Bartella, Alexander K., Laser, Josefine, Kamal, Mohammad, Krause, Matthias, Neuhaus, Michael, Pausch, Niels C., Sander, Anna K., Lethaus, Bernd, Zimmerer, Rüdiger
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9938030/
https://www.ncbi.nlm.nih.gov/pubmed/35249150
http://dx.doi.org/10.1007/s10006-022-01050-5
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author Bartella, Alexander K.
Laser, Josefine
Kamal, Mohammad
Krause, Matthias
Neuhaus, Michael
Pausch, Niels C.
Sander, Anna K.
Lethaus, Bernd
Zimmerer, Rüdiger
author_facet Bartella, Alexander K.
Laser, Josefine
Kamal, Mohammad
Krause, Matthias
Neuhaus, Michael
Pausch, Niels C.
Sander, Anna K.
Lethaus, Bernd
Zimmerer, Rüdiger
author_sort Bartella, Alexander K.
collection PubMed
description INTRODUCTION: Three-dimensional facial scans have recently begun to play an increasingly important role in the peri-therapeutic management of oral and maxillofacial and head and neck surgery cases. Face scan images can be generated by optical facial scanners utilizing line-laser, stereophotography, or structured light modalities, as well as from volumetric data: for example, from cone beam computed tomography (CBCT). This study aimed to evaluate whether two low-cost procedures for the creation of three-dimensional face scan images were capable of producing sufficiently accurate data sets for clinical analysis. MATERIALS AND METHODS: Fifty healthy volunteers were included in the study. Two test objects with defined dimensions (Lego bricks) were attached to the forehead and the left cheek of each volunteer. Facial anthropometric values (i.e., the distances between the medial canthi, the lateral canthi, the nasal alae, and the angles of the mouth) were first measured manually. Subsequently, face scans were performed with a smart device and manual photogrammetry and the values obtained were compared with the manually measured data sets. RESULTS: The anthropometric distances deviated, on average, 2.17 mm from the manual measurements (smart device scanning deviation 3.01 mm, photogrammetry deviation 1.34 mm), with seven out of eight deviations being statistically significant. For the Lego brick, from a total of 32 angles, 19 values demonstrated a significant difference from the original 90° angles. The average deviation was 6.5° (smart device scanning deviation 10.1°, photogrammetry deviation 2.8°). CONCLUSION: Manual photogrammetry demonstrated greater accuracy when creating three-dimensional face scan images; however, smart devices are more user-friendly. Dental professionals should monitor camera and smart device technical improvements carefully when choosing and adequate technique for 3D scanning.
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spelling pubmed-99380302023-02-19 Accuracy of low-cost alternative facial scanners: a prospective cohort study Bartella, Alexander K. Laser, Josefine Kamal, Mohammad Krause, Matthias Neuhaus, Michael Pausch, Niels C. Sander, Anna K. Lethaus, Bernd Zimmerer, Rüdiger Oral Maxillofac Surg Original Article INTRODUCTION: Three-dimensional facial scans have recently begun to play an increasingly important role in the peri-therapeutic management of oral and maxillofacial and head and neck surgery cases. Face scan images can be generated by optical facial scanners utilizing line-laser, stereophotography, or structured light modalities, as well as from volumetric data: for example, from cone beam computed tomography (CBCT). This study aimed to evaluate whether two low-cost procedures for the creation of three-dimensional face scan images were capable of producing sufficiently accurate data sets for clinical analysis. MATERIALS AND METHODS: Fifty healthy volunteers were included in the study. Two test objects with defined dimensions (Lego bricks) were attached to the forehead and the left cheek of each volunteer. Facial anthropometric values (i.e., the distances between the medial canthi, the lateral canthi, the nasal alae, and the angles of the mouth) were first measured manually. Subsequently, face scans were performed with a smart device and manual photogrammetry and the values obtained were compared with the manually measured data sets. RESULTS: The anthropometric distances deviated, on average, 2.17 mm from the manual measurements (smart device scanning deviation 3.01 mm, photogrammetry deviation 1.34 mm), with seven out of eight deviations being statistically significant. For the Lego brick, from a total of 32 angles, 19 values demonstrated a significant difference from the original 90° angles. The average deviation was 6.5° (smart device scanning deviation 10.1°, photogrammetry deviation 2.8°). CONCLUSION: Manual photogrammetry demonstrated greater accuracy when creating three-dimensional face scan images; however, smart devices are more user-friendly. Dental professionals should monitor camera and smart device technical improvements carefully when choosing and adequate technique for 3D scanning. Springer Berlin Heidelberg 2022-03-05 2023 /pmc/articles/PMC9938030/ /pubmed/35249150 http://dx.doi.org/10.1007/s10006-022-01050-5 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Original Article
Bartella, Alexander K.
Laser, Josefine
Kamal, Mohammad
Krause, Matthias
Neuhaus, Michael
Pausch, Niels C.
Sander, Anna K.
Lethaus, Bernd
Zimmerer, Rüdiger
Accuracy of low-cost alternative facial scanners: a prospective cohort study
title Accuracy of low-cost alternative facial scanners: a prospective cohort study
title_full Accuracy of low-cost alternative facial scanners: a prospective cohort study
title_fullStr Accuracy of low-cost alternative facial scanners: a prospective cohort study
title_full_unstemmed Accuracy of low-cost alternative facial scanners: a prospective cohort study
title_short Accuracy of low-cost alternative facial scanners: a prospective cohort study
title_sort accuracy of low-cost alternative facial scanners: a prospective cohort study
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9938030/
https://www.ncbi.nlm.nih.gov/pubmed/35249150
http://dx.doi.org/10.1007/s10006-022-01050-5
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