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Influence of magnification and superimposition of structures on cephalometric diagnosis

OBJECTIVE: The purpose of this study was to assess the influence of magnification and superimposition of structures on CBCT-generated lateral cephalometric radiographs (LCR) using different segments of the cranium. METHODS: CBCT scans of 10 patients were selected. Four LCR were generated using Dolph...

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Autores principales: de Paula, Leonardo Koerich, Solon-de-Mello, Priscilla de Almeida, Mattos, Claudia Trindade, Ruellas, Antônio Carlos de Oliveira, Sant'Anna, Eduardo Franzotti
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Dental Press International 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4445222/
https://www.ncbi.nlm.nih.gov/pubmed/25992984
http://dx.doi.org/10.1590/2176-9451.20.2.029-034.oar
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author de Paula, Leonardo Koerich
Solon-de-Mello, Priscilla de Almeida
Mattos, Claudia Trindade
Ruellas, Antônio Carlos de Oliveira
Sant'Anna, Eduardo Franzotti
author_facet de Paula, Leonardo Koerich
Solon-de-Mello, Priscilla de Almeida
Mattos, Claudia Trindade
Ruellas, Antônio Carlos de Oliveira
Sant'Anna, Eduardo Franzotti
author_sort de Paula, Leonardo Koerich
collection PubMed
description OBJECTIVE: The purpose of this study was to assess the influence of magnification and superimposition of structures on CBCT-generated lateral cephalometric radiographs (LCR) using different segments of the cranium. METHODS: CBCT scans of 10 patients were selected. Four LCR were generated using Dolphin Imaging((r)) software: full-face, right side, left side and center of the head. A total of 40 images were imported into Radiocef Studio 2((r)), and the angles of the most common cephalometric analyses were traced by the same observer twice and within a 10-day interval. Statistical analyses included intraexaminer agreement and comparison between methods by means of intraclass correlation coefficient (ICC) and Bland-Altman agreement tests. RESULTS: Intraexaminer agreement of the angles assessed by ICC was excellent (> 0.90) for 83% of measurements, good (between 0.75 and 0.90) for 15%, and moderate (between 0.50 and 0.75) for 2% of measurements. The comparison between methods by ICC was excellent for 68% of measurements, good for 26%, and moderate for 6%. Variables presenting wider confidence intervals (> 6(o)) in the Bland-Altman tests, in intraexaminer assessment, were: mandibular incisor angle, maxillary incisor angle, and occlusal plane angle. And in comparison methods the variables with wider confidence interval were: mandibular incisor, maxillary incisor, GoGn, occlusal plane angle, Frankfort horizontal plane (FHP), and CoA. CONCLUSION: Superimposition of structures seemed to influence the results more than magnification, and neither one of them significantly influenced the measurements. Considerable individual variability may occur, especially for mandibular and maxillary incisors, FHP and occlusal plane.
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spelling pubmed-44452222015-05-28 Influence of magnification and superimposition of structures on cephalometric diagnosis de Paula, Leonardo Koerich Solon-de-Mello, Priscilla de Almeida Mattos, Claudia Trindade Ruellas, Antônio Carlos de Oliveira Sant'Anna, Eduardo Franzotti Dental Press J Orthod Articles OBJECTIVE: The purpose of this study was to assess the influence of magnification and superimposition of structures on CBCT-generated lateral cephalometric radiographs (LCR) using different segments of the cranium. METHODS: CBCT scans of 10 patients were selected. Four LCR were generated using Dolphin Imaging((r)) software: full-face, right side, left side and center of the head. A total of 40 images were imported into Radiocef Studio 2((r)), and the angles of the most common cephalometric analyses were traced by the same observer twice and within a 10-day interval. Statistical analyses included intraexaminer agreement and comparison between methods by means of intraclass correlation coefficient (ICC) and Bland-Altman agreement tests. RESULTS: Intraexaminer agreement of the angles assessed by ICC was excellent (> 0.90) for 83% of measurements, good (between 0.75 and 0.90) for 15%, and moderate (between 0.50 and 0.75) for 2% of measurements. The comparison between methods by ICC was excellent for 68% of measurements, good for 26%, and moderate for 6%. Variables presenting wider confidence intervals (> 6(o)) in the Bland-Altman tests, in intraexaminer assessment, were: mandibular incisor angle, maxillary incisor angle, and occlusal plane angle. And in comparison methods the variables with wider confidence interval were: mandibular incisor, maxillary incisor, GoGn, occlusal plane angle, Frankfort horizontal plane (FHP), and CoA. CONCLUSION: Superimposition of structures seemed to influence the results more than magnification, and neither one of them significantly influenced the measurements. Considerable individual variability may occur, especially for mandibular and maxillary incisors, FHP and occlusal plane. Dental Press International 2015 /pmc/articles/PMC4445222/ /pubmed/25992984 http://dx.doi.org/10.1590/2176-9451.20.2.029-034.oar Text en http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Articles
de Paula, Leonardo Koerich
Solon-de-Mello, Priscilla de Almeida
Mattos, Claudia Trindade
Ruellas, Antônio Carlos de Oliveira
Sant'Anna, Eduardo Franzotti
Influence of magnification and superimposition of structures on cephalometric diagnosis
title Influence of magnification and superimposition of structures on cephalometric diagnosis
title_full Influence of magnification and superimposition of structures on cephalometric diagnosis
title_fullStr Influence of magnification and superimposition of structures on cephalometric diagnosis
title_full_unstemmed Influence of magnification and superimposition of structures on cephalometric diagnosis
title_short Influence of magnification and superimposition of structures on cephalometric diagnosis
title_sort influence of magnification and superimposition of structures on cephalometric diagnosis
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4445222/
https://www.ncbi.nlm.nih.gov/pubmed/25992984
http://dx.doi.org/10.1590/2176-9451.20.2.029-034.oar
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