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Bifid mandibular canals and their cortex thicknesses: A comparison study on images obtained from cone-beam and multislice computed tomography

BACKGROUND/PURPOSE: High prevalence of bifid mandibular canals has been visualized with various types of computerized tomography (CT). Along the canals, a various ranged corticalization was recently reported. The depiction of the fine anatomic structures on multislice and cone-beam CT images was com...

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Autores principales: Shen, E-Chin, Fu, Earl, Peng, Michelle, Hsieh, Yao-Dung, Tu, Hsiao-Pei, Fu, Min-Wen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Association for Dental Sciences of the Republic of China 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6395192/
https://www.ncbi.nlm.nih.gov/pubmed/30894967
http://dx.doi.org/10.1016/j.jds.2016.01.002
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author Shen, E-Chin
Fu, Earl
Peng, Michelle
Hsieh, Yao-Dung
Tu, Hsiao-Pei
Fu, Min-Wen
author_facet Shen, E-Chin
Fu, Earl
Peng, Michelle
Hsieh, Yao-Dung
Tu, Hsiao-Pei
Fu, Min-Wen
author_sort Shen, E-Chin
collection PubMed
description BACKGROUND/PURPOSE: High prevalence of bifid mandibular canals has been visualized with various types of computerized tomography (CT). Along the canals, a various ranged corticalization was recently reported. The depiction of the fine anatomic structures on multislice and cone-beam CT images was compared. MATERIAL AND METHODS: The presence or absence of the bifid canal was assessed on 327 images obtained by multislice CT (MSCT; n = 173) or by cone-beam CT (CBCT; n = 154), according to the configuration. The cortex thickness and distribution were also assessed. RESULTS: The prevalence of bifid canal detected by CBCT was significantly greater than that detected by MSCT (42.2% vs. 18.7% for hemi-mandibles and 58.4% vs. 30.6% for patients). Cortical thickness recorded by CBCT was significantly thinner than that recorded by MSCT (0.48 mm vs. 0.65 mm, P < 0.001); however, the distributions of corticalization detected by the two tomography methods were similar. There was a significant association of cortex thickness with CT type and corticalization degree (R(2) = 0.530, P < 0.001). CONCLUSION: Thinner cortices, but greater prevalence of bifid canals recorded by CBCT, compared to MSCT, suggests that clinicians should be cautious when using CT to interpret this fine anatomic structure.
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spelling pubmed-63951922019-03-20 Bifid mandibular canals and their cortex thicknesses: A comparison study on images obtained from cone-beam and multislice computed tomography Shen, E-Chin Fu, Earl Peng, Michelle Hsieh, Yao-Dung Tu, Hsiao-Pei Fu, Min-Wen J Dent Sci Original Article BACKGROUND/PURPOSE: High prevalence of bifid mandibular canals has been visualized with various types of computerized tomography (CT). Along the canals, a various ranged corticalization was recently reported. The depiction of the fine anatomic structures on multislice and cone-beam CT images was compared. MATERIAL AND METHODS: The presence or absence of the bifid canal was assessed on 327 images obtained by multislice CT (MSCT; n = 173) or by cone-beam CT (CBCT; n = 154), according to the configuration. The cortex thickness and distribution were also assessed. RESULTS: The prevalence of bifid canal detected by CBCT was significantly greater than that detected by MSCT (42.2% vs. 18.7% for hemi-mandibles and 58.4% vs. 30.6% for patients). Cortical thickness recorded by CBCT was significantly thinner than that recorded by MSCT (0.48 mm vs. 0.65 mm, P < 0.001); however, the distributions of corticalization detected by the two tomography methods were similar. There was a significant association of cortex thickness with CT type and corticalization degree (R(2) = 0.530, P < 0.001). CONCLUSION: Thinner cortices, but greater prevalence of bifid canals recorded by CBCT, compared to MSCT, suggests that clinicians should be cautious when using CT to interpret this fine anatomic structure. Association for Dental Sciences of the Republic of China 2016-06 2016-03-29 /pmc/articles/PMC6395192/ /pubmed/30894967 http://dx.doi.org/10.1016/j.jds.2016.01.002 Text en Copyright © 2016, Association for Dental Sciences of the Republic of China. Published by Elsevier Taiwan LLC. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Original Article
Shen, E-Chin
Fu, Earl
Peng, Michelle
Hsieh, Yao-Dung
Tu, Hsiao-Pei
Fu, Min-Wen
Bifid mandibular canals and their cortex thicknesses: A comparison study on images obtained from cone-beam and multislice computed tomography
title Bifid mandibular canals and their cortex thicknesses: A comparison study on images obtained from cone-beam and multislice computed tomography
title_full Bifid mandibular canals and their cortex thicknesses: A comparison study on images obtained from cone-beam and multislice computed tomography
title_fullStr Bifid mandibular canals and their cortex thicknesses: A comparison study on images obtained from cone-beam and multislice computed tomography
title_full_unstemmed Bifid mandibular canals and their cortex thicknesses: A comparison study on images obtained from cone-beam and multislice computed tomography
title_short Bifid mandibular canals and their cortex thicknesses: A comparison study on images obtained from cone-beam and multislice computed tomography
title_sort bifid mandibular canals and their cortex thicknesses: a comparison study on images obtained from cone-beam and multislice computed tomography
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6395192/
https://www.ncbi.nlm.nih.gov/pubmed/30894967
http://dx.doi.org/10.1016/j.jds.2016.01.002
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