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A cone-beam computed tomography study of the prevalence and location of the second mesiobuccal root canal in maxillary molars

OBJECTIVES: This study aimed to investigate the incidence and location of the second mesiobuccal root (MB2) canal in maxillary molars with the aid of various measuring points and lines using cone-beam computed tomography (CT). MATERIALS AND METHODS: A total of 205 images of patients who underwent co...

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Autores principales: Lee, Seong-Ju, Lee, Eun-Hye, Park, Se-Hee, Cho, Kyung-Mo, Kim, Jin-Woo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Academy of Conservative Dentistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7691260/
https://www.ncbi.nlm.nih.gov/pubmed/33294411
http://dx.doi.org/10.5395/rde.2020.45.e46
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author Lee, Seong-Ju
Lee, Eun-Hye
Park, Se-Hee
Cho, Kyung-Mo
Kim, Jin-Woo
author_facet Lee, Seong-Ju
Lee, Eun-Hye
Park, Se-Hee
Cho, Kyung-Mo
Kim, Jin-Woo
author_sort Lee, Seong-Ju
collection PubMed
description OBJECTIVES: This study aimed to investigate the incidence and location of the second mesiobuccal root (MB2) canal in maxillary molars with the aid of various measuring points and lines using cone-beam computed tomography (CT). MATERIALS AND METHODS: A total of 205 images of patients who underwent cone-beam CT examinations between 2011 and 2015 as part of their dental diagnosis and treatment were included. There were 76 images of the maxillary first molar and 135 images of the maxillary second molar. Canal orifices were detected at −1 mm from the top of the pulpal floor on cone-beam CT images. Image assessment was performed by 2 observers in reformatted image planes using software. Assessments included measurement of the distance between the MB1 and MB2 canals, and the angles between the lines connecting the MB1-MB2 and distobuccal (DB)-palatal (P) canals. The data were analyzed using the student's t-test. RESULTS: The prevalence of the MB2 canal was 86.8% in the first molar and 28.9% in the second molar. The angle between the lines connecting the MB1-MB2 and DB-P canals was 2.3° ± 5.7° in the first molar and −3.95° ± 7.73° in the second molar. The distance between the MB1 and MB2 canals was 2.1 ± 0.44 mm in the first molar and 1.98 ± 0.42 mm in the second molar. CONCLUSIONS: The angles between the lines connecting the MB1-MB2 and DB-P canals was almost parallel. These findings may aid in the prediction of the location of the MB2 canal orifice.
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spelling pubmed-76912602020-12-07 A cone-beam computed tomography study of the prevalence and location of the second mesiobuccal root canal in maxillary molars Lee, Seong-Ju Lee, Eun-Hye Park, Se-Hee Cho, Kyung-Mo Kim, Jin-Woo Restor Dent Endod Research Article OBJECTIVES: This study aimed to investigate the incidence and location of the second mesiobuccal root (MB2) canal in maxillary molars with the aid of various measuring points and lines using cone-beam computed tomography (CT). MATERIALS AND METHODS: A total of 205 images of patients who underwent cone-beam CT examinations between 2011 and 2015 as part of their dental diagnosis and treatment were included. There were 76 images of the maxillary first molar and 135 images of the maxillary second molar. Canal orifices were detected at −1 mm from the top of the pulpal floor on cone-beam CT images. Image assessment was performed by 2 observers in reformatted image planes using software. Assessments included measurement of the distance between the MB1 and MB2 canals, and the angles between the lines connecting the MB1-MB2 and distobuccal (DB)-palatal (P) canals. The data were analyzed using the student's t-test. RESULTS: The prevalence of the MB2 canal was 86.8% in the first molar and 28.9% in the second molar. The angle between the lines connecting the MB1-MB2 and DB-P canals was 2.3° ± 5.7° in the first molar and −3.95° ± 7.73° in the second molar. The distance between the MB1 and MB2 canals was 2.1 ± 0.44 mm in the first molar and 1.98 ± 0.42 mm in the second molar. CONCLUSIONS: The angles between the lines connecting the MB1-MB2 and DB-P canals was almost parallel. These findings may aid in the prediction of the location of the MB2 canal orifice. The Korean Academy of Conservative Dentistry 2020-09-03 /pmc/articles/PMC7691260/ /pubmed/33294411 http://dx.doi.org/10.5395/rde.2020.45.e46 Text en Copyright © 2020. The Korean Academy of Conservative Dentistry https://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Lee, Seong-Ju
Lee, Eun-Hye
Park, Se-Hee
Cho, Kyung-Mo
Kim, Jin-Woo
A cone-beam computed tomography study of the prevalence and location of the second mesiobuccal root canal in maxillary molars
title A cone-beam computed tomography study of the prevalence and location of the second mesiobuccal root canal in maxillary molars
title_full A cone-beam computed tomography study of the prevalence and location of the second mesiobuccal root canal in maxillary molars
title_fullStr A cone-beam computed tomography study of the prevalence and location of the second mesiobuccal root canal in maxillary molars
title_full_unstemmed A cone-beam computed tomography study of the prevalence and location of the second mesiobuccal root canal in maxillary molars
title_short A cone-beam computed tomography study of the prevalence and location of the second mesiobuccal root canal in maxillary molars
title_sort cone-beam computed tomography study of the prevalence and location of the second mesiobuccal root canal in maxillary molars
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7691260/
https://www.ncbi.nlm.nih.gov/pubmed/33294411
http://dx.doi.org/10.5395/rde.2020.45.e46
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