Cargando…

Cone-beam computed tomography investigation of middle mesial canals and isthmuses in mandibular first molars in a Chinese population

BACKGROUND: While there is ample research into the anatomy of mandibular molars, little is known regarding isthmuses and middle mesial (MM) canals in Chinese populations. The goal of this study was to determine the prevalence of MM canals and isthmuses in the mesial root of mandibular first molars u...

Descripción completa

Detalles Bibliográficos
Autores principales: Xu, Shuaimei, Dao, Junfeng, Liu, Zhongjun, Zhang, Zhiyong, Lu, Yu, Zeng, Xiongqun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7206827/
https://www.ncbi.nlm.nih.gov/pubmed/32384929
http://dx.doi.org/10.1186/s12903-020-01126-2
_version_ 1783530491018739712
author Xu, Shuaimei
Dao, Junfeng
Liu, Zhongjun
Zhang, Zhiyong
Lu, Yu
Zeng, Xiongqun
author_facet Xu, Shuaimei
Dao, Junfeng
Liu, Zhongjun
Zhang, Zhiyong
Lu, Yu
Zeng, Xiongqun
author_sort Xu, Shuaimei
collection PubMed
description BACKGROUND: While there is ample research into the anatomy of mandibular molars, little is known regarding isthmuses and middle mesial (MM) canals in Chinese populations. The goal of this study was to determine the prevalence of MM canals and isthmuses in the mesial root of mandibular first molars using Cone-beam Computed Tomography. METHODS: Cone-beam Computed Tomography images of 357 mature mandibular first molars were retrospectively analyzed. Presence of isthmuses and MM canals, and the length of isthmuses in the mesial root were recorded. Meanwhile, we also recorded possible correlated factors such as demographics, side of mandible, presence of separated distal-lingual roots. RESULTS: Of these 357 teeth, 209 showed evidence of either complete or partial communication in the mesial root. Of these, 11(3.1%) exhibited true MM canals while 198(55.5%) exhibited isthmuses. Sex or side of mandible was not correlated with the prevalence of isthmuses (P > 0.05). However, there was a significant association between the presence of a distal-lingual root and the prevalence of such communication (P < 0.001). The average length of isthmuses was 4.3 ± 3.1 mm. CONCLUSIONS: We detected high rate of isthmuses and low rate of MM canals in mesial roots of mandibular first molars, which is important as such areas should be identified and cleaned during root canal treatment.
format Online
Article
Text
id pubmed-7206827
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher BioMed Central
record_format MEDLINE/PubMed
spelling pubmed-72068272020-05-15 Cone-beam computed tomography investigation of middle mesial canals and isthmuses in mandibular first molars in a Chinese population Xu, Shuaimei Dao, Junfeng Liu, Zhongjun Zhang, Zhiyong Lu, Yu Zeng, Xiongqun BMC Oral Health Research Article BACKGROUND: While there is ample research into the anatomy of mandibular molars, little is known regarding isthmuses and middle mesial (MM) canals in Chinese populations. The goal of this study was to determine the prevalence of MM canals and isthmuses in the mesial root of mandibular first molars using Cone-beam Computed Tomography. METHODS: Cone-beam Computed Tomography images of 357 mature mandibular first molars were retrospectively analyzed. Presence of isthmuses and MM canals, and the length of isthmuses in the mesial root were recorded. Meanwhile, we also recorded possible correlated factors such as demographics, side of mandible, presence of separated distal-lingual roots. RESULTS: Of these 357 teeth, 209 showed evidence of either complete or partial communication in the mesial root. Of these, 11(3.1%) exhibited true MM canals while 198(55.5%) exhibited isthmuses. Sex or side of mandible was not correlated with the prevalence of isthmuses (P > 0.05). However, there was a significant association between the presence of a distal-lingual root and the prevalence of such communication (P < 0.001). The average length of isthmuses was 4.3 ± 3.1 mm. CONCLUSIONS: We detected high rate of isthmuses and low rate of MM canals in mesial roots of mandibular first molars, which is important as such areas should be identified and cleaned during root canal treatment. BioMed Central 2020-05-08 /pmc/articles/PMC7206827/ /pubmed/32384929 http://dx.doi.org/10.1186/s12903-020-01126-2 Text en © The Author(s) 2020 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/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research Article
Xu, Shuaimei
Dao, Junfeng
Liu, Zhongjun
Zhang, Zhiyong
Lu, Yu
Zeng, Xiongqun
Cone-beam computed tomography investigation of middle mesial canals and isthmuses in mandibular first molars in a Chinese population
title Cone-beam computed tomography investigation of middle mesial canals and isthmuses in mandibular first molars in a Chinese population
title_full Cone-beam computed tomography investigation of middle mesial canals and isthmuses in mandibular first molars in a Chinese population
title_fullStr Cone-beam computed tomography investigation of middle mesial canals and isthmuses in mandibular first molars in a Chinese population
title_full_unstemmed Cone-beam computed tomography investigation of middle mesial canals and isthmuses in mandibular first molars in a Chinese population
title_short Cone-beam computed tomography investigation of middle mesial canals and isthmuses in mandibular first molars in a Chinese population
title_sort cone-beam computed tomography investigation of middle mesial canals and isthmuses in mandibular first molars in a chinese population
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7206827/
https://www.ncbi.nlm.nih.gov/pubmed/32384929
http://dx.doi.org/10.1186/s12903-020-01126-2
work_keys_str_mv AT xushuaimei conebeamcomputedtomographyinvestigationofmiddlemesialcanalsandisthmusesinmandibularfirstmolarsinachinesepopulation
AT daojunfeng conebeamcomputedtomographyinvestigationofmiddlemesialcanalsandisthmusesinmandibularfirstmolarsinachinesepopulation
AT liuzhongjun conebeamcomputedtomographyinvestigationofmiddlemesialcanalsandisthmusesinmandibularfirstmolarsinachinesepopulation
AT zhangzhiyong conebeamcomputedtomographyinvestigationofmiddlemesialcanalsandisthmusesinmandibularfirstmolarsinachinesepopulation
AT luyu conebeamcomputedtomographyinvestigationofmiddlemesialcanalsandisthmusesinmandibularfirstmolarsinachinesepopulation
AT zengxiongqun conebeamcomputedtomographyinvestigationofmiddlemesialcanalsandisthmusesinmandibularfirstmolarsinachinesepopulation