Root anatomy and canal morphology of mandibular first premolars in a Chinese population

Abstract This study was to investigate root anatomy and root canal morphology of mandibular first premolars in a Chinese population. 178 human permanent mandibular first premolars extracted from a native Chinese population were collected, scanned using micro-computed tomography and reconstructed thr...

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Autores principales:	Lei Dou, Duojiao Li, Tingting Xu, Yin Tang, Deqin Yang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b7c07e5459614d638318f3e8f3ed6a35
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spelling	oai:doaj.org-article:b7c07e5459614d638318f3e8f3ed6a352021-12-02T16:06:49ZRoot anatomy and canal morphology of mandibular first premolars in a Chinese population10.1038/s41598-017-00871-92045-2322https://doaj.org/article/b7c07e5459614d638318f3e8f3ed6a352017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00871-9https://doaj.org/toc/2045-2322Abstract This study was to investigate root anatomy and root canal morphology of mandibular first premolars in a Chinese population. 178 human permanent mandibular first premolars extracted from a native Chinese population were collected, scanned using micro-computed tomography and reconstructed three-dimensionally. The number of roots and canals, canal configuration and radicular grooves were investigated. The root canal morphology was categorized according to Vertucci’s criteria. The radicular grooves were scored according to the Arizona State University dental anthropology scoring system (ASUDAS), and the correlation between scores for radicular grooves and root canal morphology was analyzed. Almost all the samples were single-rooted (99.4%). 64.04% of teeth possessed type I canal systems, whilst 34.27% had two canals and 1.69% had three canals. According to ASUDAS, the scores of radicualr grooves were 56.74%, 16.85%, 12.36%, 10.11%, 3.37% and 0.56% respectively from grade 0 to grade 5. The roots with radicular grooves (grade 3 or 4) were defined as Tome’s anomalous root and these roots have a high incidence of C-shape configurations (66.67%) and multiple-canal systems (100%). There is complicated variation of the root anatomy and canal morphology of mandibular first premolars in southwestern Chinese population, which needs special attention and careful assessment for endodontic treatment.Lei DouDuojiao LiTingting XuYin TangDeqin YangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lei Dou Duojiao Li Tingting Xu Yin Tang Deqin Yang Root anatomy and canal morphology of mandibular first premolars in a Chinese population
description	Abstract This study was to investigate root anatomy and root canal morphology of mandibular first premolars in a Chinese population. 178 human permanent mandibular first premolars extracted from a native Chinese population were collected, scanned using micro-computed tomography and reconstructed three-dimensionally. The number of roots and canals, canal configuration and radicular grooves were investigated. The root canal morphology was categorized according to Vertucci’s criteria. The radicular grooves were scored according to the Arizona State University dental anthropology scoring system (ASUDAS), and the correlation between scores for radicular grooves and root canal morphology was analyzed. Almost all the samples were single-rooted (99.4%). 64.04% of teeth possessed type I canal systems, whilst 34.27% had two canals and 1.69% had three canals. According to ASUDAS, the scores of radicualr grooves were 56.74%, 16.85%, 12.36%, 10.11%, 3.37% and 0.56% respectively from grade 0 to grade 5. The roots with radicular grooves (grade 3 or 4) were defined as Tome’s anomalous root and these roots have a high incidence of C-shape configurations (66.67%) and multiple-canal systems (100%). There is complicated variation of the root anatomy and canal morphology of mandibular first premolars in southwestern Chinese population, which needs special attention and careful assessment for endodontic treatment.
format	article
author	Lei Dou Duojiao Li Tingting Xu Yin Tang Deqin Yang
author_facet	Lei Dou Duojiao Li Tingting Xu Yin Tang Deqin Yang
author_sort	Lei Dou
title	Root anatomy and canal morphology of mandibular first premolars in a Chinese population
title_short	Root anatomy and canal morphology of mandibular first premolars in a Chinese population
title_full	Root anatomy and canal morphology of mandibular first premolars in a Chinese population
title_fullStr	Root anatomy and canal morphology of mandibular first premolars in a Chinese population
title_full_unstemmed	Root anatomy and canal morphology of mandibular first premolars in a Chinese population
title_sort	root anatomy and canal morphology of mandibular first premolars in a chinese population
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/b7c07e5459614d638318f3e8f3ed6a35
work_keys_str_mv	AT leidou rootanatomyandcanalmorphologyofmandibularfirstpremolarsinachinesepopulation AT duojiaoli rootanatomyandcanalmorphologyofmandibularfirstpremolarsinachinesepopulation AT tingtingxu rootanatomyandcanalmorphologyofmandibularfirstpremolarsinachinesepopulation AT yintang rootanatomyandcanalmorphologyofmandibularfirstpremolarsinachinesepopulation AT deqinyang rootanatomyandcanalmorphologyofmandibularfirstpremolarsinachinesepopulation
_version_	1718384865648312320

Root anatomy and canal morphology of mandibular first premolars in a Chinese population

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