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Mandibular molar C-shaped root canals in 5th millennium BC China
DC Field | Value | Language |
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dc.contributor.author | Ren, Hui Ying | - |
dc.contributor.author | Zhao, Yong Sheng | - |
dc.contributor.author | Yoo, Yeon-Jee | - |
dc.contributor.author | Zhang, Xiao Wen | - |
dc.contributor.author | Fang, Hui | - |
dc.contributor.author | Wang, Fang | - |
dc.contributor.author | Perinpanayagam, Hiran | - |
dc.contributor.author | Kum, Kee-Yeon | - |
dc.contributor.author | Gu, Yu | - |
dc.date.accessioned | 2022-05-20T00:42:40Z | - |
dc.date.available | 2022-05-20T00:42:40Z | - |
dc.date.created | 2020-07-22 | - |
dc.date.created | 2020-07-22 | - |
dc.date.issued | 2020-09 | - |
dc.identifier.citation | Archives of Oral Biology, Vol.117, p. 104773 | - |
dc.identifier.issn | 0003-9969 | - |
dc.identifier.uri | https://hdl.handle.net/10371/179865 | - |
dc.description.abstract | Objective: The aim of this study was to analyze the occurrence and variations in C-shaped canals in ancient Chinese teeth and compare the differences of these features between ancient and age-matched modern populations. Design: Approximately 5000-year-old craniofacial bone remains were collected from the fossils of 38 individuals (total: 68 mandibular second molars) excavated from the Jiaojia site. The control group comprised of an equal number of randomly selected modern samples. We used cone-beam computed tomography to scan the mandible along the apex-crown axis and analyzed the canal morphology, based on Fan's categorization criterion, at 2 mm, 5 mm, and 8 mm to the apical level. Grooves on the lingual and buccal sides were also recorded. Results: The proportion of C-shaped roots among ancient samples on the left and right sides were 48.57 % (17/35 teeth) and 54.55 % (18/33 teeth), respectively, and 51.47 % (35/68 teeth) in the total sample. Conversely, in the control group, 44.12 % (15/34) and 38.24 % (13/34) occurred on the left and right sides, respectively, and 41.18 % (28/68) in the total sample. Among the C-shaped canals from the Jiaojia site samples, the classification type changed between two adjacent levels in 84.31 % of samples. Approximately 35 (51.5 %) teeth had a fused root, 20 (29.41 %) had one shallow buccal and one deep lingual groove. The occurrence of C-shape variation was not significantly correlated with time (p>0.05). Conclusions: This study identified a high rate of C-shaped root canals among individuals of Jiaojia who lived approximately 5000 years ago. | - |
dc.language | 영어 | - |
dc.publisher | Pergamon Press Ltd. | - |
dc.title | Mandibular molar C-shaped root canals in 5th millennium BC China | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.archoralbio.2020.104773 | - |
dc.citation.journaltitle | Archives of Oral Biology | - |
dc.identifier.wosid | 000558537200006 | - |
dc.identifier.scopusid | 2-s2.0-85085870786 | - |
dc.citation.startpage | 104773 | - |
dc.citation.volume | 117 | - |
dc.description.isOpenAccess | Y | - |
dc.contributor.affiliatedAuthor | Kum, Kee-Yeon | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | BEAM COMPUTED-TOMOGRAPHY | - |
dc.subject.keywordPlus | 2ND MOLARS | - |
dc.subject.keywordPlus | EVOLUTIONARY IMPLICATIONS | - |
dc.subject.keywordPlus | POPULATION HISTORY | - |
dc.subject.keywordPlus | LATE PLEISTOCENE | - |
dc.subject.keywordPlus | MORPHOLOGY | - |
dc.subject.keywordPlus | ANATOMY | - |
dc.subject.keywordPlus | TEETH | - |
dc.subject.keywordPlus | MAXILLARY | - |
dc.subject.keywordPlus | MICROEVOLUTION | - |
dc.subject.keywordAuthor | C-shaped root canal | - |
dc.subject.keywordAuthor | Cone-Beam computed tomography | - |
dc.subject.keywordAuthor | Craniofacial bone remains | - |
dc.subject.keywordAuthor | Mandibular second molar | - |
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