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Topographic Analysis of the Isthmus in Mesiobuccal and Mesial Roots of First Molars in a South Korean Population

Authors
 Sumi Kang  ;  Hui-Wen Yu  ;  Yooseok Shin  ;  Bekir Karabucak  ;  Sunil Kim  ;  Euiseong Kim 
Citation
 SCIENTIFIC REPORTS, Vol.10(1) : 1247, 2020 
Journal Title
 SCIENTIFIC REPORTS 
Issue Date
2020
Abstract
The purpose of this study was to evaluate the incidence and microscopic anatomy of the isthmus to provide more precise anatomical information about the mesiobuccal (MB) roots of the maxillary first molars and the mesial (M) roots of the mandibular first molars. Twenty-eight maxillary and 31 mandibular first molars were embedded, sectioned, stained, and observed at 30× magnification to evaluate the incidence and microscopic anatomy of the isthmus. The incidence of an isthmus 3 mm from the apex was 89.3% and 100% in the MB roots of the maxillary first molars and in the M roots of the mandibular first molars, respectively. The mean dentin thickness between the isthmus and the distal root surface was <1 mm at a distance of 3 mm from the apex in both types of roots. In this study, whenever two main canals were located in the MB roots of the maxillary first molars and in the M roots of the mandibular first molars, the likelihood of the presence of an isthmus increased. Therefore, clinicians should be aware of the thinnest dimensions in the distal surface of the MB roots of the maxillary first molars and the M roots of the mandibular first molars during nonsurgical and surgical root canal treatment.
Files in This Item:
T202000340.pdf Download
DOI
10.1038/s41598-020-58364-1
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Conservative Dentistry (보존과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Sumi(강수미) ORCID logo https://orcid.org/0000-0002-4682-6540
Kim, Sun Il(김선일) ORCID logo https://orcid.org/0000-0002-8889-9844
Kim, Eui Seong(김의성) ORCID logo https://orcid.org/0000-0003-2126-4761
Shin, Yoo Seok(신유석) ORCID logo https://orcid.org/0000-0003-1121-2570
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/175304
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