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A rare case of maxillary first molar with single root and single canal diagnosed using spiral computed tomographic scan.1例通过螺旋计算机断层扫描诊断的上颌第一磨牙单根单根管罕见病例。
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Cone beam computed tomography in Endodontics - a review.根管治疗中的锥形束计算机断层扫描——综述。
Int Endod J. 2015 Jan;48(1):3-15. doi: 10.1111/iej.12270. Epub 2014 Apr 2.
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Current challenges and concepts in the preparation of root canal systems: a review.根管系统预备中的当前挑战与概念：综述
J Endod. 2004 Aug;30(8):559-67. doi: 10.1097/01.don.0000129039.59003.9d.
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Four second molars with single roots and single canals in the same patient.同一患者的四颗单根单根管的第二磨牙。
Int Endod J. 2000 Mar;33(2):138-42. doi: 10.1046/j.1365-2591.2000.00272.x.
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Radiographic aids in the detection of extra root canals.用于检测额外根管的影像学辅助手段。
Oral Surg Oral Med Oral Pathol. 1974 May;37(5):762-72. doi: 10.1016/0030-4220(74)90142-x.
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Quantitative evaluation of digital dental radiograph imaging systems.
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一例罕见的三颗单根恒第二磨牙病例：锥形束计算机断层扫描（CBCT）诊断

A rare case of three single rooted permanent second molars: A diagnosis with cone beam computed tomography (CBCT).

作者信息

Koul Monika, Shahi Mrinalini, Abdullah Ahsan, Upadhyay Vinod

机构信息

Department of Paedodontics and Preventive Dentistry, CPGIDS & H, Lucknow, Uttar Pradesh, India.

出版信息

J Oral Biol Craniofac Res. 2017 May-Aug;7(2):137-140. doi: 10.1016/j.jobcr.2017.04.003. Epub 2017 Apr 22.

DOI:10.1016/j.jobcr.2017.04.003
PMID:28706790
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5497391/
Abstract

The aim of this article is to present a case with an unusual morphology of maxillary second molars on both sides and a mandibular second molar on right side in the same patient which was observed during routine endodontic procedure. Three second permanent molars had single root, single canal and an accurate assessment of this unusual morphology was made with the help of radiographs and cone beam computed tomography (CBCT). This report extends the range of known possible anatomical variations to include teeth with lesser number of roots and canals.

摘要

本文旨在呈现一例在常规牙髓治疗过程中观察到的病例，该患者双侧上颌第二磨牙及右侧下颌第二磨牙形态异常。三颗第二恒磨牙均为单根单管，借助X光片和锥形束计算机断层扫描（CBCT）对这种异常形态进行了准确评估。本报告扩展了已知可能的解剖变异范围，将牙根和根管数量较少的牙齿纳入其中。