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单根单根管的下颌第一恒磨牙：一种罕见形态的病例报告

Primary mandibular first molar with single root and single canal: a case report of a rare morphology.

作者信息

Bahrololoomi Zahra, Ghafourifard Roya, Soleimani Ali Asghar

机构信息

Associate Professor, Department of Pediatric Dental School, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

Assistant Professor, Department of Pediatric Dental School, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

出版信息

J Dent (Tehran). 2014 May;11(3):355-60. Epub 2014 May 31.

PMID:25628671
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4290764/
Abstract

Single rooted primary mandibular first molar is a rare developmental anomaly. Literatures reveal that failure of invagination of Hertwig's epithelial root sheath leads to this unusual root form. Thorough knowledge of root canal morphology and anatomical variations of primary teeth can help a pediatric dentist in successful root canal treatment. Hereby, we describe two cases of primary mandibular first molars with an unusual morphology as a single root called pyramidal molar.

摘要

单根原发性下颌第一磨牙是一种罕见的发育异常。文献表明，赫特维希上皮根鞘内陷失败会导致这种异常的牙根形态。全面了解乳牙的根管形态和解剖变异有助于儿童牙医成功进行根管治疗。在此，我们描述两例原发性下颌第一磨牙形态异常为单根的病例，即锥形磨牙。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cf1a/4290764/97086da8409e/jod-11-355f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cf1a/4290764/be1d1e17214d/jod-11-355f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cf1a/4290764/bef9e24f6859/jod-11-355f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cf1a/4290764/978af28d87df/jod-11-355f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cf1a/4290764/835b1db90440/jod-11-355f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cf1a/4290764/97086da8409e/jod-11-355f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cf1a/4290764/be1d1e17214d/jod-11-355f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cf1a/4290764/bef9e24f6859/jod-11-355f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cf1a/4290764/978af28d87df/jod-11-355f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cf1a/4290764/835b1db90440/jod-11-355f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cf1a/4290764/97086da8409e/jod-11-355f5.jpg

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本文引用的文献

1
Single-rooted primary first molars.单根乳第一磨牙
Indian J Dent Res. 2012 Jan-Feb;23(1):104-6. doi: 10.4103/0970-9290.99050.
2
An unusual occurrence of multiple dental anomalies in a single nonsyndromic patient: a case report.一名非综合征患者出现罕见的多种牙齿异常情况：病例报告。
Case Rep Dent. 2012;2012:426091. doi: 10.1155/2012/426091. Epub 2012 Jun 25.
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Prevalence of taurodont and pyramidal molars in a German population.德国人群中尖磨牙和尖顶磨牙的流行情况。
伊朗西北部儿童下颌乳磨牙三根的患病率。
Int J Dent. 2021 Oct 26;2021:5643668. doi: 10.1155/2021/5643668. eCollection 2021.
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Single rooted primary first molar with nonsyndromic hypodontia: A rare case report.单根原发性第一磨牙伴非综合征性牙发育不全：一例罕见病例报告。
J Oral Maxillofac Pathol. 2015 May-Aug;19(2):268. doi: 10.4103/0973-029X.164559.
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An in vitro study of root and canal morphology of human deciduous molars in an Iranian population.伊朗人群中人类乳磨牙根管形态的体外研究。
J Oral Sci. 2010 Sep;52(3):397-403. doi: 10.2334/josnusd.52.397.
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Permanent maxillary first molar with single root and single canal: a case report of a rare morphology.单根单根管的上颌第一恒磨牙：一例罕见形态的病例报告
J Indian Soc Pedod Prev Dent. 2010 Apr-Jun;28(2):121-5. doi: 10.4103/0970-4388.66755.
6
Taurodontism in children with hypodontia and supernumerary teeth: a case control study.恒牙先天缺失和多生牙患儿的牛牙样牙症：一项病例对照研究。
Pediatr Dent. 2010 Mar-Apr;32(2):134-40.
7
Study of root canal accessibility in human primary molars.人类乳磨牙根管通畅性的研究。
J Oral Sci. 2008 Mar;50(1):69-74. doi: 10.2334/josnusd.50.69.
8
Endodontic management of a maxillary first molar with a single root and a single canal diagnosed with the aid of spiral CT: a case report.借助螺旋CT诊断的上颌单根单管第一磨牙的根管治疗：病例报告
J Endod. 2006 Jul;32(7):687-91. doi: 10.1016/j.joen.2005.10.057. Epub 2006 Apr 4.
9
Root canal configuration of deciduous mandibular first molars--an in vitro study.下颌第一乳磨牙根管形态——一项体外研究
J Indian Soc Pedod Prev Dent. 2005 Sep;23(3):134-7. doi: 10.4103/0970-4388.16886.
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Taurodontism in deciduous Molars - A Case Report.乳牙牛牙症——一例报告
J Indian Soc Pedod Prev Dent. 2004 Oct-Dec;22(4):193-6.