Mandibular first molar with C-shaped root canal system: a two-case report

doi:10.7518/hxkq.2018.05.021

Abstract

Abstract:

The root and canal anatomy of the mandibular first molar is highly complicated. A mandibular first molar with a C-shaped root canal system is rare. This article describes two different cases of this system. Case 1 has a complete C-shaped fused root. The root canal is characterized by a mesial lingual root canal and a C-shaped fused root canal. Case 2 has a C-shaped fused root in the buccal region and a distal lingual root. The root canal is characterized by a type Ⅱ-Ⅰroot canal in the buccal region and a distal lingual root canal.

Key words: mandibular first molar, C-shaped root canal system, root canal treatment

CLC Number:

R781

Di Wu,Jin Zhang,Wei Wang,Bing-chang Xin. Mandibular first molar with C-shaped root canal system: a two-case report[J]. West China Journal of Stomatology, 2018, 36(5): 576-579.

Figures/Tables 5

References 15

[1]	高荣寰 . 下颌第一恒磨牙5根管2例[J]. 北京口腔医学, 2008,16(6):321.
	Gao RH . Mandibular first molar of five root canals: two cases report[J]. Beijing J Stomatol, 2008,16(6):321.
[2]	王瑶, 郑广宁, 郑庆华 , 等. 下颌恒磨牙根管系统的锥形束CT研究[J]. 泸州医学院学报, 2011,34(5):616-619. doi: 10.3969/j.issn.1000-2669.2011.05.038 URL
	Wang Y, Zheng GN, Zheng QH , et al. A cone-beam com-puted tomography study of mandibular permanent molar root canal system morphology[J]. J Luzhou Med Coll, 2011,34(5):616-619. doi: 10.3969/j.issn.1000-2669.2011.05.038 URL
[3]	姜楠, 周洲, 周耀 , 等. 华东地区中国人下颌第一恒磨牙根管形态的锥形束CT分析[J]. 南京医科大学学报(自然科学版), 2013,33(5):693-697. doi: 10.7655/NYDXBNS20130529 URL
	Jiang N, Zhou Z, Zhou Y , et al. Use of cone-beam computed tomography to evaluate root and canal morphology of man-dibular first molars in Chinese individuals[J]. Acta Univ Med Nanjing (Nat Sci), 2013,33(5):693-697. doi: 10.7655/NYDXBNS20130529 URL
[4]	姚娜, 贾立辉, 张晓东 , 等. 辽沈地区人群下颌第一磨牙牙根及根管解剖的CBCT观察[J]. 临床口腔医学杂志, 2014,30(4):205-207. doi: 10.3969/j.issn.1003-1634.2014.04.005 URL
	Yao N, Jia LH, Zhang XD , et al. Observation of the roots and canals morphology of mandibular first permanent molars in Liaoning province by cone-beam computed tomography[J]. J Clin Stomatol, 2014,30(4):205-207. doi: 10.3969/j.issn.1003-1634.2014.04.005 URL
[5]	Demirbuga S, Sekerci AE, Dinçer AN , et al. Use of cone-beam computed tomography to evaluate root and canal mor-phology of mandibular first and second molars in Turkish individuals[J]. Med Oral Patol Oral Cir Bucal, 2013,18(4):e737-e744.
[6]	李明霞, 王光平, 杨江华 . 青少年下颌第一恒磨牙牙根及根管的锥形束 CT 研究[J]. 实用口腔医学杂志, 2015,31(3):397-400. doi: 10.3969/j.issn.1001-3733.2015.03.022 URL
	Li MX, Wang GP, Yang JH . Investigation of root and root canal of mandibular first permanent molars in adolescents by cone-beam computed tomography[J]. J Pract Stomatol, 2015,31(3):397-400. doi: 10.3969/j.issn.1001-3733.2015.03.022 URL
[7]	王俊, 刘青梅, 程琳 . 双侧下颌第一恒磨牙融合根伴C形根管1例[J]. 国际口腔医学杂志, 2015,42(3):263-264. doi: 10.7518/gjkq.2015.03.004 URL
	Wang J, Liu QM, Cheng L . Bilateral mandibular permanent first molars with fused roots and C-shaped root canal[J]. Int J Stomatol, 2015,42(3):263-264. doi: 10.7518/gjkq.2015.03.004 URL
[8]	Manning SA . Root canal anatomy of mandibular second molars. Part Ⅱ. C-shaped canals[J]. Int Endod J, 1990,23(1):40-45. doi: 10.1111/j.1365-2591.1990.tb00801.x URL pmid: 2391179
[9]	Fan B, Cheung GS, Fan MW , et al. C-shaped canal system in mandibular second molars: Part Ⅰ—Anatomical features[J]. J Endod, 2004,30(12):899-903. doi: 10.1097/01.don.0000136207.12204.e4 URL pmid: 15564874
[10]	Fan B, Cheung GS, Fan MW , et al. C-shaped canal system in mandibular second molars: Part Ⅱ—Radiographic fea-tures[J]. J Endod, 2004,30(12):904-908. doi: 10.1097/01.don.0000136206.73115.93 URL
[11]	欧阳勇, 凌均棨, 陈慧芝 , 等. 下颌第二磨牙C形根管的临床研究[J]. 中山大学学报(医学科学版), 2003,24(s1):172-174.
	Ouyang Y, Ling JQ, Chen HZ , et al. Clinical research of C-shaped root canals in mandibular second molars[J]. J Sun Yat-Sen Univ (Med Sci), 2003,24(s1):172-174.
[12]	Al-Qudah AA, Awawdeh LA . Root and canal morphology of mandibular first and second molar teeth in a Jordanian population[J]. Int Endod J, 2009,42(9):775-784. doi: 10.1111/j.1365-2591.2009.01578.x URL pmid: 19549153
[13]	喻刚, 叶玲, 黄定明 , 等. 成都地区378颗中国人下颌第一恒磨牙远舌根的临床研究[J]. 实用口腔医学杂志, 2012,28(4):498-501.
	Yu G, Ye L, Huang DM , et al. Clinical study of radix ento-molaris in permanent mandibular first molars in Chinese individuals in Chengdu[J]. J Pract Stomatol, 2012,28(4):498-501.
[14]	李颖超, 刘荣森, 石校伟 . 老年人下颌磨牙牙根及根管的锥形束CT研究[J]. 中华老年口腔医学杂志, 2009,7(4):206-209. doi: 10.3969/j.issn.1672-2973.2009.04.005 URL
	Li YC, Liu RS, Shi XW . Investigation of root and root canal of mandibular molar in the elderly by cone beam computer tomography[J]. Chin J Geriatr Dent, 2009,7(4):206-209. doi: 10.3969/j.issn.1672-2973.2009.04.005 URL
[15]	范兵, 吴昊 . C形根管的形态特点及处理方法[J]. 中国实用口腔科杂志, 2011,4(9):521-524.
	Fan B, Wu H . The anatomical characteristics of C-shaped canal and its treatment[J]. Chin J Pract Stomatol, 2011,4(9):521-524.