锥形束CT应用于上颌第一磨牙近中颊根的研究
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摘要
目的利用锥形束CT(CBCT)研究上颌第一磨牙近中颊根的形态及其近中颊根第二根管(MB2)的发生率。方法随机选取150例患者共计300颗患牙的CBCT影像,按年龄分为三组,观察上颌第一磨牙近中颊根的形态,统计MB2检出率,MB2左右对称检出率,并比较MB2检出率和年龄间的差异。结果 MB2检出率为52.0%,左右对称检出率为42.9%,20~39岁年龄组的MB2检出率为82.0%,随着年龄的增加,MB2检出率明显降低,不同年龄组的MB2检出率差异有统计学意义(P<0.05)。结论上颌第一磨牙MB2有较高的发生率,CBCT可用于上颌第一磨牙根管形态的观察,能有效检出上颌第一磨牙MB2。
Objective To research morphology of mesiobuccal root of the maxillary first molar and the incidence of second mesiobuccal canal(MB2) in the maxillary first molar by using cone-beam computed tomography(CBCT). Methods CBCT images of 300 diseased teeth of 150 patients were randomly selected. They were allocated to three groups according to age. The morphology of mesiobuccal root of the maxillary first molar was observed and detection rates of MB2 and MB2 bilateral symmetry were recorded. In addition, Difference between detection rate of MB2 and age were compared. Results The detection rates of MB2 and MB2 bilateral symmetry were 52.0% and 42.9% respectively. The detection rate of MB2 in the 20 to 39 ages group was 82.0%. With the increasing of ages, the detection rate of MB2 was significantly decreased. Differences in detection rate of MB2 of different groups had statistical significance(P < 0.05). Conclusion Maxillary first molar MB2 has higher incidence. CMCT can be used to observe morphology of maxillary first molar and it can also effectively detect MB2 in the maxillary first molar.
Objective To research morphology of mesiobuccal root of the maxillary first molar and the incidence of second mesiobuccal canal(MB2) in the maxillary first molar by using cone-beam computed tomography(CBCT). Methods CBCT images of 300 diseased teeth of 150 patients were randomly selected. They were allocated to three groups according to age. The morphology of mesiobuccal root of the maxillary first molar was observed and detection rates of MB2 and MB2 bilateral symmetry were recorded. In addition, Difference between detection rate of MB2 and age were compared. Results The detection rates of MB2 and MB2 bilateral symmetry were 52.0% and 42.9% respectively. The detection rate of MB2 in the 20 to 39 ages group was 82.0%. With the increasing of ages, the detection rate of MB2 was significantly decreased. Differences in detection rate of MB2 of different groups had statistical significance(P < 0.05). Conclusion Maxillary first molar MB2 has higher incidence. CMCT can be used to observe morphology of maxillary first molar and it can also effectively detect MB2 in the maxillary first molar.
引文
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[11]高燕,安少锋,凌均棨.离体上颌磨牙近中颊根第二根管出现率的研究[J].中华口腔医学杂志,2005,41(9):521-524.
[12]Zhang R,Yang H,Yu X,et al.Use of CBCT to identify the morphology of maxillary permanent molar teeth in a Chinese subpopulation[J].International Endodontic Joural,2011,44(2):162-169.
[13]Adriana Gurgel Reis,Renata Grazziotin-Soares,Fernando Brando Barletta,et al.Second canal in mesiobuccal root of maxillary molars is correlated with root third and patient age:a cone-beam computed tomography study[J].Joural of endodontics,2013,39(5):588-592.
[14]刘文菲,崔广,宫琳.上颌第一磨牙近中颊根根管系统锥形束CT影像学观察[J].中国实用口腔科杂志,2014,7(8):479-481.
[15]Reis AG,Grazziotin SR,Barletta FB,et al.Second canal in mesiobuccal root of maxillary molars is correlated with root third and patient age:a cone-beam computed tomographic study[J].J Endod,2013,39(5):588-592.
[16]于世凤.牙体组织病理学[M].第5版,北京:人民卫生出版社,2006:41-70.
[17]Plotino G,Tocci L,Grande NM,et al.Symmetry of root and root canal morphology of maxillary and mandibular molars in a white population:a cone-beam computed tomography study in vivo[J].J Endod,2013,39(12):1545-1548.
[18]Llena C,Fernandez J,Ortolani PS,et al.Conebeam computed tomography analysis of root and canal morphology of mandibular premolars in a Spanish population[J].Imaging Sci Dent,2014,44(3):221-227.
[2]Abella F,Patel S,Duran SF,et al.Mandibular first molars with disto-lingual roots:review and clinical management[J].Int Endod J,2012,45(11):963-978.
[3]Cleghorn BM,Christie WH,Dong CC.Root and root canal morphology of the human permanent maxillary first molar:a literature review[J].J Endod,2006,32(9):813-821.
[4]Blaine MC,William HC,Cecilia CSD.Root and root canal morphology of the human permanent maxillary first molar:a literature review[J].Joural of Endodontics,2007,33(10):814-822.
[5]Wolcott J,Ishley D,Kennedy W,et al.Clinical investigation of second mesiobuccal canals in endodontically treated and retreated maxillary molars[J].J Endod,2002,28(6):476-477.
[6]Trevor CB,Natban G,Cbarles CL,et al.Efficacy of conebeam computed tomography as a modality to accuratly identify the presence of second mesiobuccal canals in maxillary first and second molars:a pilot study[J].Joural of Endodontics,2010,36(5):867-870.
[7]Jerome Micbetti,Delpbine Maret,Jean Pbilippe Mallet,et al.Validation of cone beam computed tomography as a tool to explore root canal anatomy[J].Joural of Endodontics,2010,36(7):1187-1190.
[8]Jin-Hee Lee,Kee-Deog Kim,Jong-Ki Lee,et al.Mesiobuccal root canal anatomy of Korean Maxillary first and second molars by cone-beam computed tomography[J].Oral Surg Oral Med Oral Pathol Oral Radiol Endod,2011,111(6):785-791.
[9]谢怡汀,罗俊,刘鹏,等.上颌第一磨牙近中颊根第二根管的锥形束CT影像学研究[J].中国医药导报,2012,9(10):121-122.
[10]王岩,裴涛,曾红燕,等.锥形束CT对上颌第一磨牙近中颊根管形态的研究[J].口腔医学研究,2012,28(9):956-958.
[11]高燕,安少锋,凌均棨.离体上颌磨牙近中颊根第二根管出现率的研究[J].中华口腔医学杂志,2005,41(9):521-524.
[12]Zhang R,Yang H,Yu X,et al.Use of CBCT to identify the morphology of maxillary permanent molar teeth in a Chinese subpopulation[J].International Endodontic Joural,2011,44(2):162-169.
[13]Adriana Gurgel Reis,Renata Grazziotin-Soares,Fernando Brando Barletta,et al.Second canal in mesiobuccal root of maxillary molars is correlated with root third and patient age:a cone-beam computed tomography study[J].Joural of endodontics,2013,39(5):588-592.
[14]刘文菲,崔广,宫琳.上颌第一磨牙近中颊根根管系统锥形束CT影像学观察[J].中国实用口腔科杂志,2014,7(8):479-481.
[15]Reis AG,Grazziotin SR,Barletta FB,et al.Second canal in mesiobuccal root of maxillary molars is correlated with root third and patient age:a cone-beam computed tomographic study[J].J Endod,2013,39(5):588-592.
[16]于世凤.牙体组织病理学[M].第5版,北京:人民卫生出版社,2006:41-70.
[17]Plotino G,Tocci L,Grande NM,et al.Symmetry of root and root canal morphology of maxillary and mandibular molars in a white population:a cone-beam computed tomography study in vivo[J].J Endod,2013,39(12):1545-1548.
[18]Llena C,Fernandez J,Ortolani PS,et al.Conebeam computed tomography analysis of root and canal morphology of mandibular premolars in a Spanish population[J].Imaging Sci Dent,2014,44(3):221-227.