下颌第一恒磨牙髓腔解剖标志与近中中央根管发生率间关系的CBCT研究

doi:10.13591/j.cnki.kqyx.2023.12.008

Abstract

Abstract:

Objective Using cone beam computed tomography(CBCT), this paper discussed the morphology and incidence of middle mesial root canal(MMC) of mandibular first molar(MFM), and evaluated the relationship between the related factors and the incidence of MMC, in order to provide reference for clinical treatment. Methods CBCT imaging data were collected for each patient who met the inclusion criteria. The following were recorded: age, gender, the tooth position, the distance between the mesiobuccal(MB) and mesiolingual(ML) orifices, and the existence of the radix entomolaris. Alldata were analyzed by SPSS20.0 statistical software. Results The incidence of MMC in MFM was 8.12%(145/1 785); among them, fused MMC was the most common with an incidence of only 0.84%(15/1 785). The incidence of MMC in people older than 40 years old was 9.99%(82/821) and 6.54%(63/964) in people under 40 years old, P<0.05. The incidence of MMC in males(7.12%, 67/941) was slightly lower than that in females(9.24%, 78/844), P>0.05.The incidence of MMC in left MFM(8.34%, 76/911) was slightly higher than that in right side(7.89%, 69/874), P<0.05.The incidence of MMC was slightly higher in the radix entomolaris group(8.85%, 41/463) than in the non-radix entomolaris group(7.87%, 104/1 322), P>0.05.The distance between MB-ML root orifices was (2.99±0.44)mm in non-MMC group, (3.39±0.49)mm in MMC group, P<0.05. Conclusion The anatomical markers of the pulp chamber of mandibular first molars can help to predict the presence of MMC. Understanding these anatomical landmarks can help physicians reduce missed MMC and prevent excessive cutting of dental structures during clinical practice.

Key words: middle mesial canal, mandibular first molar, CBCT, root canal classification

CLC Number:

R816.98

HAN Yuhuan,WU Wanchao,WANG Peiru,LI Lijie. The association between the anatomic landmarks of the pulp chamber and the prevalence of middle mesial canals in mandibular first molars: A cone-beam computed tomography study[J]. Stomatology, 2023, 43(12): 1096-1100.

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References 20

[1]	葛立宏. 儿童口腔医学[M]. 4版. 北京: 人民卫生出版社, 2012.
[2]	刘玮佳, 孙琼. 下颌第一磨牙近中及远中中央根管的研究现状与展望[J]. 安徽医学, 2021, 42(4):460-463.
[3]	Karabucak B, Bunes A, Chehoud C, et al. Prevalence of apical periodontitis in endodontically treated premolars and molars with untreated canal: A cone-beam computed tomography study[J]. J Endod, 2016, 42(4):538-541. doi: 10.1016/j.joen.2015.12.026 pmid: 26873567
[4]	Vertucci FJ, Williams RG. Root canal anatomy of the mandibular first molar[J]. J N J Dent Assoc, 1974, 45: 27. pmid: 4523925
[5]	许骏杨, 陈明, 杨叶青, 等. 锥形束CT分析下颌第一磨牙近中第三根管弯曲度[J]. 南方医科大学学报, 2018, 38(7):824-829.
[6]	Special Committee to Revise the Joint AAE/AAOMR Position Statement on use of CBCT in Endodontics. AAE and AAOMR joint position statement: Use of cone beam computed tomography in endodontics 2015 update[J]. Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology, 2015, 120(4):508-512. doi: 10.1016/j.oooo.2015.07.033
[7]	Akbarzadeh N, Aminoshariae A, Khalighinejad N, et al. The association between the anatomic landmarks of the pulp chamber floor and the prevalence of middle mesial canals in mandibular first molars: An in vivo analysis[J]. J Endod, 2017, 43(11):1797-1801. doi: S0099-2399(17)30855-5 pmid: 28864218
[8]	Vertucci FJ. Root canal anatomy of the human permanent teeth[J]. OralSurg Oral Med Oral Pathol, 1984, 58(5):589-599.
[9]	张博森, 刘敏, 吴家媛. 贵州地区人下颌第一恒磨牙近中中央根管充填率调查及遗漏原因分析[J]. 临床口腔医学杂志, 2018, 34(7):412-415.
[10]	杨丽丽, 张岩, 赵世俊, 等. 锥形束CT结合显微超声技术在下颌第一磨牙近中三根管治疗中的应用研究[J]. 华西口腔医学杂志, 2017, 35(4):384-388.
[11]	Yang YQ, Wu BL, Zeng JK, et al. Classification and morphology of middle mesial canals of mandibular first molars in a southern Chinese subpopulation: A cone-beam computed tomographic study[J]. BMC Oral Health, 2020, 20(1):358. doi: 10.1186/s12903-020-01339-5 pmid: 33302951
[12]	Nosrat A, Deschenes RJ, Tordik PA, et al. Middle mesial canals in mandibular molars: Incidence andRelated factors[J]. J Endod, 2015, 41(1):28-32. doi: 10.1016/j.joen.2014.08.004 pmid: 25266468
[13]	樊明文. 牙体牙髓病学[M]. 4版. 北京: 人民卫生出版社, 2012.
[14]	Fogel HM, Peikoff MD, Christie WH. Canal configuration in the mesiobuccal root of the maxillary first molar: A clinical study[J]. J Endod, 1994, 20(3):135-137. doi: 10.1016/S0099-2399(06)80059-2
[15]	Sherwani OK, Kumar A, Tewari R, et al. Frequency of middle mesial canals in mandibular first molars in North Indian population-an in vivo study[J]. Saudi Endod J, 2016, 6(2):66. doi: 10.4103/1658-5984.180618
[16]	王晨, 李彦青, 王汝卉, 等. 应用CBCT对下颌第一恒磨牙近中中央根管发生率及其相关因素的研究[J]. 实用口腔医学杂志, 2020, 36(5):809-813.
[17]	Perlea P, Temelcea AN, Nistor CC, et al. Incidence of the middle mesial canals in mandibular permanent molars in a Romanian population by cone-beam computed tomography[J]. Rev Roum De Morphol Embryol, 2019, 60(4):1285-1290.
[18]	Qiao X, Zhu HL, Yan YJ, et al. Prevalence of middle mesial canal and radix entomolaris of mandibular first permanent molars in a western Chinese population: An in vivo cone-beam computed tomographic study[J]. BMC Oral Health, 2020, 20(1):224. doi: 10.1186/s12903-020-01218-z pmid: 32807171
[19]	Weinberg EM, Pereda AE, Khurana S, et al. Incidence of middle mesial canals based on distance between mesial canal orifices in mandibular molars: A clinical and cone-beam computed tomographic analysis[J]. J Endod, 2020, 46(1):40-43. doi: S0099-2399(19)30787-3 pmid: 31843127
[20]	陆亚倩, 杨晨露, 刘亚文, 等. 下颌第一磨牙根管形态的CBCT研究[J]. 口腔医学, 2020, 40(5):443-447.

The association between the anatomic landmarks of the pulp chamber and the prevalence of middle mesial canals in mandibular first molars: A cone-beam computed tomography study

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