切换至 "中华医学电子期刊资源库"

中华口腔医学研究杂志(电子版) ›› 2020, Vol. 14 ›› Issue (04) : 228 -234. doi: 10.3877/cma.j.issn.1674-1366.2020.04.005

所属专题: 文献

临床研究

云南地区人群下颌第一前磨牙、第二前磨牙和第一恒磨牙根管解剖形态的锥形束CT分析
尹淑慧1, 黄日鸿1, 凌华1, 尹海东1, 杨浩然1, 尹大海2, 霍丽珺3,()   
  1. 1. 昆明医科大学口腔医学院 650500
    2. 昆明医科大学附属口腔医院影像科 650000
    3. 昆明医科大学附属口腔医院牙体牙髓病科 650000
  • 收稿日期:2020-02-03 出版日期:2020-08-01
  • 通信作者: 霍丽珺

Use of cone-beam computed tomography to evaluate root canal morphology of mandibular first premolar, second premolar and first permanent molar in Yunnan individual

Shuhui Yin1, Jihung Huang1, Hua Ling1, Haidong Yin1, Haoran Yang1, Dahai Yin2, Lijun Huo3,()   

  1. 1. Department of Stomatology, Kunming Medical University, Kunming 650500, China
    2. Department of Radiology, The Affiliated Stomatological Hospital, Kunming Medical University, Kunming 650000, China
    3. Department of Endodontics, The Affiliated StomatologicalHospital, Kunming Medical University, Kunming 650000, China
  • Received:2020-02-03 Published:2020-08-01
  • Corresponding author: Lijun Huo
  • About author:
    Corresponding author: Huo Lijun, Email:
引用本文:

尹淑慧, 黄日鸿, 凌华, 尹海东, 杨浩然, 尹大海, 霍丽珺. 云南地区人群下颌第一前磨牙、第二前磨牙和第一恒磨牙根管解剖形态的锥形束CT分析[J]. 中华口腔医学研究杂志(电子版), 2020, 14(04): 228-234.

Shuhui Yin, Jihung Huang, Hua Ling, Haidong Yin, Haoran Yang, Dahai Yin, Lijun Huo. Use of cone-beam computed tomography to evaluate root canal morphology of mandibular first premolar, second premolar and first permanent molar in Yunnan individual[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2020, 14(04): 228-234.

目的

利用锥形束CT(CBCT)分析云南地区人群下颌第一前磨牙、第二前磨牙和第一恒磨牙根管解剖形态,为临床根管治疗提供理论依据和参考。

方法

根据年龄(20 ~ 29岁、30 ~ 39岁、40 ~ 49岁、50 ~ 59岁)分层抽取2017年1月至2018年1月在昆明医科大学附属口腔医院放射科进行CBCT检查的患者的数据资料各100例。400例患者中有324例CBCT数据资料符合标准,其中男166例、女158例,年龄20 ~ 29岁82例、30 ~ 39岁82例、40 ~ 49岁82例、50 ~ 59岁78例。统计分析下颌第一前磨牙、第二前磨牙和第一恒磨牙的根管数目、根管长度和根管弯曲度,并对不同年龄段根管长度、下颌第一磨牙牙尖到根分叉距离及根尖孔到下颌神经管距离数据进行单因素方差分析,对不同性别下颌第一磨牙牙尖到根分叉距离及根尖孔到下颌神经管距离数据进行独立样本t检验。

结果

通过对324例患者CBCT影像资料的分析得出,下颌前磨牙基本为单根管(647/648颗),仅见1例右下第一前磨牙双根管。下颌前磨牙弯曲度以一级弯曲(5° ~ 10°)和二级弯曲(10° ~ 25°)为主,前磨牙根管长度大多处于正常范围(15 ~ 25 mm),下颌第一恒磨牙弯曲度近远中根均以二级弯曲(10° ~ 25°)为主,下颌第一恒磨牙牙尖到根分叉的距离随年龄增长变短(F左侧=11.16,P左侧<0.001;F右侧=11.51,P右侧<0.001),男女性别差异无统计学意义(t左侧=1.31,P左侧=0.19;t右侧=0.51,P右侧=0.61);下颌第一恒磨牙根尖孔到下颌神经管的距离随年龄增长变长(F左侧=7.03,P左侧<0.001;F右侧=12.25,P右侧<0.001),男女性别差异无统计学意义(t左侧=-0.64,P左侧=0.52;t右侧=-0.11,P右侧=0.91)。

结论

本研究中云南地区人群下颌前磨牙根管解剖形态相对简单;下颌第一恒磨牙根管解剖形态复杂,云南地区人群下颌前磨牙、第一恒磨牙根管解剖系统与其他地区相比有所差异,但增龄性变化无区别,CBCT可为临床根管治疗提供依据。

Objective

To observe and analyze the root canal anatomy of mandibular first premolar, second premolar and first permanent molar in Yunnan province by using cone-beam computed tomography (CBCT) , and to provide theoretical basis and reference for clinical root canal therapy.

Methods

400 patients were selected by stratified sampling based on the age (100 cases aged 20-29, 100 cases aged 30-39, 100 cases aged 40-49, and 100 cases aged 50-59) from January 2017 to January 2018 at the Department of radiology of Yunnan stomatological hospital. CBCT data of 324 patients met the standard, including 166 males and 158 females, from which 82 cases aged 20-29, 82 cases aged 30-39, 82 cases aged 40-49, and 78 cases aged 50-59. The number, length and curvature of root canals of mandibular first premolar, second premolar and first permanent molar was analyzed. The data of root canal length, the distance from the dental cusp of mandibular first permanent molar to the root bifurcation and the distance from the apical foramen to the mandibular cannal of different age were analysed by single factor analysis of variance. The data of the distance from the dental cusp of mandibular first permanent molar to the root bifurcation and the distance from the apical foramen to the mandibular cannal of different gender were analysed by independent sample t test.

Results

CBCT images of 324 patients showed that the mandibular premolars were basically single root canal (647/648) , and only one case of right mandibular first premolar with 2 root canals. The curvature of mandibular premolars were mainly level Ⅰ (5°, 10°) and level Ⅱ (10°, 25°) . The length of root canal of mandibular first permanent molars were mostly in the normal range (15 ~ 25 mm) . The curvature of mandibular first permanent molars were mainly level Ⅱ (10°, 25°) . The distance from the dental cusp of mandibular first molar to the root bifurcation became shorter and shorter with age (Fleft = 11.16, Pleft<0.001; Fright = 11.51, Pright<0.001) , there was no statistically significant difference between male and female (tleft = 1.31, Pleft = 0.19; tright = 0.51, Pright = 0.61) . The distance from the apical foramen of mandibular first molar to the mandibular canal increased with age (Fleft = 7.03, Pleft<0.001; Fright = 12.25, Pright<0.001) . There was no statistically significant difference between male and female (tleft = -0.64, Pleft = 0.52; tright = -0.11, Pright = 0.91) .

Conclusions

The root canal variation of mandibular first premolar were less complex than others, the root canal anatomy of mandibular first permanent molar were complex. Compared with other regions, the root canal anatomical system of the first permanent molar and premolars of the mandibular in Yunnan is different, but there is no difference in aging. CBCT can provide an evidence for root canal therapy.

图1 CBCT测量工具Ez3DPlus测量根管长度示意图 A:矢状面上显示2个弯曲;B:冠状面上显示1个弯曲;C:选择矢状面最为弯曲面;+代表弯曲处
图2 改良Schneider法测量根管弯曲度示意图 a:根管口;b:根管弯曲起始点;c:根尖孔;α:ab延长线与bc连线所成的锐角即为弯曲度
图3 根尖至根分叉距离测量示意图 a:最低两牙尖连线中点;b:中点到根分叉距离
图4 根尖至下颌神经管距离测量示意图 a:根尖孔;b:距离;c:下颌神经管
表1 不同牙位根管长度及分型结果[例(%)]
表2 不同牙位根管弯曲度发生率[例(%)]
表3 下颌第一恒磨牙不同根管类型发生率[例(%)]
图5 右下第一前磨牙双根管
表4 不同年龄段下颌前磨牙和第一恒磨牙根管长度平均值(mm, ± s
表5 各年龄段下颌第一恒磨牙牙尖到根分叉处距离(mm, ± s
表6 男女下颌第一恒磨牙牙尖到根分叉处距离比较(mm, ± s
表7 各年龄段下颌第一恒磨牙根尖孔到下颌神经管的距离(mm, ± s
表8 男女性下颌第一恒磨牙根尖孔到下颌神经管的距离比较(mm, ± s
[1]
Parirokh M,Abbott PV,Yosefi MH,et al. Presence of two distal and one mesial root canals in mandibular second molars:report of four cases[J]. Iranian Endod J,2014,9(3):229-232.
[2]
Akhlaghi NM,Khalilak Z,Vatanpour M,et al. Root canal anatomy and morphology of mandibular first molars in a selected Iranian population:An in vtro study[J]. Iranian Endod J,2017,12(1):87-91. DOI:10.22037/iej.2017.18.
[3]
Schäfer E,Breuer D,Janzen S. The prevalence of three-rooted mandibular permanent first molars in a German population[J]. J Endod,2009,35(2):202-205. DOI:10.1016/j.joen.2008.11.010.
[4]
CalbersonFL,De Moor RJ,Deroose CA. The radix entomolaris and paramolaris:clinical approach in endodontics[J]. J Endod,2007,33(1):58-63. DOI:10.1016/j.joen.2006.05.007.
[5]
Cotton TP,Geisler TM,Holden DT,et al. Endodontic applications of cone-beam volumetric tomography[J]. J Endod,2007,33(9):1121-1132. DOI:10.1016/j.joen.2007.06.011.
[6]
李卫,吴剑花,税艳青,等.云南地区人群下颌第一恒磨牙根管形态的锥形束CT分析[J].昆明医科大学学报,2017,38(11): 92-96. DOI:10.3969/j.issn.1003-4706.2017.11.021
[7]
Trope M,Elfenbein L,Tronstad L. Mandibular premolars with more than one root canal in different race groups[J]. J Endod,1986,12(8):343-345. DOI:10.1016/S0099-2399(86)80035-8.
[8]
喻洁,朱虹倩,刘兴容.泸州地区下颌第一前磨牙根管系统锥形束CT研究[J].川北医学院学报,2015,30(2):231-233,265. DOI:10.3969/j.issn.1005-3697.2015.02.25.
[9]
廖骞,韩俊力,徐晓.下颌第一前磨牙根管的形态分析[J].上海口腔医学,2011,20(5):517-521.
[10]
李志强,谭劲.经口腔锥形束CT下治疗右侧下颌第一前磨牙4根管1例[J].现代医药卫生,2018,34(8):1277-1278. DOI:10.3969/j.issn.1009-5519.2018.08.58.
[11]
吴迪,王玲香,张进.下颌第一前磨牙根管形态的影像学分析[J].牙体牙髓牙周病学杂志,2017,27(11):661-663,672. DOI:10.15956/j.cnki.chin.j.conserv.dent.2017.011.009.
[12]
慈博雯,吴补领,麻丹丹,等.应用锥形束CT对华南地区924颗下颌第1磨牙的根管形态学研究[J].中国临床解剖学杂志,2017,35(3):261-265. DOI:10.13418/j.issn.1001-165x.2017.03.006.
[13]
马海峰,耿海霞,钱君荣,等.锥形束CT图像经Planmeca Romexis软件三维影像重建鲁西南地区汉族人下颌第一恒磨牙牙根及根管的变异[J].中国组织工程研究,2017,21(16):2521-2526. DOI:10.3969/j.issn.2095-4344.2017.16.011.
[14]
朱成.山东人下颌第二恒磨牙牙根及根管类型的CBCT研究[C].青岛:青岛大学,2017:1-87.
[15]
王飞,罗俊,李月恒,等.运用CBCT对下颌阻生第三磨牙与下颌神经管位置关系的研究[J].华中科技大学学报(医学版),2016,45(1):22-27. DOI:10.3870/j.issn.1672-0741.2016.01.004.
[16]
王朝.锥形束CT对下颌神经管及其相关解剖结构测量研究[D].广州:南方医科大学,2014:1-73. DOI:10.7666/d.Y2617624.
[1] 周炼, 周航, 张东强, 徐海涛. 改良舌弓治疗下颌第一磨牙异位萌出的临床应用[J]. 中华口腔医学研究杂志(电子版), 2022, 16(02): 94-99.
[2] 郭敏, 麦穗, 卢嘉蕊, 韦曦. 橡皮障隔离下显微根管治疗教学模具的制备与应用[J]. 中华口腔医学研究杂志(电子版), 2021, 15(04): 241-244.
[3] 高楠, 林志勇. 右侧上颌第一磨牙腭侧双根管1例[J]. 中华口腔医学研究杂志(电子版), 2019, 13(05): 317-319.
[4] 辛蔚妮, 曾博, 许青峰, 邹波, 马辉彬. 视觉模拟评分法评估根管治疗术后疼痛程度及疼痛相关因素分析[J]. 中华口腔医学研究杂志(电子版), 2019, 13(05): 278-283.
[5] 赵莹, 林雪峰. 中重度慢性牙周炎上颌中切牙区解剖形态的锥形束CT测量分析[J]. 中华口腔医学研究杂志(电子版), 2018, 12(06): 369-374.
[6] 许志杰, 杨蕊, 杜国勇, 何奋军, 余丽佳, 吴纪楠. 两种微动力系统在上颌埋伏多生牙拔除术中应用的比较[J]. 中华口腔医学研究杂志(电子版), 2018, 12(04): 221-226.
[7] 封伟, 耿进友, 孙园园, 耿海霞, 薛敏. 锥形束CT辅助美学区种植评价唇侧骨量的应用研究[J]. 中华口腔医学研究杂志(电子版), 2015, 09(04): 313-317.
[8] 文晓静, 戴红娅, 周军, 罗灿. TiGRT IVS和XVI图像引导系统在肺癌调强放疗中对比分析[J]. 中华肺部疾病杂志(电子版), 2021, 14(05): 655-658.
[9] 代天国, 邱银秀, 刘应凯, 冉红兵. 口腔颌面部锥形束CT结合微创拔牙技术在下颌阻生第三磨牙拔除中的临床应用[J]. 中华临床医师杂志(电子版), 2020, 14(04): 272-279.
阅读次数
全文


摘要