Root and canal morphology of maxillary second molars by cone-beam computed tomography in a native Chinese population

被引：34

作者：

Wu, Daming ^{[1
,2
,3
]}

Zhang, Guangdong ^{[1
]}

Liang, Ruizhen ^{[1
]}

Zhou, Guangchao ^{[1
,2
,3
]}

Wu, Younong ^{[1
]}

Sun, Chao ^{[1
,2
,3
]}

Fan, Wei ^{[4
,5
]}

机构：

[1] Nanjing Med Univ, Jiangsu Key Lab Oral Dis, 136 Hanzhong Rd, Nanjing 210029, Jiangsu, Peoples R China

[2] Nanjing Med Univ, Affiliated Hosp Stomatol, Dept Endodont, Nanjing, Jiangsu, Peoples R China

[3] Nanjing Med Univ, Affiliated Hosp Stomatol, Dept Radiol, 136 Hanzhong Rd, Nanjing 210029, Jiangsu, Peoples R China

[4] Wuhan Univ, Sch & Hosp Stomatol, Minist Educ, State Key Lab Breeding Base Basic Sci Stomatol Hu, 237 Luoyu Rd, Wuhan 430079, Peoples R China

[5] Wuhan Univ, Sch & Hosp Stomatol, Minist Educ, Key Lab Oral Biomed, 237 Luoyu Rd, Wuhan 430079, Peoples R China

来源：

JOURNAL OF INTERNATIONAL MEDICAL RESEARCH | 2017年 / 45卷 / 02期

关键词：

Cone-beam computed tomography; maxillary second molar; root canal morphology; root fusion; MESIOBUCCAL ROOT; NUMBER; TEETH; 1ST; CONFIGURATION; RADIOGRAPHY; ANATOMY;

D O I：

10.1177/0300060517699987

中图分类号：

R-3 [医学研究方法]; R3 [基础医学];

学科分类号：

1001 ;

摘要：

Objective To evaluate the root and root canal morphology of the maxillary second molars (MSMs) in a native Chinese population by cone-beam computed tomography. Methods Cone-beam computed tomography images of 2412 MSMs from 1294 Chinese patients were analyzed to determine the number and morphology of the roots, the root canal morphology, the bilateral symmetry, and the correlations of these parameters with sex and age. Results The percentage of fused roots increased with age, while the percentage of fused roots in women was higher than that in men. The percentage of second mesiobuccal (MB2) canals in MSMs with three separate roots was higher in men than women. Patients aged 31 to 40 years showed a higher prevalence of MB2 canals, while those aged 51 years showed the lowest prevalence of MB2 canals among both men and women. There was a significant difference in bilateral symmetry of MSMs between men and women. Conclusion Root fusion of MSMs increased with age, while the root canal morphology was more complex in patients of intermediate ages.

引用

页码：830 / 842

页数：13

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