CBCT study on root and root canal morphology of maxillary second permanent molars in the Guangfu population in the Lingnan area
10.12016/j.issn.2096-1456.2019.06.008
- Author:
LI Qi
1
;
HUANG Shaohong
2
Author Information
1. 1.Stomatological Hospital of Southern Medical University 2.Zhaoqing Medical College
2. Stomatological Hospital of Southern Medical University
- Publication Type:Journal Article
- Keywords:
Maxillary second permanent molar;
Tooth root;
Root canal;
CBCT;
Guangfu population
- From:
Journal of Prevention and Treatment for Stomatological Diseases
2019;27(6):381-386
- CountryChina
- Language:Chinese
-
Abstract:
Objective :To research the root and root canal morphology of maxillary second permanent molars in the Guangfu population of the Lingnan area.
Methods:A total of 1220 maxillary second permanent molars were collected from the 723 CBCT images of the Guangfu population. The root and root canal configurations were observed and counted, and the morphological characteristics and changes were compared and analyzed.
Results: The maxillary second permanent molars included 709 three-root molars, 417 double root molars, 68 single root molars and 26 four-root molars. The difference in the detection rate of each root type in different sex and age groups was not statistically significant (P > 0.05). Root canal morphdogy of maxillary second permanent molars: type Ⅷ (3-3) was the most common type of root canals in single root molars, accounting for 63.25%. Significant differences in the detection rates of canal configurations were noted among the three subtypes of fused root canals in double root molars (P < 0.01). Root canal morphology of the mesiobuccal root of the three-root molars was mainly typeⅠ (1-1), significantly accounting for 78.84%. Significant sex and age differences were noted in the detection rate of type Ⅰ and Ⅳ root canals (P < 0.01). In addition, 75.86% of maxillary second permanent molars had symmetrical roots, and 73.64% of the bilateral teeth had symmetrical roots and canals.
Conclusion:The root and root canal morphology of maxillary second permanent molars in the Guangfu population in the Lingnan area are different compared with other areas at home and abroad.
- Full text:岭南地区广府民系人群上颌第二恒磨牙牙根和根管形态的CBCT研究.pdf
