Research on the clinical value of CBCT in the extraction strategy of impacted mandibular third molar in different genders
10.3969/j.issn.1673-9701.2025.16.007
- VernacularTitle:基于CBCT对不同性别下颌阻生第三磨牙拔除策略的临床价值研究
- Author:
Jiajie LIU
1
;
Xiaoling SONG
;
Jiani TANG
;
Xiangyong MENG
Author Information
1. 湖州师范学院医学院,浙江湖州 313000
- Publication Type:Journal Article
- Keywords:
Cone beam computed tomography;
Impacted mandibular third molar;
Morphological characteristics;
Extraction strategy
- From:
China Modern Doctor
2025;63(16):26-30
- CountryChina
- Language:Chinese
-
Abstract:
Objective Cone beam computed tomograph(CBCT)was used to investigate the factors influencing the difficulty of extracting impacted mandibular third molar(IMTM).Methods The CBCT image data of 441 teeth of 260 patients who visited Affiliated Stomatological Hospital of Huzhou University from March 2023 to June 2024 were selected.Record the number of roots,impacted status,direction of impacted teeth,depth of impaction,and positional relationship with mandibular nerve canal of impacted teeth,and classify them according to different genders.Statistically analyze the differences between different genders.Results Among the 441 IMTM teeth,there were 82 single root,333 double roots,24 triple roots and 2 quadruple roots.Impacted status:179 inclined impaction,129 vertical impaction,128 horizontal impaction,5 inverted impaction.Direction of impacted teeth:133 mesioangular impaction,7 buccoangular impaction,29 linguoangular impaction,10 distoangular impaction.Depth of impaction:285 high impaction,124 medium impaction,32 low impaction.The positional relationship with mandibular nerve canal:there are 159 teeth with roots located on the lingual side of mandibular nerve canal,140 teeth with roots entering mandibular nerve canal,22 teeth with roots on the buccal side of mandibular nerve canal,117 teeth with roots above mandibular nerve canal,1 tooth with roots between them,and 2 special teeth.There were statistically significant differences in the number of roots,impacted status,and direction of impacted teeth among patients of different genders(P＜0.05),however there were no statistically significant differences in depth of impaction and positional relationship with mandibular nerve canal(P＞0.05).Conclusion There are differences in morphological characteristics of IMTM between different genders,which leads to different extraction difficulties.CBCT can precisely observe the morphological characteristics of IMTM from a three-dimensional perspective,providing guidance for the clinical formulation of extraction strategies for impacted teeth.
