摘要
目的采用锥形束CT研究下颌切牙根管解剖特点，及其与性别、年龄、牙位的关系。方法使用锥形束CT观察316例共1148颗下颌切牙，获得其断层图像后进行三维重建，通过计算机图像观察其根管数目及根管类型。记录被检查者的性别、年龄和牙位。计算下颌切牙双根管检出率，统计根管类型，分析根管解剖特点与性别、年龄、牙位的关系。结果下颌切牙双根管检出率为27．5％，其双根管类型以Vertucci分类的Ⅲ型最多，占14．1％。双根管在各年龄段间的分布差异有统计学意义（P〈0．05），20～29岁和30～39岁两个年龄段的双根管检出率较高，分别为36．8％和36．5％。下颌切牙双根管的检出率女性高于男性。侧切牙双根管的检出率高于中切牙，结论下颌切牙双根管检出率较高，锥形束CT在诊断双根管方面具有重要作用。
Objective Using CBCT to evaluate the prevalence of the numher of root canals in mandibular permanent incisors, and discussion the relationship between the prevalence anti gender, age, tooth position. Methods CBCT ima- ges of 1148 mandibular incisors had previously been obtained and the 3D images were reconstructed. The information such as gender, age, tooth position of the subjects and type of root canal was recorded. Results 27.5% of 1 148 man- dibular permanent incisors had two root canals. The majority of which had type Ⅲ（ 14.1% ） canal system. The patients between 20 and 40 years of age significantly had a higher prevalence of two canals than the other age groups. There was statistical difference between these groups （ P 〈 0.05 ）. Women had more mandibular incisor with two canals than men. The incidence of two canals was more in the lateral incisors than in the central incisors. Conclusion The prevalence of the two canals in mandibular incisors is high, CBCT scanning proved effective in diagnosis of two canals in mandibular in- eisors.
出处
《广东牙病防治》
2013年第12期634-637,共4页
Journal of Dental Prevention and Treatment
关键词
根管解剖
下颌切牙
锥形束CT
Canal anatomy
Mandibular incisors
Cone beam computed tomography
