基于锥形束CT对下颌前牙根管系统构型的初步研究分析  

Preliminary study and analysis of root canal system configuration of mandibular anterior teeth based on cone-beam CT

作　　者：代艳虹 许颖 陈明雄 祖青 刘晓晶[3] DAI Yan-hong;XU Ying;CHEN Ming-xiong;ZU Qing;LIU Xiao-jing(HainanStomatological Hospital,Dental Center,Haikou Hospital Affiliated to Xiangya Medical College,Haikou 570125,China)

机构地区：[1]海南口腔医院,海南570125 [2]海南口腔医院放射科,海南570125 [3]中南大学湘雅医学院附属海口医院口腔中心,海南570208

出　　处：《中华老年口腔医学杂志》2020年第1期6-10,共5页Chinese Journal of Geriatric Dentistry

基　　金：海南省卫生计生行业科研项目自助课题(项目编号:18A200116)。

摘　　要：目的:应用锥形束CT研究海口地区下颌前牙的根管形态,为牙体牙髓病治疗提供参考依据。方法:选取海南口腔医院影像科CBCT影像资料库中男性、女性各300例,按年龄分6组:12~20、21~30、31~40、41~50、51~60、61~70岁,每组男、女各50例。采用配套软件处理,根据Vertucci分类法观察下颌前牙根管系统的构型。结果:下颌中切牙、侧切牙和尖牙的多根管率分别为11.75%、23.5%和10.41%,下前牙的多根管发生率有统计学差异(P<0.05)。不同年龄组,下颌中切牙,侧切牙多根管发生率,有显著性统计学差异(P<0.001),下颌尖牙多根管发生率无统计学差异(P>0.05)。下前牙多根管时,其根管分叉至解剖性根尖的距离,下颌中切牙为(8.56±2.08)mm,下颌侧切牙为(9.43±1.93)mm,下颌尖牙为(10.60±2.01)mm。不同牙位之间比较,该距离均有统计学差异(P<0.05)。性别间比较,仅下颌中切牙根管分叉至解剖性根尖的距离有统计学差异(P=0.020,P<0.05)。不同年龄组间比较,下颌侧切牙和下颌尖牙的根管分叉至解剖性根尖的距离有统计学差异(P=0.004,P=0.04,P<0.05)。结论:下颌前牙单根多管发生率在10.41%~23.5%区间、多根管发生率和年龄相关性密切。Objective:To study the root canal morphology of mandibular anterior teeth using cone-beam CT(CBCT),in order to provide reference for the treatment of endodontic disease.Methods:CBCT imaging data of 300 male and 300 female patients in the Imaging Department of Hainan Stomatological Hospital were selected and divided into 6 groups according to age:12-20,21-30,31-40,41-50,51-60,and 61-70 years old groups,with 50 males and 50 females in each group.According to Vertucci classification,the root canal system configuration of mandibular anterior teeth was observed.Results:The multiple root canal rates of mandibular central incisors,lateral incisors,and canines were 11.75%,23.5%,and 10.41%,respectively,with statistically significant differences(P<0.05).The incidence of multiple root canals in mandibular central incisors and lateral incisors was significantly different among different age groups(P<0.001),but there was no statistically significant differences in the incidence in mandibular canines among different age groups(P>0.05).When the mandibular anterior teeth had multiple root canals,the distance from the root canal bifurcation to the anatomical apex was(8.56±2.08)mm for the mandibular central incisor,(9.43±1.93)mm for the lateral incisor,and(10.60±2.01)mm for the mandibular canine.The distance showed statistically significant differences between different dental positions(P<0.05).Comparison between males and females showed significant differences in the distance only in mandibular central incisor(P=0.020,P<0.05).The distance of mandibular lateral incisors and mandibular canines was significantly different among different age groups(P=0.004,P=0.04,P<0.05).Conclusion:The incidence of multiple root canals in mandibular anterior teeth ranged from10.41%to 23.5%,which was found closely correlated with age.

关 键 词：下颌前牙 CBCT 多根管 年龄 

分 类 号：R781.05[医药卫生—口腔医学]