上颌埋伏前牙牙根长度的CBCT影像学研究  

CBCT imaging study on root length of impacted maxillary anterior teeth

作　　者：康楠 赵姗 李芳芳 张雪莹 李梦 陈彬 KANG Nan;ZHAO Shan;LI Fang-fang;ZHANG Xue-ying;LI Meng;CHEN Bin(School of Stomatology,Bengbu Medical College,Anhui Province,233000,China;Department of Stomatology,Xuzhou Central Hospital,Jiangsu Province,221000,China)

机构地区：[1]蚌埠医学院口腔医学院,安徽蚌埠233000 [2]徐州市中心医院口腔科,江苏徐州221000

出　　处：《中国医疗美容》2022年第7期70-74,共5页China Medical Cosmetology

基　　金：徐州市卫生健康委青年医学科技创新项目(XWKYHT_(2)0210535);蚌埠医学院研究生科研创新计划自然科学项目(Byycx21054)。

摘　　要：目的锥形束CT(Cone Beam Computed Tomography,CBCT)下探讨上颌埋伏前牙与对侧同名牙牙根长度的差异性,为临床诊断、治疗提供思路及依据。方法收集136例上颌埋伏前牙患者的临床资料,根据牙根阻生方向将中切牙分为垂直阻生、水平阻生和倒置阻生三组,分别命名为A1、A2、A3组;尖牙分为垂直阻生与水平阻生两组,为B1、B2组。摄取CBCT影像后,储存DICOM数据,导入invivo dental软件进行埋伏牙及对侧同名牙的牙根长度测量(为减少测量误差,本研究以牙齿切端或牙尖至根尖的长度代表牙根的长度),采用配对样本t检验进行对比研究。结果A1组牙根长度相对对侧同名牙(19.46mm±0.75mm,21.67mm±0.93mm),A2组(19.20mm±0.88mm,21.24mm±0.86mm),A3组(17.71mm±2.36mm,21.09mm±0.64mm),以上差异均有统计学意义(P<0.05),其中A1组和A3组与健侧相比牙根长度缩短更为显著;B1组(22.51mm±0.65mm,22.86mm±0.59mm),B2组(21.72mm±0.83mm,22.03mm±0.87mm),以上差异无统计学意义。结论上颌埋伏阻生尖牙牙根长度一般无明显缩短,多数具有牵引治疗意义;而上颌埋伏中切牙牙根多存在发育不足,无论何种阻生方式牙根长度均有缩短,因此在制定治疗计划时需要充分考虑埋伏牙牙根的长度及形态等因素;CBCT在埋伏牙的诊断治疗中具有重要的意义。Objective To explore the difference in root length between maxillary impacted anterior teeth and contralateral teeth with the same name cone beam CT(Cone Beam Computed Tomography,CBCT),to provide ideas and basis for clinical diagnosis and treatment.Methods The clinical data of 136 patients with maxillary impacted anterior teeth were collected.According to the direction of root impaction,the central incisors were divided into three groups:vertical impaction,horizontal impaction,and inverted impaction,which were named as A1,A2,and A3 groups;canine teeth were divided into three groups.There are two groups of vertical impaction and horizontal impaction,group B1 and B2.After CBCT images were taken,DICOM data were stored and imported into Invivo Dental software to measure the root length of the impacted teeth and the opposalateral teeth with the same name for a comparative study.Results The root lengths of group A1 were relative to the same tooth on the opposite side(19.46mm±0.75mm,21.67mm±0.93mm),group A2(19.20mm±0.88mm,21.24mm±0.86mm),group A3(17.71mm±2.36mm,21.09mm)±0.64mm),the above differences were all statistically significant(P<0.05),among which group A1 and A3 had more significant shortening of root length compared with the healthy side;group B1(22.51mm±0.65mm,22.86mm±0.59mm)),B2 group(21.72mm±0.83mm,22.03mm±0.87mm),the above differences were not statistically significant.Conclusion The root length of maxillary impacted canines is generally not significantly shortened,and most of them are of significance for traction therapy;However,the roots of maxillary impacted central incisors are mostly underdeveloped,and the root length is shortened regardless of the impacted method.The length and shape of the root of the impacted tooth should be fully considered;CBCT is of great significance in the diagnosis and treatment of the impacted tooth.

关 键 词：上颌埋伏牙 中切牙 尖牙 牙根长度 CBCT 

分 类 号：R783.5[医药卫生—口腔医学]