儿童和青少年上颌前牙区埋伏多生牙对邻近中切牙发育萌出影响的CBCT影像学分析  

Effects of Impacted Supernumerary Teeth on Adjacent Maxillary Central Incisors in Children and Adolescent Based on CBCT

作　　者：陈涛 马晓威 姚琴 史亚伟[1] 王东苗[1,2,3] 程杰 CHEN Tao;MA Xiaowei;YAO Qin;SHI Yawei;WANG Dongmiao;CHENG Jie(Department of Oral and Maxillofacial Surgery,Affiliated Stomatological Hospital of Nanjing Medical University,Nanjing 210029,China;Jiangsu Province Key Laboratory of Oral Disease,Nanjing Medical University,Nanjing 210029,China;Jiangsu Province Engineering Research Center of Stomatological Translational Medicine,Nanjing 210029,China)

机构地区：[1]南京医科大学附属口腔医院口腔颌面外科,江苏南京210029 [2]南京医科大学口腔疾病研究江苏省重点实验室,江苏南京210029 [3]江苏省口腔转化医学工程研究中心,江苏南京210029

出　　处：《口腔医学研究》2023年第6期500-504,共5页Journal of Oral Science Research

基　　金：江苏省卫健委科研项目(编号:M2020021);中国牙病防治基金会项目(编号:A2021-030);江苏省科教能力提升工程-江苏省研究型医院建设单位(项目编号:YJXYYJSDW4);江苏省医学创新中心(项目编号:CXZX202227)。

摘　　要：目的:分析儿童和青少年上颌前牙区埋伏多生牙对邻近中切牙生长发育及萌出状态的影响。方法:回顾性收集上颌中切牙区埋伏多生牙的儿童和青少年患者,利用CBCT影像结合InVivo 5软件测量并比较埋伏多生牙累及侧(病例组)与正常侧(对照组)上颌中切牙牙长、冠长、根长、与腭平面的角度、与正中矢状面的角度及与牙合平面高度的差异。结果:共201例患者符合纳入标准。分析比较发现:(1)病例组中切牙冠长(11.00±1.09)mm,对照组中切牙冠长(11.09±0.92)mm,组间差异无统计学意义(P>0.05);(2)病例组中切牙根长(9.08±2.83)mm、牙长(20.08±2.92)mm、冠根比1.39±0.65;对照组中切牙根长(9.75±2.82)mm、牙长(20.85±2.72)mm、冠根比1.28±0.58,组间差异具有统计学意义(P<0.05);(3)病例组中切牙长轴与腭平面交角(112.7±12.8)°,对照组中切牙长轴与腭平面交角(117.3±11.3)°,组间差异有统计学意义(P<0.05);(4)病例组中切牙与正中矢状面交角(7.4±18.3)°,对照组中切牙与正中矢状面交角(7.3±11.4)°,组间差异无统计学意义(P>0.05);(5)两组上颌中切牙牙冠萌出高度差2.01 mm,差异有统计学意义(P<0.05)。结论:上颌中切牙区埋伏多生牙阻碍邻近中切牙的正常发育及萌出。Objective:To explore the effect of impacted supernumerary teeth in the anterior region on the development and eruption of adjacent maxillary central incisors in children and adolescents.Methods:This study retrospectively collected patients diagnosed with impacted supernumerary teeth in the maxillary central incisor region.To measure and compare the maxillary incisor tooth length,crown length,root length,angle with palatal plane,angle with median sagittal plane and height difference with occlusal plane of the affected maxillary central incisors and contralateral homonymous,CBCT images were obtained and analyzed using InVivo5 software,and the impacted side(case group)was compared to the normal side(control group).Results:Among the 201 patients included in the study,(1)no statistically significant difference in maxillary incisor crown length was found between the case group(11.00±1.09)mm and the control group(11.09±0.92)mm(P>0.05).(2)significant differences were found between the case group and the control group in root length(9.08±2.83)mm vs(9.75±2.82)mm,tooth length(20.08±2.92)mm vs(20.85±2.72)mm,and crown-root ratio 1.39±0.65 vs 1.28±0.58(P<0.05).(3)the angle between the long axis of the incisor and the palatal plane was(112.7±12.8)°vs(117.3±11.3)°in the case and control groups respectively,with a statistically significant difference(P<0.05).(4)there was no statistically significant difference in the angle between the long axis of the tooth and the mid-sagittal plane,which was(7.4±18.3)°vs(7.3±11.4)°in the case and control groups respectively(P>0.05).(5)a statistically significant difference was observed between the two groups in the height difference of the maxillary incisor crown eruption,with a value of 2.01 mm(P<0.05).Conclusion:The presence of impacted supernumerary teeth in maxillary central incisor area affects normal development and eruption of adjacent maxillary central incisors.

关 键 词：多生牙 上颌中切牙 锥形束CT 

分 类 号：R783.5[医药卫生—口腔医学]