不同垂直骨面型安氏Ⅱ^(1)类错[牙合]畸形成人患者拔牙矫治前后牙根吸收情况比较  

Assessment of Teeth Length Among Adult AngleⅡ^(1) Patients with Different Divergent Patterns after Orthodontic Treatment

作　　者：刘思 宋丽娟[1] LIU Si;SONG Lijuan(Department of Orthodontics,Suzhou Stomatological Hospital,Suzhou 215008,Jiangsu,China)

机构地区：[1]苏州口腔医院正畸一科,江苏苏州215008

出　　处：《中国美容医学》2024年第2期123-127,共5页Chinese Journal of Aesthetic Medicine

摘　　要：目的:通过测量不同垂直骨面型的安氏Ⅱ^(1)类错[牙合]成人患者正畸治疗前后的牙体长度,分析其矫治前后牙根吸收的差异以及切牙内收量与牙根吸收的相关性。方法:从南昌大学附属口腔医院选择60例拔牙病例,按面角不同分成三组,将其治疗前后的CBCT数据分别导入Dolphin-Imaging 11.95软件,测量双侧上下中切牙、尖牙和第一磨牙牙体长度以及上下切牙切缘和根尖的矢状向移动量,所得数据进行统计学分析。结果:治疗前左右两侧同名牙牙体长度无差异,治疗后三组牙根长度均减小(P<0.01),上颌中切牙牙体长度高角组减小的最大,依次为均角和低角组(P<0.01)。上下切牙切缘和根尖内收量三组间差异无统计学意义(P>0.05),左侧上颌中切牙根尖内收量与牙体长度的减少量成正相关,三组相关性分别为低角组0.663、高角组0.618、均角组0.635(均P<0.01)。结论:不同垂直骨面型成人安氏Ⅱ^(1)类错[牙合]患者拔牙矫治后均有不同程度的牙根吸收。Objective The difference of root resorption before and after orthodontic treatment and the correlation between incisor sagittal movement and root resorption were analyzed by measuring the tooth length of AngleⅡ^(1) patients with different divergent patterns in adult.Methods A total of 60 extraction cases were selected from the Affiliated Stomatological Hospital of Nanchang University,and divided into three groups according to different face angles.The CBCT data before and after treatment were imported into dolphin-imaging 11.95 software,then corrected the head position and selected measurement planes.Respectively,to measure the length of the upper and lower incisors,the canine and the first molar,and the sagittal movement of the upper and lower incisors.The obtained data were analyzed statistically.Results There was no difference in the length of the corresponding teeth on the left and right sides before treatment.After treatment,the root length of the three groups decreased(P<0.01),and the high-angle group decreased mostly.There was no difference between the three groups in incisor margin and apical adversarial amount(P>0.05).There was a positive correlation between the movement of the left central incisor and the reduction of tooth length,and the correlation was 0.663 in the low-angle group,0.618 in the high-angle group and 0.635 in the mean-angle group(all P<0.01).Conclusion There are teeth roots resorption in different degrees after extraction treatment in different divergent patterns.

关 键 词：安氏Ⅱ^(1)类错[牙合]畸形 骨面型 牙根吸收 拔牙矫治 

分 类 号：R783.5[医药卫生—口腔医学]