埋伏上颌中切牙牵引萌出前、后牙根形态的变化

上海口腔医学 ›› 2016, Vol. 25 ›› Issue (1): 72-76.

埋伏上颌中切牙牵引萌出前、后牙根形态的变化

董宏伟¹，² ，许世梃¹，²，俞殷隽¹，梁勤¹，²

1.石四箴口腔医疗中心
2. 同济大学儿童口腔医学研究所，上海 200032

收稿日期:2015-03-13 修回日期:2015-05-28 出版日期:2016-02-25 发布日期:2016-03-09
通讯作者: 董宏伟，E-mail:drdenty@sohu.com
作者简介:董宏伟（1976-），男，硕士研究生，副主任医师

Root shape changes of impacted upper central incisor before and after orthodontic traction

DONG Hong-wei¹,², XU Shi-ting¹,², YU Yin-jun¹, LIANG Qin¹,².

1.Shisizhen Dental Clinic；
2. Research Institute of Pediatric Dentistry, Tongji University. Shanghai 200032, China

Received:2015-03-13 Revised:2015-05-28 Online:2016-02-25 Published:2016-03-09

摘要/Abstract

摘要： 目的： 应用锥形束CT（cone-beam CT,CBCT）观察埋伏上颌中切牙牵引萌出前、后牙根形态的三维变化，探讨埋伏上颌中切牙牵引萌出的时机。方法： 对10例经曲面体层片确诊的上颌埋伏中切牙拍摄CBCT进行精确定位，进行外科开窗和正畸牵引萌出，排齐牙列，治疗后拍摄CBCT图像对牵引效果和牙根发育进行评估。结果： 10例埋伏上颌中切牙均成功牵引到位，牵引前牙根已发育完成的4例埋伏牙牙根形态未发生变化；而牵引前牙根未发育完成的6例埋伏牙在治疗过程中牙根继续发育，弯曲度和长度均有改善。结论： 埋伏上颌中切牙在牙根尚未发育完成前进行牵引萌出可以收到较好的治疗效果。

关键词: 埋伏上颌中切牙, 正畸牵引, 锥形束CT

Abstract: PURPOSE: Changes of root shape of impacted upper central incisor before and after orthodontic traction were observed with dental cone-beam CT(CBCT), the timing for traction of impacted upper central incisor was investigated. METHODS： Ten impacted maxillary central incisors were diagnosed via panoramic radiograph. CBCT images were taken preoperatively for accurate localization. Following combined treatment of dental surgery and orthodontic traction, ten impacted maxillary central incisors were guided out and aligned well. Final treatment results and the root development status were evaluated via CBCT. RESULTS: Ten impacted maxillary central incisors were tracted to normal position. CBCT images before and after treatment showed that the root of impacted incisors with completed root apex had no change in shape, while the root of impacted incisors with uncompleted root apex developed continually with obviously improved shape and length. CONCLUSIONS: Optimistic results can be achieved if the traction of impacted upper central incisor is carried out before root development completed.

Key words: Impacted maxillary central incisor, Orthodontic traction, Cone-beam CT

中图分类号:

R788

董宏伟，,许世梃,俞殷隽，梁勤，. 埋伏上颌中切牙牵引萌出前、后牙根形态的变化[J]. 上海口腔医学, 2016, 25(1): 72-76.

DONG Hong-wei, LIANG Qin,².. Root shape changes of impacted upper central incisor before and after orthodontic traction[J]. Shanghai Journal of Stomatology, 2016, 25(1): 72-76.

[1]	李苏娜, 宋文尚, 刘子略, 杜月茹, 蔡世新. 义齿咬合板联合综合物理疗法对颞下颌关节盘不可复性前移位的疗效评价[J]. 上海口腔医学, 2024, 33(3): 273-278.
[2]	彭源浩, 庄昕仪, 喻婷, 吕冬梅, 温秀杰, 程钎. 青少年颧牙槽嵴区皮质骨厚度的锥形束CT测量及其与颈椎骨龄的相关性研究[J]. 上海口腔医学, 2023, 32(6): 623-629.
[3]	黄仲敏, 张赟, 李小兵. 替牙列早期上颌慢速扩弓对上颌中段牙及牙槽嵴的影响[J]. 上海口腔医学, 2023, 32(5): 501-507.
[4]	李贵宏, 谢思静, 林梓桐, 张婷, 汤旭娜, 胡勤刚. 下颌第二磨牙C形根管治疗前后根管壁厚度测量分析[J]. 上海口腔医学, 2023, 32(4): 395-400.
[5]	王文丽, 傅亚婷, 刘华, 马潇. 上颌前牙美学区牙龈三维形态的锥形束CT测量分析[J]. 上海口腔医学, 2023, 32(2): 177-182.
[6]	张薇, 陈威, 陈志方. 可调式活动牵引器治疗上颌唇侧倒置阻生中切牙效果评价[J]. 上海口腔医学, 2023, 32(2): 193-197.
[7]	宋珏, 刘好好, 刘嘉靓, 陈美华. 上颌磨牙与上颌窦黏膜增厚发生的相关性分析[J]. 上海口腔医学, 2022, 31(6): 638-642.
[8]	吕云松, 李朝晖. 颞下颌关节紊乱综合征伴偏侧咀嚼患者锥形束CT特征分析[J]. 上海口腔医学, 2022, 31(6): 653-656.
[9]	周子芊, 陈振琦. 上颌窦底对上颌第一磨牙近中移动的影响[J]. 上海口腔医学, 2022, 31(6): 661-667.
[10]	林翔, 傅裕杰, 任根强, 温佳欢, 陈宇飞, 张旗. U-Net神经网络分割锥形束CT影像中下颌磨牙牙体与牙髓腔及其准确性验证[J]. 上海口腔医学, 2022, 31(5): 454-459.
[11]	马智菲, 周梦琪, 王丽珍, 承清, 洪瑾. Er:YAG 激光在小型猪牙髓血运重建术中的应用效果评价[J]. 上海口腔医学, 2022, 31(4): 367-373.
[12]	黄锦程, 赵华强, 李国菊. Stafne骨腔影像学特征：基于CBCT的回顾性分析[J]. 上海口腔医学, 2022, 31(4): 439-444.
[13]	林怡君, 鄢洁雅, 王天鸽, 周志捷, 廖盛轩, 毛丽霞, 刘加强. 减数正畸治疗中中切牙牙根及牙槽骨形态变化的锥形束CT测量分析[J]. 上海口腔医学, 2022, 31(2): 211-216.
[14]	杜悦, 彭笑, 韩瑞, 王栋, 胡洁, 高廷益, 张凯. 颌骨囊肿开窗治疗临床特征动态研究[J]. 上海口腔医学, 2021, 30(6): 658-662.
[15]	马晓晴, 赵宁, 董晛, 钱文昊. 2种锥形束CT转化头颅侧位片的定点一致性探讨[J]. 上海口腔医学, 2021, 30(5): 522-525.