安氏Ⅱ类2分类错牙合上前牙冠根形态的锥形束CT分析

doi:10.3969/j.issn.1671-167X.2016.01.019

北京大学学报(医学版) ›› 2016, Vol. 48 ›› Issue (1): 105-110. doi: 10.3969/j.issn.1671-167X.2016.01.019

安氏Ⅱ类2分类错牙合上前牙冠根形态的锥形束CT分析

黎敏1*，王斯维1，赵一姣2，刘怡1△

（北京大学口腔医学院·口腔医院 1. 正畸科， 2. 口腔医学数字化研究中心，口腔数字化医疗技术和材料国家工程实验室，北京100081)

出版日期:2016-02-18 发布日期:2016-02-18
通讯作者: 刘怡 E-mail:lyortho@163.com
基金资助:
国家高技术研究发展计划（863计划）（2013AA040803）资助

A cone-beam computed tomography study on crown-root morphology of maxillary anterior teeth in Class Ⅱ, division 2 malocclusion

LI Min1*, WANG Si-wei1, ZHAO Yi-jiao2, LIU Yi1△

(1.Department of Orthodontics,2.Center of Digital Dentistry & National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University School and Hospital of Stomatology, Beijing 100081,China)

Online:2016-02-18 Published:2016-02-18
Contact: LIU Yi E-mail:lyortho@163.com
Supported by:
Supported by the National High Technology Research and Development Program of China(863 Program)(2013AA040803)

摘要/Abstract

摘要：

目的：借助锥形束CT（cone-beam computed tomography，CBCT）结合计算机辅助测量技术，描述研究安氏Ⅱ类2分类错牙合畸形上前牙的冠根形态，为此类错牙合畸形的临床治疗提供指导。方法：从就诊于北京大学口腔医院正畸科的患者中分别选取诊断为安氏Ⅱ类2分类错牙合、安氏Ⅰ类错牙合者各18例（以下简称为Ⅱ类2组、Ⅰ类组），所有患者于治疗前均拍摄了CBCT 影像，在InvivoDental 5.0图像处理软件中利用多平面重建方法截取上前牙唇舌向最大截面图，在此截图上从冠根角、面轴角两方面分析研究两组间上前牙的冠根形态差异。所得数据输入SPSS 20.0统计软件进行统计分析，采用t检验比较Ⅰ类组及Ⅱ类2组冠根角、面轴角差异，以及Ⅱ类2组冠根角与冠根角为180°时的差异，检验水准为双侧α=0.05。结果：Ⅰ类组上颌中切牙、侧切牙、尖牙冠根角分别为179.08°±3.31°、176.55°±2.77°和184.20°±2.51°，面轴角分别为21.00°±2.63°、19.63°±2.35°和19.36°±2.30°；Ⅱ类2组上颌中切牙、侧切牙、尖牙冠根角分别为176.80°±2.62°、174.13°±3.28°和181.79°±2.88°，面轴角分别为23.20°±2.95°、22.29°±2.19°和20.61°±2.34°，除尖牙面轴角外，与Ⅰ类组相比差异均有统计学意义。Ⅱ类2组各上前牙冠根角与冠根角为180°时比较差异均有统计学意义，即这些牙的牙冠长轴和牙根长轴不都在同一直线上，存在冠根成角的现象。结论：安氏Ⅱ类2分类错牙合畸形患者上前牙具有更特殊的冠根形态，即牙冠长轴与牙根长轴明显成角，上切牙牙冠相对牙根明显舌倾，牙冠唇面形态有别于安氏Ⅰ类错牙合畸形的患者，这对治疗后牙根位置和转矩表达都会有影响，提示治疗此类患者需要考虑其上前牙的冠根形态，上前牙移动的理想位置应由牙根而不是牙冠的位置决定。

关键词: 错牙合, 安氏Ⅱ类, 锥束计算机体层摄影术, 冠根角, 面轴角

Abstract:

Objective： To study crown-root morphology of maxillary anterior teeth in Class Ⅱ, division 2 malocclusion using cone-beam CT (CBCT) combined with computer aided measurement technology to provide guidance for clinical treatment. Methods: The samples which consisted of 36 cases radiographed with CBCT techniques were selected and divided into two groups (18 each ) based on the type of malocclusion presented: Class Ⅱ, division 2 group (groupⅡ2) and Class Ⅰ group (groupⅠ). The measurements of crown-root morphology including crown-root angle and surface-shaft angle were got by Multiple Planer Reconstruction of CBCT data uploaded into InvivoDental software 5.0. The data were processed with SPSS 20.0 software package and t test was employed for comparison of angular measurements. Results: In group Ⅰ, crown-root angles of maxillary central incisor, maxillary lateral incisor and maxillary canines were 179.08°±3.31°, 176.55°±2.77°and 184.20°±2.51° respectively, surface-shaft angles were 21.00°±2.63°, 19.63°±2.35° and 19.36°±2.30° respectively. While in group Ⅱ 2, crown-root angles of maxillary central incisor, maxillary lateral incisor and maxillary canines were 176.80°±2.62°, 174.13°±3.28° and 181.79°±2.88° respectively, surface-shaft angles were 23.20°±2.95°, 22.29°±2.19° and 20.61°±2.34° respectively. Compared with group Ⅰ, significant statistical differences were observed with the exception of surface-shaft angle of maxillary incisor. There was significant difference in crown-root angle between group Ⅱ 2 and 180°.Conclusion: The maxillary anterior teeth in Class Ⅱ, division 2 malocclusion exhibited significant crown-root morphology which would influence the torque after orthodontic treatment. Special attention should be paid to the position of maxillary anterior teeth roots during orthodontic treatment for Class Ⅱ, division 2 malocclusion. The ideal position of tooth movement should be decided by the root rather than the location of the crowns.

Key words: Malocclusion, Angle class Ⅱ, Cone-beam computed tomography, Crown-root angle, Surface-shaft angle

中图分类号:

R783.5

黎敏，王斯维，赵一姣，刘怡. 安氏Ⅱ类2分类错牙合上前牙冠根形态的锥形束CT分析[J]. 北京大学学报(医学版), 2016, 48(1): 105-110.

LI Min, WANG Si-wei, ZHAO Yi-jiao, LIU Yi. A cone-beam computed tomography study on crown-root morphology of maxillary anterior teeth in Class Ⅱ, division 2 malocclusion[J]. Journal of Peking University(Health Sciences), 2016, 48(1): 105-110.

参考文献

相关文章 15

[1]	凌晓彤,屈留洋,郑丹妮,杨静,闫雪冰,柳登高,高岩. 牙源性钙化囊肿与牙源性钙化上皮瘤的三维影像特点[J]. 北京大学学报（医学版）, 2024, 56(1): 131-137.
[2]	段登辉,WANGHom-Lay,王恩博. 可吸收胶原膜在颊侧袋形瓣引导性骨再生手术中的作用: 一项回顾性影像学队列研究[J]. 北京大学学报（医学版）, 2023, 55(6): 1097-1104.
[3]	刘伟涛,王怡然,王雪东,周彦恒. 锥形束CT研究上颌反复扩缩前方牵引后上颌骨缝的三维变化[J]. 北京大学学报（医学版）, 2022, 54(2): 346-355.
[4]	杨刚,胡文杰,曹洁,柳登高. 牙周健康的上颌前牙唇侧嵴顶上牙龈的三维形态分析[J]. 北京大学学报（医学版）, 2021, 53(5): 990-994.
[5]	高璐,谷岩. 中国人群腭中缝形态特点分期与Demirjian牙龄的相关性[J]. 北京大学学报（医学版）, 2021, 53(1): 133-138.
[6]	毛铭馨,徐莉,靖无迪,徐筱,侯建霞,李小彤,王晓霞. 骨性安氏Ⅲ类错牙合畸形患者前牙唇侧牙槽嵴顶位置及相关因素分析[J]. 北京大学学报（医学版）, 2020, 52(1): 77-82.
[7]	杜仁杰,焦剑,周彦恒,施捷. 侵袭性牙周炎患者正畸前后的咬合变化[J]. 北京大学学报（医学版）, 2019, 51(5): 919-924.
[8]	王秀婧,张怡美,周彦恒. 骨性Ⅲ类错牙合畸形患者正畸-正颌联合治疗的稳定性[J]. 北京大学学报（医学版）, 2019, 51(1): 86-92.
[9]	贾鹏程，杨刚，胡文杰，赵一姣，刘木清. 根尖片评估单根牙骨内牙根表面积的准确性[J]. 北京大学学报(医学版), 2018, 50(1): 91-97.
[10]	马静，江久汇. 骨性Ⅱ类和Ⅲ类高角错牙合患者下切牙区的牙槽骨形态分析[J]. 北京大学学报(医学版), 2018, 50(1): 98-103.
[11]	徐筱，徐莉，江久汇，吴佳琪，李小彤，靖无迪. 锥形束CT评判安氏Ⅲ类错牙合上前牙骨开裂与骨开窗的准确性分析[J]. 北京大学学报(医学版), 2018, 50(1): 104-109.
[12]	曹婕1，孟焕新. 锥形束CT用于评估牙槽骨骨缺损的情况和骨再生区域骨密度的变化[J]. 北京大学学报(医学版), 2018, 50(1): 110-116.
[13]	常大桐，周彦恒，刘伟涛. 上颌反复快速扩缩对上气道影响的锥束CT研究[J]. 北京大学学报(医学版), 2017, 49(4): 685-690.
[14]	范少轻，周彦恒. 种植体支抗整体远中移动下颌牙列治疗骨性Ⅲ类错牙合的疗效评价[J]. 北京大学学报(医学版), 2017, 49(3): 531-539.
[15]	陈全，张晓1张智勇，高巍，刘文曙，孟甜，陈宇寰，王慧丽. 上颌窦前外侧壁骨内血管孔道位置锥形束CT影像判断分析及其临床应对措施[J]. 北京大学学报(医学版), 2017, 49(3): 540-546.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

安氏Ⅱ类2分类错牙合上前牙冠根形态的锥形束CT分析

A cone-beam computed tomography study on crown-root morphology of maxillary anterior teeth in Class Ⅱ, division 2 malocclusion

PDF (PC)

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

本文评价

推荐阅读 0