口腔医学研究 ›› 2019, Vol. 35 ›› Issue (8): 794-797.DOI: 10.13701/j.cnki.kqyxyj.2019.08.017

• 口腔正畸学研究 • 上一篇    下一篇

安氏Ⅱ类1分类上中切牙骨量及牙根变化的CBCT研究

陈良娇, 王朝俭*, 何静怡, 邓玉莲, 冯梓峻   

  1. 广州医科大学附属口腔医院·广州口腔病研究所·口腔医学重点实验室 广东 广州 510140
  • 收稿日期:2018-12-25 出版日期:2019-08-28 发布日期:2019-08-22
  • 通讯作者: 王朝俭,E-mail:wangzhaojiannx@163.com
  • 作者简介:陈良娇(1985~ ),女,安徽六安人,博士,副主任医师,研究方向:牙齿移动的安全性研究。
  • 基金资助:
    广东省教育厅临床教学基地教学改革项目(编号:2017JD112)
    广州医科大学学术骨干培育计划(编号:B185004177)

CBCT Study on Three Dimensional Alveolar Bone Changes and Root Absorption of Maxillary Incisors in Patients with Class Ⅱ Division 1 Malocclusion

CHEN Liangjiao, WANG Zhaojian*, HE jingyi, DENG Yulian, FENG Zijun   

  1. Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
  • Received:2018-12-25 Online:2019-08-28 Published:2019-08-22

摘要: 目的:运用CBCT影像对比正畸前后安Ⅱ类1分类上中切牙三维骨量变化,观察骨开窗/骨开裂及牙根吸收。方法:收集符合纳入标准的样本,测量治疗前后上中切牙近/远中侧,唇/舌侧牙槽骨高度及唇/舌侧牙槽骨厚度,统计骨开窗/骨开裂;对比牙根长度及牙齿松动度。结果:上中切牙近/远中侧牙槽骨高度大于唇/舌侧,舌侧牙槽骨厚度大于唇侧。唇舌侧均见小于2 mm骨开裂,未见骨开窗。正畸后,槽骨高度均降低,舌侧牙槽骨厚度吸收,舌侧骨开裂加大,牙根长度变短,牙齿松动度均小于1 mm。结论:正畸使三维骨量均发生吸收,并造成牙根吸收,未引起牙齿松动。虽然治疗造成了一定的骨量吸收,但基本不影响上前牙的牙周健康。

关键词: 错牙合畸形, 牙槽骨, 骨开裂

Abstract: Objective: To compare the three dimensional bone changes of maxillary incisors in patients with class Ⅱ division 1 malocclusion before and after orthodontic treatment, and to observe the root absorption and dehiscence/fenestration. Methods: Standard samples were collected. The height and thickness of alveolar bone were measured. The change of root length was observed. Results: The height of alveolar bone in mesial and distal side was greater than that of buccal and lingual side. The dehiscence was less than 2mm on the buccal/lingual side and no fenestration was seen. After orthodontic treatment, the three dimensional alveolar bone changes were observed. The height and thickness of the alveolar bone in lingual side were reduced. The dehiscence in lingual side was increased. The orthodontic treatment caused a certain degree of root absorption. Conclusion: Orthodontic treatment caused the decrease of height and thickness of alveolar bone. The dehiscence in lingual side was increased. The orthodontic treatment caused a certain degree of root absorption. However, it basically does not affect the periodontal health of anterior teeth.

Key words: Malocclusion, Alveolar bone, Dehiscence