自锁托槽与传统托槽导致正畸牙根吸收的锥形束CT比较

上海口腔医学 ›› 2016, Vol. 25 ›› Issue (2): 238-241.

自锁托槽与传统托槽导致正畸牙根吸收的锥形束CT比较

刘筠^1*，郭宏铭²

1.杭州口腔医院正畸中心,浙江杭州 310005；
2.首都医科大学附属北京口腔医院正畸科,北京 100050

收稿日期:2015-07-13 修回日期:2015-09-26 出版日期:2016-03-25 发布日期:2016-05-06
作者简介:刘筠(1983-),女,硕士,主治医师刘筠,E-mail: liuyun0825@126.com

Comparison of root resorption between self-ligating and conventional brackets using cone-beam CT

LIU Yun¹,GUO Hong-ming²

1.Department of Orthodontics, Hangzhou Dental Hospital. Hangzhou 310005,Zhejiang Province;
2.Department of Orthodontics, Beijing Stomatological Hospital, Capital Medical University. Beijing 100050, China

Received:2015-07-13 Revised:2015-09-26 Online:2016-03-25 Published:2016-05-06

摘要/Abstract

摘要： 目的:比较被动自锁托槽与传统直丝弓托槽造成牙根根尖外吸收量的差异,分析被动自锁托槽与牙根吸收的关系。方法:将50例患者随机分为2组,每组25例,分别应用被动自锁托槽或传统直丝弓托槽(0.022系统)进行矫治。治疗前、后拍摄锥形束CT(CBCT),测量上切牙的牙根根尖外吸收量。采用SPSS17.0软件包对2组牙根根尖外吸收量的差异进行t检验。结果:被动自锁托槽和传统直丝弓托槽治疗结束后,上颌切牙牙根吸收量无显著差异(P>0.05)。结论:被动自锁托槽和传统直丝弓托槽都会造成一定量的牙根吸收,但两者造成的牙根根尖外吸收量差异无显著性,不能认为被动自锁托槽会诱发更多的牙根吸收。

关键词: 自锁托槽, 传统直丝弓托槽, 牙根吸收, 锥形束CT

Abstract: PURPOSE: To analyze the differences of root resorption between passive self-ligating and conventional brackets, and to determine the relationship between passive self-ligating brackets and root resorption. METHODS: Fifty patients were randomly divided into 2 groups using passive self-ligating brackets or conventional straight wire brackets (0.022 system), respectively. Cone-beam CT was taken before and after treatment. The amount of external apical root resorption of maxillary incisors was measured on CBCT images. Student's t test was performed to analyze the differences of root apical resorption between the 2 groups with SPSS17.0 software package. RESULTS: No significant difference(P> 0.05) in root resorption of maxillary incisors was found between passive self-ligating brackets and conventional brackets. CONCLUSIONS: Passive self-ligating brackets and conventional brackets can cause root resorption, but the difference was not significant. Passive self-ligating brackets do not induce more root resorption.

Key words: Self-ligating brackets, Conventional brackets, External apical root resorption, Cone-beam CT

中图分类号:

R783.5

刘筠，郭宏铭. 自锁托槽与传统托槽导致正畸牙根吸收的锥形束CT比较[J]. 上海口腔医学, 2016, 25(2): 238-241.

LIU Yun,GUO Hong-ming. Comparison of root resorption between self-ligating and conventional brackets using cone-beam CT[J]. Shanghai Journal of Stomatology, 2016, 25(2): 238-241.

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