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《中国美容医学》[ISSN:1008-6445/CN:61-1347/R]

卷:

期数:

2023年9期

页码:

115-120

栏目:

出版日期:

2023-09-10

文章信息/Info

Title:

Vertical Position Changes of Teeth and Mandible Following Different Upper Incisors Retraction Techniques in Orthodontics Treatment

文章编号:

1008-6455（2023）09-0115-05

作者:

郭陈琳; 郑梦钰; 胡耀政; 陈建明

(广州医科大学附属口腔医院正畸科·广东省口腔组织修复与重建工程技术研究中心·广州市口腔再生医学基础与应用研究 重点实验室 广东 广州 510182 )

Author(s):

GUO Chenlin; ZHENG Mengyu; HU Yaozheng; CHEN Jianming

(Department of Orthodontics, Affi liated Stomatology Hospital of Guangzhou Medical University,Guangdong Engineering Research Center of Oral Restoration and Reconstruction,Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine,Guangzhou 510182,Guangdong,China)

关键词:

微种植体; Ⅱ类牵引; 牙齿位置; 下颌骨位置; 垂直向控制

Keywords:

mini-implant anchorage;  Class intermaxillary elastics;  dental position;  mandibular position;  vertical control

分类号:

R783.5

DOI:

10.15909/j.cnki.cn61-1347/r.005895

文献标志码:

A

摘要:

目的：探讨成人骨性Ⅱ类错牙合在拔牙矫治中以微种植体支抗及Ⅱ类牵引内收上前牙对切牙、磨牙及下颌骨垂直向位置 的影响。方法：本研究回顾了57例成人正畸治疗患者资料，其中治疗组（29例）以微种植体压低内收上前牙，对照组（28 例）使用Ⅱ类牵引。对治疗前后头颅侧位片进行重叠分析比较。结果：治疗后，治疗组上切牙出现压低，上磨牙垂直向位置 无明显变化，下磨牙出现伸长。对照组中上切牙及上下磨牙均伸长。对照组中FH-MP增加和PogH减小，治疗组正好相反；提 示对照组治疗后下颌出现顺时针旋转，而治疗组无明显旋转。结论：上颌微种植体支抗对上颌切牙及磨牙垂直向控制有一定 的帮助，可以避免下颌骨顺时针旋转，有利于骨性Ⅱ类侧貌的改善。?/html>

Abstract:

Objective The purposes of this study were to evaluate incisors, molars and mandibular vertical position changes in the adult Skeletal Class Ⅱ extraction patients by two upper incisors retraction means of mini-implant and class Ⅱ inter-maxillary elastics. Methods In this study, we reviewed the data of 57 patients undergoing adult orthodontic treatment.The treatment group(29 cases) was treated with mini-implant anchorage, and control group (28 cases) was treated with class Ⅱ intermaxillary elastics without mini-implant anchorage. The pretreatment and posttreatment cephalograms were traced to evaluate the changes of teeth and mandibular position. Results After treatment, the upper incisors were intruded and the lower molars were extruded in the treatment group, no signifi cant vertical change of upper molars was observed. The control group showed vertical movement of upper incisors and molars. FH-MP was increased and PogH was decreased in the control group, but signifi cantly reversed in the treatment group. The outcomes indicated that there was a certain degree of clockwise rotation of the mandibular in the control group, but reversed in the treatment group. Conclusion Mini-implant anchorage is eff ective in controlling the vertical movement of upper incisors and molars, and can avoid clockwise rotation of the mandible, which would improve the profi le of Skeletal Class Ⅱ patients.

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更新日期/Last Update: 2023-09-26