中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (29): 4593-4599.doi: 10.12307/2021.155

• 口腔组织构建 oral tissue construction •    下一篇

头影测量分析2种方法矫治乳牙反牙合后上颌恒切牙胚位移的比较

刘亚非1,左艳萍1,刘  昕2,赵利霞1,尉  静1   

  1. 1河北医科大学第一医院口腔正畸科,河北省石家庄市   050031;2河北医科大学第四医院口腔科,河北省石家庄市   050017
  • 收稿日期:2020-11-09 修回日期:2020-11-12 接受日期:2020-12-24 出版日期:2021-10-18 发布日期:2021-06-01
  • 通讯作者: 左艳萍,博士,教授,河北医科大学第一医院口腔正畸科,河北省石家庄市 050031
  • 作者简介:刘亚非,女,1975年生,河北省石家庄市人,汉族,2008年河北医科大学毕业,硕士,副主任医师,主要从事口腔正畸研究。
  • 基金资助:
    河北省卫生厅科研基金项目(20100050) ,项目负责人:刘亚非

Two appliances for anterior crossbite correction in deciduous dentition: a comparison of permanent incisor germ displacement based on cephalometric measurement

Liu Yafei1, Zuo Yanping1, Liu Xin2, Zhao Lixia1, Wei Jing1   

  1. 1Department of Orthodontics, the First Hospital of Hebei Medical University, Shijiazhuang 050031, Hebei Province, China; 2Department of Stomatology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050017, Hebei Province, China
  • Received:2020-11-09 Revised:2020-11-12 Accepted:2020-12-24 Online:2021-10-18 Published:2021-06-01
  • Contact: Zuo Yanping, MD, Professor, Department of Orthodontics, the First Hospital of Hebei Medical University, Shijiazhuang 050031, Hebei Province, China
  • About author:Liu Yafei, Master, Associate chief physician, Department of Orthodontics, the First Hospital of Hebei Medical University, Shijiazhuang 050031, Hebei Province, China
  • Supported by:
    the Scientific Research Fund of Hebei Provincial Health Department, No. 20100050 (to LYF)

摘要:

文题释义:
牙源性反牙合:仅为牙的错位(上切牙舌向,下切牙唇向),颌骨、后牙关系基本正常。如单纯的前牙反牙合及个别牙反牙合、功能性肌型反牙合、上下颌骨关系在MPP正常、下颌闭合时存在牙合干扰或不良习惯引起口颌系统肌功能紊乱使ICP时下颌前伸位于上颌前方。该型颌骨大小形态基本正常,多见于乳牙期和替牙期反牙合。
骨性反牙合:由于骨骼发育异常导致上下颌骨大小、形态、位置关系异常,下颌骨较上颌骨相对前突,上切牙代偿性唇倾,下牙代偿性舌倾。骨性反牙合分为上颌发育不足,下颌发育正常;上颌发育正常,下颌发育过度;上颌发育不足,下颌发育过度。


背景:目前对于乳牙反牙合矫治后恒切牙牙胚的影响机制尚不明确。

目的:观察分析改良牙合垫矫治器和前牵引固定矫治器矫治乳牙反牙合后,上颌恒切牙牙胚位置及角度的改变。

方法:选取 2008至2018年收治的乳牙反牙合患者36例,根据矫治方法不同分为:牙合垫组,使用改良牙合垫矫治器矫治;前牵组,使用前牵引固定矫治器矫治乳牙反牙合。测量分析矫治前后上颌恒牙胚位置和角度的改变。该研究方案的实施符合河北医科大学第一医院的相关伦理要求,患儿监护人对试验过程完全知情同意。
结果与结论:①治疗前头影测量患者恒切牙胚的倾斜度G1-SN、G1-NA,牙合垫组均小于前牵组(均P < 0.05);②2组治疗后恒切牙胚切缘及根尖在X轴距,Y轴距均较治疗前均有明显增加(P < 0.05或P < 0.01),前牵组各指标的增长量显著大于牙合垫组(P < 0.05或P < 0.01或P < 0.001);③结果说明,改良牙合垫矫治器和前牵引固定矫治器矫治乳牙反牙合后,上颌恒切牙胚均发生向前向下移动,前牵组的位移更为显著。前牵引矫治较牙合垫矫治器矫治对恒牙胚的影响更大,更能促进恒切牙胚的前下方移动,同时其上颌恒牙胚的位移方式更接近整体移动。

https://orcid.org/0000-0001-5052-189X (刘亚非)

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 乳牙反牙合, 恒切牙胚, 改良牙合垫矫治器, 前牵引固定矫治器, Ⅲ类错牙合

Abstract:

BACKGROUND: Currently, it is still unclear on the mechanism by which anterior crossbite correction in deciduous dentition exerts a role in permanent incisor germ.

OBJECTIVE: To compare and analyze the changes in the position and angle of the maxillary permanent incisor germ after the modified block appliance and the protraction appliance are used to correct anterior crossbite in the deciduous dentition.  

METHODS: Thirty-six patients with deciduous anterior crossbite admitted from 2008 to 2018 were treated with modified block appliance or protraction appliance. The positions and angles of maxillary permanent incisor germs before and after orthodontic treatment were measured and analyzed. The implementation of the study protocol complied with the relevant ethical requirements of the First Hospital of Hebei Medical University, and guardians of these included children were fully informed of the trial process. 
RESULTS AND CONCLUSION: Preoperatively, the inclination of the maxillary permanent incisor germs G1-SN and G1-NA were smaller in the modified block appliance group than in the protraction appliance group (both P < 0.05) The axial distance of the incisal edge and root tip of maxillary permanent incisor germs in X-axis and Y-axis was increased obviously in the two groups (P < 0.05 or P < 0.01), especially in the protraction appliance group (P < 0.05 or P < 0.01 or P < 0.001). These findings indicate that both modified block appliance and protraction appliance can make maxillary permanent incisor germs move forward and downward, and the displacement is more evident after orthodontic treatment with protraction appliance. Compared with the modified block appliance, the protraction appliance has a more obvious effect on the forward and downward movement of maxillary permanent incisor germs, and this movement mode is similar to the whole movement.

Key words: deciduous anterior crossbite, permanent incisor germs, modified block appliance, protraction appliance, class III malocclusion

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