[1]周允芝,马丽琼,唐旭炎,等. MRC肌功能矫治器矫治替牙期安氏Ⅱ类错牙合畸形疗效分析[J].中国美容医学,2020,(4):120-123.
　ZHOU Yun-zhi,MA Li-qiong,TANG Xu-yan,et al. Analysis of Curative Effect of Mrc Muscle Functional Appliance on Class ⅡMalocclusion in Mixed Dentition[J].Medical Aesthetics and Beauty,2020,(4):120-123.
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 MRC肌功能矫治器矫治替牙期安氏Ⅱ类错牙合畸形疗效分析
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《中国美容医学》[ISSN:1008-6445/CN:61-1347/R]

卷:
期数:
2020年4期
页码:
120-123
栏目:
出版日期:
2020-04-28

文章信息/Info

Title:
 Analysis of Curative Effect of Mrc Muscle Functional Appliance on Class Ⅱ
Malocclusion in Mixed Dentition
文章编号:
1008-6455（2020）04-0120-03
作者:
 周允芝1; 马丽琼2; 唐旭炎3; 李全利3; 刘世明3; 沈 军4;  徐建光4
Author(s):
 ZHOU Yun-zhi1;  MA Li-qiong2; TANG Xu-yan3;  LI Quan-li3;  LIU Shi-ming3;  SHEN Jun4;  XU Jian-guang4
关键词:
 ; [关键词]肌功能训练器; 下颌后缩; 错牙合畸形; 硬组织; 软组织; 前牙覆牙合; 前牙覆盖
Keywords:
 ; Key words: muscle function trainer;  mandibular retraction;  malocclusion;  hard tissue;  soft tissue;  anterior overbite;  anterior tooth cover
分类号:
R783.5
文献标志码:
A
摘要:
[摘要]目的：肌功能训练矫治器（MRC）矫治替牙期安氏Ⅱ类错牙合畸形疗效分析。方法：选取2015年1月-2019年1月在笔者医
院就诊的82例安氏Ⅱ类错牙合畸形患儿，均采用MRC进行治疗。比较治疗前后患儿头影测量结果及前牙覆牙合覆盖情况。结果：
与矫治前比较，矫治后侧貌改善明显；硬组织头影测量值SNA、SNB、L1-NB和L1-MP显著升高，ANB、U1-SN和U1-NA显著降
低，差异具有统计学意义（P ＜0.05）；患儿的侧面软组织角度中OE-Prn-Pos角、OE-N’-B’角、OE-N’-Sn角、OE-N’-Pos角、
N’-Prn-Pos角以及N’-Sn-Pos角均大于矫治前，Sn-N’-B’角小于矫治前，差异具有统计学意义（P ＜0.05）；前牙覆牙合、覆盖
情况相比于矫治前均显著改善，差异具有统计学意义（P ＜0.05）。结论：应用MRC功能矫治器可以改善患儿后缩的错牙合畸
形，改善患儿的下颌前突侧貌，可在临床上推广使用。

Abstract:

Abstract: Objective To analysed the curative effect of muscle function training appliance (MRC) muscle functional appliance
on Class Ⅱ malocclusion in mixed dentition. Methods 82 cases of Class II children admitted to our hospital from January
2015 to January 2019 were treated with MRC. Hard tissue cephalometric measurements and soft tissue angle values were
measured respectivelybefore and after treatment, and the overbite coverage of anterior teeth was compared. Results Compared
with before treatment, the posterior aspect of the treatment was obviously improved. Hard tissue cephalometric values SNA,
SNB, L1-NB and L1-MP were significantly increased, while ANB, U1-SN and U1-NA were significantly decreased, with
statistically signifi cant differences (P ＜0.05). The OE-Prn-Pos angle, OE-N’-B’ angle, OE-N’-Sn angle, OE-N’-Pos angle,
N’-Prn-Pos angle and N’-Sn-Pos angle in the side soft tissue angle of the child were all larger than before treatment, while
Sn-N’-B’ angle was smaller than before treatment, the differences were statistically signifi cant (P ＜0.05). The situation
of overbite and overbite of anterior teeth was signifi cantly improved compared with that before treatment, and the difference
was statistically signifi cant(P＜0.05). Conclusion The application of MRC functional appliance can improve the malocclusion of
children with backward contraction and improve the mandibular protrusion profi le of children, which is worthy of clinical application.

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更新日期/Last Update: 2020-04-28