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中华口腔医学研究杂志(电子版) ›› 2020, Vol. 14 ›› Issue (02) : 101 -107. doi: 10.3877/cma.j.issn.1674-1366.2020.02.007

所属专题: 文献

临床研究

青少年骨性Ⅰ类错畸形拔牙矫治前后面部软组织三维特征变化研究
文兆祥1, 张雪芹1, 曾越1, 陈正元1, 谢永建1, 吴莉萍1,()   
  1. 1. 中山大学光华口腔医学院·附属口腔医院,广东省口腔医学重点实验室,广州 510055
  • 收稿日期:2019-11-27 出版日期:2020-04-01
  • 通信作者: 吴莉萍

A study on the effects of extraction correction on the 3D characteristics of facial soft tissue of adolescents with skeletal classⅠ

Zhaoxiang Wen1, Xueqin Zhang1, Yue Zeng1, Zhengyuan Chen1, Yongjian Xie1, Liping Wu1,()   

  1. 1. Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincal Key Laboratory of Stomatology, Guangzhou 510055, China
  • Received:2019-11-27 Published:2020-04-01
  • Corresponding author: Liping Wu
  • About author:
    Corresponding author: Wu Liping, Email:
  • Supported by:
    Medical Scientific Research Foundation of Guangdong(A2018418)
引用本文:

文兆祥, 张雪芹, 曾越, 陈正元, 谢永建, 吴莉萍. 青少年骨性Ⅰ类错畸形拔牙矫治前后面部软组织三维特征变化研究[J]. 中华口腔医学研究杂志(电子版), 2020, 14(02): 101-107.

Zhaoxiang Wen, Xueqin Zhang, Yue Zeng, Zhengyuan Chen, Yongjian Xie, Liping Wu. A study on the effects of extraction correction on the 3D characteristics of facial soft tissue of adolescents with skeletal classⅠ[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2020, 14(02): 101-107.

目的

应用3dMD?面部三维成像系统研究拔牙矫治对青少年骨性Ⅰ类错畸形面部软组织三维特征的影响,为正畸矫治提供参考。

方法

选取2016—2019年期间于中山大学附属口腔医院正畸科就诊的青少年骨性Ⅰ类患者50例,其中拔牙组25例,非拔牙组25例为对照组,应用3dMD?收集正畸治疗前后的面部三维图像数据,通过3dMD? vultus软件测量线距、角度、体积变化,应用SPSS 20.0统计分析软件对各项测量指标的比较采用独立样本t检验。

结果

正畸治疗后,在线距方面,拔牙组、非拔牙组前下面高变化量分别为(0.28 ± 2.28)、(1.85 ± 2.18)mm,差异有统计学意义(t = -2.238,P = 0.031);拔牙组下颌高、颏高、唇宽变化量分别为(-0.52 ± 2.31)、(-1.14 ± 2.64)、(-1.33 ± 3.62)mm,非拔牙组则分别为(1.64 ± 2.42)、(0.93 ± 2.51)、(1.40 ± 2.16)mm,差异有统计学意义(t下颌高 = -2.878,P下颌高 = 0.007;t颏高 = -2.506,P颏高 = 0.017;t唇宽 = -2.942,P唇宽 = 0.006)。在角度方面,拔牙组、非拔牙组鼻唇角变化量分别为4.91° ± 3.12°、1.50° ± 4.26°,差异有统计学意义(t = 2.692,P = 0.011);拔牙组、非拔牙组颏唇角变化量分别为-0.24° ± 6.83°、4.82° ± 6.50°,差异有统计学意义(t = -2.373,P = 0.023);拔牙组、非拔牙组唇角变化量分别为-16.80° ± 12.65°、-1.04° ± 11.24°,差异有统计学意义(t = -4.171,P<0.001)。在体积方面,拔牙组、非拔牙组唇部变化量分别为(-0.66 ± 1.24)、(0.46 ± 1.43)cm3,差异有统计学意义(t = -2.584,P = 0.014);拔牙组、非拔牙组颏部变化量分别为(-0.16 ± 0.94)、(0.65 ± 0.91)cm3,差异有统计学意义(t = -2.766,P = 0.009)。

结论

(1)拔牙与非拔牙矫治对患者面下1/3水平向无明显影响,但对面下1/3的垂直向影响有差异,非拔牙较拔牙矫治更易导致面部高度的增加;(2)开唇露齿的青少年患者经拔牙矫治可有效改善颏、唇部形态;(3)对于面部消瘦、颧部凸出的患者,应慎重拔牙矫治。

Objective

In order to provide reference for orthodontic treatment, the three-dimensional characteristics of facial soft tissue of adolescents with skeletal classⅠ were compared between extraction and non-extraction cases based on 3dMD? 3D facial imaging system.

Methods

A total of 50 adolescent patients with skeletal class Ⅰ treated at the Department of Orthodontics of Hospital of Stomatology of Sun Yat-sen University from 2016 to 2019 were selected, including 25 patients in the extraction group and 25 patients in the non-extraction group as the control group. 3dMD? was used to collect the 3D facial image data before and after orthodontic treatment, 3dMD? vultus software was used to measure line distance, angle and volume, and the differences between the two groups were analyzed by SPSS 20.0 software.

Results

After orthodontic treatment, the changes in the distance of lower facial height of extraction group and non-extraction group were (0.28 ± 2.28) and (1.85 ± 2.18) mm respectively (t = -2.238, P = 0.031) ; the changes in mandibular height, chin height and lip width of extraction group were (-0.52 ± 2.31) , (-1.14 ± 2.64) and (-1.33 ± 3.62) mm respectively, and those of non-extraction group were (1.64 ± 2.42) , (0.93 ± 2.51) and (1.40 ± 2.16) mm respectively (tmandibular height = -2.878, Pmandibular height = 0.007; tchin height = -2.506, Pchin height = 0.017; tlip width = -2.942, Plip width = 0.006) . In terms of angle, the changes in nasolip angle of extraction group and non-extraction group were 4.91° ± 3.12° and 1.50° ± 4.26° respectively (t = 2.692, P = 0.011) ; the changes in chin-lip angle of extraction group and non-extraction group were -0.24° ± 6.83° and 4.82° ± 6.50° respectively (t = -2.373, P = 0.023) ; the changes in lip angle of extraction group and non-extraction group were -16.80° ± 12.65° and -1.05° ± 11.24° respectively (t = -4.171, P<0.001) . In terms of volume, the changes in lip of extraction group and non-extraction group were (-0.66 ± 1.24) and (0.46 ± 1.43) cm3 respectively (t = -2.584, P = 0.014) ; the changes in chin of extraction group and non-extraction group were (-0.16 ± 0.94) and (0.65 ± 0.91) cm3 respectively (t = -2.766, P = 0.009) .

Conclusions

(1) There was no significant difference between extraction and non-extraction in the changes of horizontal direction of 1/3 below the face, but there was difference in the vertical direction of 1/3 below the face. And non-extraction was more likely to lead to the increase in face height than extraction. (2) It can effectively improve the shape of chin and lip in adolescent patients with poor lip seal after extraction correction. (3) The patients with thin face and protruding cheekbones should be treated carefully by extraction.

图1 X线头影测量相关标志示意图 S:蝶鞍点;N:鼻根点;Go:下颌角点;Gn:颏顶点;A:上齿槽座点;B:下齿槽座点
图2 面部三维图像的软组织线距和角度测量标志点示意图 1:鼻根点;2:右耳屏点;3:左耳屏点;4:鼻突点;5:鼻小柱点;6:鼻下点;7:右下颌角点;8:左下颌角点;9:右颊点;10:左颊点;11:右口角点;12:左口角点;13:上唇缘点;14:口点;15:下唇缘点;16:唇下点;17:颏前点;18:颏下点
图3 面部三维图像的软组织体积测量区域示意图 A:鼻部,上界鼻根点,下界鼻底,两侧界为内眦与鼻翼点的连线;B:唇部,上界鼻底,两侧界为唇面沟,下以颏唇沟与颏部分界;C:颏部,上界为颏唇沟,两侧界为口角的垂线,下以下颌下缘为界;D:颊部,前界唇部和颏部,后界为咬肌前缘,上邻眶下部和颧部,下界为下颌下缘;E:颧部,上界为颧弓上缘,下界为颧骨下缘,前界为上颌骨颧突根部,后界为颧弓后端发际线;F:颞部,后界为发际,下界为颧弓上缘,前上界为上颞线
表1 面部软组织线距角度标志点、体积区域定义
表2 青少年拔牙与非拔牙矫治前后面部线距变化的比较(mm, ± s
表3 青少年拔牙与非拔牙矫治前后面部角度变化的比较(°, ± s
表4 青少年拔牙与非拔牙矫治前后面部体积变化的比较(cm3 ± s
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