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中华口腔医学研究杂志(电子版) ›› 2020, Vol. 14 ›› Issue (04) : 235 -239. doi: 10.3877/cma.j.issn.1674-1366.2020.04.006

所属专题: 文献

临床研究

青少年骨性Ⅱ类高角错患者颞下颌关节形态的锥形束CT研究
周炼1,(), 张东强1, 徐海涛1   
  1. 1. 东莞健力口腔医院正畸科 523800
  • 收稿日期:2020-02-08 出版日期:2020-08-01
  • 通信作者: 周炼

A CBCT study on the morphology of the temporomandibular joint of skeletal classⅡ malocclusion adolescents with hyperdivergent pattern

Lian Zhou1,(), Dongqiang Zhang1, Haitao Xu1   

  1. 1. Department of Orthodontics, Jianli Stomatological Hospital of Dongguan, Dongguan 523800, China
  • Received:2020-02-08 Published:2020-08-01
  • Corresponding author: Lian Zhou
  • About author:
    Corresponding author: Zhou Lian, Email:
  • Supported by:
    Social Science and Technology Development Program of Dongguan(201950715058600)
引用本文:

周炼, 张东强, 徐海涛. 青少年骨性Ⅱ类高角错患者颞下颌关节形态的锥形束CT研究[J]. 中华口腔医学研究杂志(电子版), 2020, 14(04): 235-239.

Lian Zhou, Dongqiang Zhang, Haitao Xu. A CBCT study on the morphology of the temporomandibular joint of skeletal classⅡ malocclusion adolescents with hyperdivergent pattern[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2020, 14(04): 235-239.

目的

探讨青少年骨性Ⅱ类高角错患者的颞下颌关节形态特征及其颞下颌关节随生长改建的相关规律。

方法

采用回顾性研究,从2015年1月至2019年10月于东莞健力口腔医院正畸科就诊并拍摄锥形束CT(CBCT)的患者中选择符合纳入标准的青少年骨性Ⅱ类高角组52例、青少年正常对照组54例与成人骨性Ⅱ类高角组患者50例,在牙尖交错位进行CBCT扫描,利用NNT viewer 5.1软件对颞下颌关节进行三维重建,测量髁突形态、关节窝形态与关节间隙等11项指标,运用独立样本t检验分别比较青少年骨性Ⅱ类高角组与青少年正常对照组、青少年骨性Ⅱ类高角组与成人骨性Ⅱ类高角组在上述指标上的差异。

结果

与青少年正常对照组相比,青少年骨性Ⅱ类高角组的髁突外形更小,髁突倾斜角更大,关节前间隙、关节上间隙与关节结节后斜面角度更小(P<0.001)。与成人骨性Ⅱ类高角组相比,青少年骨性Ⅱ类高角组的髁突内外径、前后径与高度更小,关节窝深度与宽度更小(P<0.001)。

结论

青少年骨性Ⅱ类高角组与青少年正常对照角组在髁突形态及位置、关节窝形态上均存在一定程度差异;随年龄增大,骨性Ⅱ类高角患者的颞下颌关节形态增大,但盘突关系及生长型稳定。

Objective

To investigate the characteristics of morphology and growth-associated remodeling of the temporomandibular joint of skeletal classⅡ malocclusion adolescents with hyperdivergent pattern.

Methods

A retrospective study was conducted with 52 skeletal classⅡ malocclusion adolescents with hyperdivergent pattern, 54 normal control adolescents and 50 skeletal class Ⅱ malocclusion adults with hyperdivergent pattern selected from the patients who visited the department of orthodontics of Jianli Stomatological Hospital of Dongguan between January 2015 and October 2019. CBCT scans were acquired in centric occlusion. NNT viewer 5.1 software was used to rebuild 3D image data of the temporomandibular joint. 11 items related with the morphology of the condyle, the morphology of the glenoid fossa and the TMJ space were compared between the skeletal class Ⅱ malocclusion adolescents with hyperdivergent pattern and normal control adolescents, and between the adolescents and adults with skeletal class Ⅱ malocclusion and hyperdivergent pattern using the independent sample t test.

Results

Compared with the normal control adolescents, the condyles of the skeletal class Ⅱ malocclusion adolescents with hyperdivergent pattern were smaller, shorter, tipped more anteriorly and positioned more anteriorly, angles of the posterior wall of articular tubercle were smaller (P<0.001) . Compared with the skeletal class malocclusion adults with hyperdivergent pattern, the condyles of the skeletal class Ⅱ malocclusion adolescents with hyperdivergent pattern were smaller and shorter, and the depth and the width of the glenoid fossa were narrower (P<0.001) .

Conclusions

Skeletal class Ⅱ malocclusion adolescents with hyperdivergent pattern have different forms and positions of condyle, forms of glenoid fossa compared with normal control adolescents. With the increase of the ages, the forms of the condyle and the widths of glenoid fossa of skeletal class Ⅱ malocclusion patients with hyperdivergent pattern increase, while the positions of the condyle and the growth pattern remain stable.

图1 颞下颌关节轴面测量项目 ML:髁突内外径;AP:髁突前后径;AC:髁突冠状面水平角
图2 颞下颌关节矢状面测量项目 A:髁突与关节窝相关长度测量,HC为髁突高度,DF为关节窝深度,WF为关节窝宽度;B:髁突与关节窝相关角度测量,AT为关节结节后斜面斜度,AI为髁突倾斜角;C:关节间隙测量,AS为关节前间隙,SS为关节上间隙,PS为关节后间隙
表1 青少年骨性Ⅱ类高角组与青少年正常对照组颞下颌关节测量数据统计结果( ± s
表2 青少年骨性Ⅱ类高角组与青少年正常对照组髁突位置分布[n(%)]
表3 青少年骨性Ⅱ类高角组与成人骨性Ⅱ类高角组颞下颌关节测量数据统计结果( ± s
表4 青少年骨性Ⅱ类高角组与成人骨性Ⅱ类高角组髁突位置分布[n(%)]
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