中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (12): 1811-1816.doi: 10.3969/j.issn.2095-4344.0197

• 口腔组织构建 oral tissue construction • 上一篇    下一篇

MRI评价安氏Ⅰ类和Ⅱ类成年男性下颌逐步前伸中颞下颌关节盘的组织结构变化

唐  倩1,方志欣1,周  嫣1,白  彬2,黄敏方1   

  1. 1广西壮族自治区人民医院口腔正畸科,广西壮族自治区南宁市  530021;2柳州市工人医院,广西壮族自治区柳州市  545000
  • 收稿日期:2018-02-06 出版日期:2018-04-28 发布日期:2018-04-28
  • 通讯作者: 方志欣,硕士,主任医师,研究生导师,广西壮族自治区人民医院口腔正畸科,广西壮族自治区南宁市 530021
  • 作者简介:唐倩,女,1989年生,广西壮族自治区桂平市人,汉族,2015年广西医科大学毕业,硕士,医师,主要从事正畸临床研究。
  • 基金资助:

    广西医疗卫生适宜技术研究与开发课题(桂卫S201315-02);广西科技攻关项目(桂科攻1140003B-72)

A magnetic resonance imaging study to compare structural changes of the temporomandibular joint disk during mandibular advancement between Angle Class I and Class II in adult males

Tang Qian1, Fang Zhi-xin1, Zhou Yan1, Bai Bin2, Huang Min-fang1   

  1. 1Department of Orthodontics, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi Zhuang Autonomous Region, China; 2Liuzhou Worker’s Hospital, Liuzhou 545000, Guangxi Zhuang Autonomous Region, China
  • Received:2018-02-06 Online:2018-04-28 Published:2018-04-28
  • Contact: Fang Zhi-xin, Master, Chief physician, Master’s supervisor, Department of Orthodontics, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi Zhuang Autonomous Region, China
  • About author:Tang Qian, Master, Physician, Department of Orthodontics, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi Zhuang Autonomous Region, China
  • Supported by:

    the Guangxi Medical and Health Proper Technology Research and Development Project, No. S201315-02; the Science and Technology Research & Development Program of Guangxi Zhuang Autonomous Region, No. 1140003B-72

摘要:

文章快速阅读:

文题释义:
下颌前伸与颞下颌关节盘:口腔矫治器治疗阻塞性睡眠呼吸暂停低通气综合征的主要原理是在夜间睡眠时使患者的下颌处于前伸位,有效扩大上气道,从而改善患者的憋气症状,提高睡眠质量。戴用口腔矫治器治疗时,由于下颌骨的前伸,必将对颞下颌关节产生一个非正常生理性的牵张应力,从而导致关节盘组织结构的适应性反应。关节盘是颞下颌关节的重要组织结构,若其发生病理性改变,对颞下颌关节的正常生理和功能将造成严重影响。
颞下颌关节的MRI检查:MRI三维影像技术能清晰显示关节各软硬组织的形态和结构,尤其是关节盘可以清晰成像,这是其他X射线三维影像诊断技术无法达到的,被称为是诊断颞下颌关节疾病的“金标准”。同时,MRI技术还可以进行关节运动的动态观察及关节韧带、肌肉等的研究,是临床中探讨颞下颌关节组织结构的生理及病理变化的重要手段。

摘要
背景:
下颌前伸式口腔矫治器对轻、中度阻塞性睡眠呼吸暂停低通气综合征患者疗效较好。但戴用下颌前伸式矫治后,下颌处于非正常生理位,必然会对颞下颌关节产生影响,关节盘是颞下颌关节的重要组织结构,那么下颌前伸时关节盘组织结构将发生怎样的变化,这些变化是否会对颞下颌关节造成损害?同时安氏Ⅰ类和Ⅱ类人群的颞下颌关节结构是否有差异,在下颌前伸过程中2种不同骨面型的颞下颌关节结构将发生怎样的变化,其发生的规律是否相同,此方面尚缺乏系统研究。
目的:比较分析下颌逐步前伸过程中安氏Ⅰ类个别正常牙合及安氏Ⅱ类错牙合成年男性颞下颌关节盘组织的结构变化及其差异。
方法:将40例成年无鼾男性志愿者,按安氏分类及矢状骨面型将其分为Ⅰ类组和Ⅱ类组,每组各20例。每位志愿者分别于正中咬合位(F0)、下颌最大前伸位的75%位(F75)及下颌最大前伸位(F100)进行颞下颌关节的MRI扫描。利用MRI影像对2组志愿者不同下颌前伸位时关节盘组织的相关指标进行测量和计算,并对其进行统计分析。
结果与结论:①在F0位,安氏Ⅱ类组关节盘前移位发生率大于安氏Ⅰ类组(P < 0.01);②两组盘髁角度随下颌前伸均减小(P < 0.01);③安氏Ⅰ类及Ⅱ类组均表现为关节盘旋转角度从F0至F100位大于从F0至F75位,差异有显著性意义(P < 0.05);④安氏Ⅰ类个别正常牙合和安氏Ⅱ类错牙合成年男性颞下颌关节盘组织结构存在差异。适度的下颌前伸对原有关节盘前移位者可产生积极作用,但下颌过度前伸则可能对颞下颌关节盘造成危害。

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
ORCID: 0000-0002-2544-6258(方志欣)

关键词: 阻塞性睡眠呼吸暂停低通气综合征, 口腔矫治器, 下颌前伸, 颞下颌关节盘, 磁共振成像, 安氏Ⅱ类错牙合, 组织构建, 关节盘旋转角, 颞下颌关节紊乱

Abstract:

BACKGROUND: Mandibular advancement devices are commonly used in patients with mild to moderate obstructive sleep apnea hypopnea syndrome. But wearing with mandibular protraction appliance makes the mandible in an abnormal position, and inevitably affects the temporomandibular joint (TMJ). As one of the important components of the TMJ, can structural changes of the joint disk impair the TMJ? Are there any differences in the TMJ structure between Angle Class I and Class II? What will happen to the TMJ structure in the Angle Class I and Class II during mandibular advancement? Is there a same law of TMJ changes for Angle Class I and Class II? All of these are undetermined systematically.
OBJECTIVE: To compare the changes in the structure of TMJ disk and the differences during mandible advancement between Angle Class I and Class II adult males.
METHODS: Forty non-apnea adult males were divided into two groups (n=20 per group), including Class I and Class II groups, according to the Angle’s classification and sagittal skeletal facial type. Each volunteer was scanned by MRI in three positions, including central occlusion (F0), 75% of the maximum mandible advancement (F75) and maximum of the mandible advancement (F100). These indexes that were correlated with morphology of the joint disk in different mandible advancement positions were measured and calculated by MRI, and then analyzed statistically.
RESULTS AND CONCLUSION: In F0, the ratio of disk anterior displacement in the Class II group was higher than that in the Class I group (P < 0.01). The angle A was decreased as the mandible advanced in both groups from F0 to F75 (P < 0.01). The rotational angular dimension was increased as the mandible advanced, and the sizes from F0 to F100 were bigger than those from F0 to F75 (P < 0.05). Some differences existed in the structure of TMJ disk between Angle Class I and II adult males. In summary, appropriate mandibular advancement may play a positive role in patients with anterior displacement of the joint disk, but excessive mandible advancement is likely to impair the TMJ disk.

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

Key words: Temporomandibular Joint, Temporomandibular Joint Disk, Orthopedic Fixation Devices, Tissue Engineering

中图分类号: