中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (31): 4950-4955.doi: 10.3969/j.issn.2095-4344.1465

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

锥形束CT测量分析安氏Ⅲ类错牙合畸形治疗前后颞下颌关节骨性结构的改变

王超然,李志勤,史培良,冯春月,殷  野   

  1. (天津联勤保障部队第九八三医院口腔科,天津市  300142)
  • 收稿日期:2019-04-26 出版日期:2019-11-08 发布日期:2019-11-08
  • 通讯作者: 李志勤,副主任医师,天津联勤保障部队第九八三医院口腔科,天津市 300142
  • 作者简介:王超然,女,1986年生,天津市人,汉族,2016年天津医科大学毕业,硕士,主治医师,主要从事口腔正畸学的研究。

Changes of osseous structure about temporal-mandibular joint pre/post-treatment for Angle III malocclusion through cone-beam computed tomography

Wang Chaoran, Li Zhiqin, Shi Peiliang, Feng Chunyue, Yin Ye   

  1.  (Department of Stomatology, the No. 983 Hospital of Tianjin Joint Logistic Support Force, Tianjin 300142, China)
  • Received:2019-04-26 Online:2019-11-08 Published:2019-11-08
  • Contact: Li Zhiqin, Associate chief physician, Department of Stomatology, the No. 983 Hospital of Tianjin Joint Logistic Support Force, Tianjin 300142, China
  • About author:Wang Chaoran, Master, Attending physician, Department of Stomatology, the No. 983 Hospital of Tianjin Joint Logistic Support Force, Tianjin 300142, China

摘要:

文章快速阅读:

文题释义:

锥形束电子计算机断层扫描(CBCT):口腔领域专属的三维影像检查技术,通过锥形束X射线扫描获得人体牙颌面信息,再由计算机处理,获得三维方向上的多层横断面图像,特别是颞下颌关节、牙体、牙槽骨等硬组织的三维高分辨率图像,不仅可以帮助医生更全面的诊断,也方便科研人员进行更深入和细致的研究。除此之外,患者检查时间较短、所受射线剂量小。
颞下颌关节(TMJ):在人体所有的关节中,此关节的活力量最多,这因为它参与人体每天说话和吃饭的必要活动中,而这些要以动态牙合平衡为基础才能实现。颞下颌关节由关节窝、髁突、关节盘、关节囊、关节韧带等软硬组织共同构成,这些结构在合理形态和位置下通过协同作用才能保证咬合关系的正常表达。
掩饰性治疗:又称代偿性治疗,常用于生长发育高峰期过后轻中度骨性错牙合的矫正。主要是牙齿轴倾度代偿骨骼矢状向问题,垂直向问题的解决方法与常规矫正类似。相对于手术治疗风险较低,轻中度骨性不调患者在对美观要求不高的前提下可以选择此类方法矫治。
摘要
背景
:掩饰性治疗安氏Ⅲ类前后颞下颌关节的变化特点尚无较多研究报道。
目的:运用锥形束CT(CBCT)测量分析安氏Ⅲ类错牙合畸形患者治疗前后颞下颌关节的骨性结构改变。
方法:研究方案的实施符合天津医科大学口腔医院对研究的相关伦理要求。选取符合纳入标准的安氏Ⅲ类错牙合患者30例,初诊年龄平均(16.5±2.6)岁,均为汉族。所有受试者及监护人对试验过程完全知情同意。所有患者均采用固定矫治器矫正,配合Ⅲ类牵引及摇椅弓治疗,于治疗前后拍摄CBCT影像,在重建后的图像下进行测量分析。比较治疗前后患者的关节窝形态、髁突形态、髁突轴向、髁突生长量的差异。
结果与结论:①治疗后的安氏Ⅲ类错牙合患者的关节结节倾斜角、关节窝深度、髁突矢状面倾斜角及髁突长轴比治疗前增大,髁突上部高度减小,髁突位置更靠后,且以上变化差异均有显著性意义(P < 0.05);②髁突短轴及轴面倾斜角的前后变化差异无显著性意义(P > 0.05),但髁突短轴有增大的趋势,髁突轴面倾斜角有减小的趋势;③结果说明,安氏Ⅲ类错牙合患者颞下颌关节治疗前后的形态结构有所差异。

关键词: CBCT, 锥形束CT, 安氏Ⅲ类, 错牙合, 颞下颌关节, 掩饰性治疗

Abstract:

BACKGROUND: The changes of temporal-mandibular join before and after compensatory correction about Angle class III malocclusion are rarely reported.
OBJECTIVE: To investigate the changes of osseous structure about temporal-mandibular joint pre/post-treatment for Angle III malocclusion through cone-beam CT (CBCT).
METHODS: The study was in accordance with the ethical requirements of School of Stomatology of Tianjin Medical University. Thirty eligible Han patients with Angle class III malocclusion were enrolled, with the age of (16.5±2.6) years. All patients and their guardians signed the informed consents. The patients were treated by fixed appliance and class III traction and rocking-chair archwire. CBCT was conducted before and after treatment. CBCT data were measured and analyzed with the reconstructing image for comparing the glenoid morphology, condylar morphology, condylar axial and condylar growth.
RESULTS AND CONCLUSION: (1) The joint nodules angle, condylar sagittal angle, articular fossa depth and condylar macroaxis angle were increased, the upper part of condyle was reduced and condylar process moved rearwards in patients with Angle III malocclusion after treatment (P < 0.05). (2) The difference of condylar minor axis and condylar inclination angle on coronal plane had no significant difference (P > 0.05), but condylar minor axis had increased tendency and condylar inclination angle on axial surface had decreased tendency. (3) To conclude, the morphology of temporal-mandibular joint in patients with class III malocclusion Angle pre/post-treatment is different to some extent.

Key words: CBCT, cone-beam CT, Angel class III maloclussion, temporal-mandibular joint, compensatory correction

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