Acta Anatomica Sinica ›› 2017, Vol. 48 ›› Issue (6): 715-720.doi: 10.16098/j.issn.0529-1356.2017.06.014

• Anatomy • Previous Articles     Next Articles

Characteristics of Cine-MRI and condylar movement trajectory of asymptomatic subjects with anterior disc displacement of temporomandibular joint

ZHENG Hong1 ZHANG Zhi-guang2 ZHANG Song-mei3 XUE Peng 4*   

  1. 1. Department of Pathophysiology, School of Basic Medical Sciences, He’nan University, He’nan Kaifeng 475004, China; 2.Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Zhongshan University, Guangzhou 510055,China; 3.Department of Prosthodontics, the Ninth People’s hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011,China; 4.National Joint Laboratory for Antibody Drug Development, School of Basic Medical Sciences, He’nan University, He’nan Kaifeng 475004, China
  • Received:2017-04-14 Revised:2017-06-10 Online:2017-12-06 Published:2017-12-06
  • Contact: XUE Peng E-mail:xuepeng1978@googlemail.com

Abstract:

Objective The initial anterior disc displacement with reduction of temporomandibular joint can be asymptomatic, however the condylar movement trajectory can help early detection of occult temporomandibular joint internal disorders. Methods Appling Cine-MRI and ARCUSdigma system to investigate 30 asymptom temporomandibular joints in open-close movement. Results Ten anterior displacement discs were detected in some asymptom temporomandibular joints, temporomandibular joint discs showed biconcave shape in anterior displacement disc with reduction (ADDwR) individuals, but slightly thickness and anterior displacement, disc-condyle position returned to normal during small opening (<2 cm); In the group of anterior disc displacement with reduction without any symptom, the condyle tracking was found bounce, inflexion and asymmetry and some of incisor tracking were smooth and superposition and others showed segregated curves; The range of opening movement and maximal value of condylar movement and incisor movement respectively were (13.6±3.7) mm and (40.5±3.4) mm respectively. Conclusion The condylar movement trajectory could indirectly detect the changes of shapes and position of articular disc of temporomandibular joint during opening movement, which is helpful to diagnosis early ADDwR without symptom.

Key words: Temporomandibular joint, Cine-MRI, ARCUSdigma, Human