China Journal of Oral and Maxillofacial Surgery ›› 2016, Vol. 14 ›› Issue (1): 14-18.

• Original Articles • Previous Articles     Next Articles

3D-measurement of temporomandibular joint morphology and preliminary use in osteoarthritis

BAI Guo1, HE Dong-mei1, YANG Chi1, ZHANG Lu-zhu1, WANG Fei-yu1, DONG Min-jun2, CHANG Yu-si1   

  1. 1.Department of Oral Surgery, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; Shanghai Key Laboratory of Stomatology. Shanghai 200011;
    2. Department of Radiology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine. Shanghai 200011, China
  • Received:2015-03-18 Online:2016-01-20 Published:2016-02-01

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Abstract: PURPOSE : To establish a new 3D-measurement method of temporomandibular joint (TMJ) and make comparison of TMJ osseous morphology of the affected and contralateral side in patients with unilateral osteoarthritis, and preliminarily study TMJ osseous remodeling of the affected side. METHODS : Patients who were diagnosed with unilateral TMJ osteoarthritis and needed total replacement surgery from Mar. 2005 to Dec. 2014 were included in this study. Physical examination and TMJ magnetic resonance image (MRI) were taken to ensure the contralateral joint was healthy. Cranial-maxillofacial computed tomography (CT) of each patient was taken and imported into Proplan CMF 1.4 software to reconstruct the skull and a new 3D-measurement method of TMJ osseous morphology was established. Paired t test was used to evaluate the difference between the affected and contralateral side in patients with unilateral osteoarthritis using SAS 6.1 software package. RESULTS : The lateral depth of glenoid fossa, the sagittal diameter of condyle, the height condylar head, the width of zygomatic arch and the length of ramus on the affected side were significantly different from the contralateral side (P<0.05). However, the medially inclining angle of condyle, the retrally leaning angle of condyle, the sagittal diameter and horizontal diameter of glenoid fossa, the anterior slope angle of glenoid fossa, the height of articular eminence, the thickness of zygomatic arch, the width of anterior and posterior slope of condyle, the sagittal diameters of condyle and condylar neck on the affected side all showed no significant differences from the contralateral side (P>0.05). CONCLUSIONS : The 3D-measurement method of osseous morphology of TMJ was built, which provided the anatomy reference for design of TMJ prosthesis. The preliminary RESULTS of comparison between the affected and contralateral side in unilateral osteoarthritis patients showed that the affected side had a relatively flat glenoid fossa and less condylar head height as well as ramus length than the healthy side.

Key words: Temporomandibular joint, Osseous morphology, 3-D measurement, Osteoarthritis

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