Evaluation of the condylar movement on MRI during maximal mouth opening in patients with internal derangement of TMJ: comparison with transcranial view.
- Author:
Bong Hae CHO
1
Author Information
1. Department of Oral and Maxillofacial Radiology, School of Dentistry, Pusan National University, Korea. bhjo@pusan.ac.kr
- Publication Type:Original Article
- Keywords:
temporomandibular joint disk;
magnetic resonance imaging;
mandibular condyle
- MeSH:
Humans;
Magnetic Resonance Imaging*;
Mandibular Condyle;
Mouth*;
Temporomandibular Joint Disc;
Temporomandibular Joint*
- From:Korean Journal of Oral and Maxillofacial Radiology
2001;31(4):185-192
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate the condylar movement at maximal mouth opening on MRI in patients with internal derangement. MATERIALS AND METHODS: MR images and transcranial views for 102 TMJs in 51 patients were taken in closed and maximal opening positions, and the amount of condylar movement was analyzed quantitatively and qualitatively. RESULTS: For MR images, the mean condylar movements were 9.4 mm horizontally, 4.6 mm vertically and 10.9 mm totally, while those for transcranial views were 12.5 mm, 4.6 mm, and 13.7 mm respectively. The condyle moved forward beyond the summit of the articular eminence in 41 TMJs (40.2%) for MR images and 56 TMJs (54.9%) for transcranial views. CONCLUSION: The horizontal and total condylar movements were smaller in MR images than in transcranial views.
