Baltic Dental and Maxillofacial Journal
Main page Back issues Editorial board Information

2003, Vol. 5, No. 3

CONTENTS

Biological Response to Dental Implant Loading / Overloading. Implant Overloading: Empiricism or Science?

Pecularities of Generation of Superoxide Anion of Peripheral Blood Leukocytes in Periodontitis

Magnetic Resonance Evaluation Between the Relationship of the Temporomandibular Joint Disk and condylar Head Displacement

The prevalence of gingivitis among 4-16 year old schoolchildren in Kaunas

New Acid Etched Titanium Dental Implant Surface

Health Behaviour among Students of Kaunas Universities: Dental Health and Oral Hygiene

Rostock - Riga Symposium 2003. Abstracts 230 KB

© 2003, Stomatologija

Stomatologija 2003; 5 (3): 93-96 213 KB

Magnetic Resonance Evaluation Between the Relationship of the Temporomandibular Joint Disk and condylar Head Displacement

Giedre Kobs, Olaf Bernhardt, Georg Meyer

Summary

Objectives: To examine the relationship between condylar position and disk displacement in the temporomandibular joint (TMJ).

Methods: 564 joints with no disk displacement (NDD), 114 joints with reducible displaced disk (RDD) and 36 joints with permanently displaced disk (PDD) were diagnosed. The assessment of the condyle and TMJ disk positions was based on the sagittal plane magnetic resonance (MR) images (the position of the disk was controlled by coronal images).

Results: There were significant differences in condyle position between the joints with NDD and RDD (χ²-test, P<0,000), while there was no difference between those with NDD and PDD (χ²-test, right: P=0,112; left: P=0,225). There was also a significant correlation between bilateral condylar position and disk displacement in the TMJ (χ²-test, P<0,000).

Conclusions: We suggest that if the disk displacement is reducible, the condyle is displaced posteriorly: in joints with PDD the condyle returns to the concentric position. These data also suggest that any change in condylar position induced by a change on the opposite side was essential.

Keywords: magnetic resonance imaging; temporomandibular joint disk; temporomandibular joint disorders; temporomandibular joint dysfunction

Address correspondence to G. Kobs: Department of Prosthodontics, Institute of Stomatology Faculty of Medicine, Vilnius University, Zalgirio str.117, Vilnius, Lithuania.

Received: 22 08 2003

Accepted for publishing: 27 09 2003