2003, Vol. 5, No. 3
CONTENTS
Pecularities of Generation of Superoxide Anion of Peripheral Blood Leukocytes in Periodontitis
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 
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© 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