www.sbdmj.com - Stomatologija - Baltic Dental and Maxillofacial Journal

Summary

Objectives. To describe the prevalence of internal derangement of the temporomandibular joint (TMJ) in subjects from a population representative cross-sectional study through the distribution of frequency of the data obtained from MRI findings.

Material and methods. 114 subjects with at least one sign of temporomandibular disorders (tenderness/pain on palpation of the joints or muscles, TMJ sounds, pain or deviation during maximum mouth opening (active/passive)) and 193 controls underwent MRI after proper history taking and assessment of clinical symptoms.

Results. 464 joints with no disk displacement (NDD), 114 joints with reducible displaced disk (RDD), and 36 joints with permanently displaced disk (PDD) were confirmed on magnetic resonance imaging (MRI). Pathological TMJ states such as partially and medially disk displacement with complete reposition and retroplaced condyle were the most frequent forms of the internal derangement of the temporomandibular joint.

Conclusion. The results of this study confirm the concept that musculoskeletal abnormality may not be related to patients’ symptoms.

Key words: temporomandibular joint; temporomandibular disorders; internal derangement; clinical examination; magnetic resonance imaging.

Received: 15 11 2004

Accepted for publishing: 22 12 2004

¹Institute of Odontology, Faculty of Medicine, Vilnius University, Lithuania.

²Department of Restorative Dentistry, Periodontology and Pediatric Dentistry, University of Greifswald, Germany.

³Department of Periodontology and Pediatric Dentistry, University of Greifswald, Germany.

Giedre Kobs¹ - D.D.S., PhD.

Olaf Bernhardt² - D.D.S., PhD, assistant professor, assistant medical director.

Thomas Kocher³ - D.D.S., PhD, dr.hab.med., professor and Head of Department.

George Meyer² - D.D.S., PhD, dr.hab.med., professor and Head of Department.

Address correspondence to dr.Giedre Kobs, Institute of Odontology, Zalgirio 115, Vilnius, Lithuania.



	Baltic Dental and Maxillofacial Journal

December, 2004, Vol. 6, No. 4 CONTENTS SCIENTIFIC ARTICLES Magnetic Resonance Imaging Findings of the Temporomandibular Joint Internal Derangement in a Non-patient Population 99 - 102 Assessment of Complete Cleft (CLP) Patients’ Occlusion at Age of Five 103 - 105 Traumatic Damage to the Inferior Alveolar Nerve Sustained in Course of Dental Implantation. Possibility of Prevention 106 - 110 Periodontal Status in Population of Belarus 111 - 113 Modulatory Effect of Ammonium Ions on Human Neutrophil Oxidative Burst in Response to Bacterial Stimuli 114 - 117 Dental Fear Among Teenagers. Individual Anxiety Factors 118 - 121 Damage of Inferior Alveolar Nerve in Mandible Fracture Cases 122 - 125 © 2004 Stomatologija		Stomatologija 2004; 6 (4): 99-102 164 KB Magnetic Resonance Imaging Findings of the Temporomandibular Joint Internal Derangement in a Non-patient Population Giedre Kobs, Olaf Bernhardt, Thomas Kocher, Georg Meyer Summary Objectives. To describe the prevalence of internal derangement of the temporomandibular joint (TMJ) in subjects from a population representative cross-sectional study through the distribution of frequency of the data obtained from MRI findings. Material and methods. 114 subjects with at least one sign of temporomandibular disorders (tenderness/pain on palpation of the joints or muscles, TMJ sounds, pain or deviation during maximum mouth opening (active/passive)) and 193 controls underwent MRI after proper history taking and assessment of clinical symptoms. Results. 464 joints with no disk displacement (NDD), 114 joints with reducible displaced disk (RDD), and 36 joints with permanently displaced disk (PDD) were confirmed on magnetic resonance imaging (MRI). Pathological TMJ states such as partially and medially disk displacement with complete reposition and retroplaced condyle were the most frequent forms of the internal derangement of the temporomandibular joint. Conclusion. The results of this study confirm the concept that musculoskeletal abnormality may not be related to patients’ symptoms. Key words: temporomandibular joint; temporomandibular disorders; internal derangement; clinical examination; magnetic resonance imaging. Received: 15 11 2004 Accepted for publishing: 22 12 2004 ¹Institute of Odontology, Faculty of Medicine, Vilnius University, Lithuania. ²Department of Restorative Dentistry, Periodontology and Pediatric Dentistry, University of Greifswald, Germany. ³Department of Periodontology and Pediatric Dentistry, University of Greifswald, Germany. Giedre Kobs¹ - D.D.S., PhD. Olaf Bernhardt² - D.D.S., PhD, assistant professor, assistant medical director. Thomas Kocher³ - D.D.S., PhD, dr.hab.med., professor and Head of Department. George Meyer² - D.D.S., PhD, dr.hab.med., professor and Head of Department. Address correspondence to dr.Giedre Kobs, Institute of Odontology, Zalgirio 115, Vilnius, Lithuania.