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Abstract
This retrospective series was intended to determine whether morphological disk findings in open and closed mouth magnetic resonance imaging (MRI) may be correlated with the time curves in axiography. In this series, 45 temporomandibular joints of 33 patients were subjected to a retrospective evaluation. Magnetic resonance images obtained with closed and open mouth and joint movements assessed by electronic axiography were analyzed. Disk morphology in MRI was classified as normal, partly flattened, partly thickened, or completely thickened. For the axiographic tracings, time curves of the free movements of the respective joint were developed and evaluated. Data obtained were analyzed for any potential correlation using scatter plots and discriminance analysis. No correlation between these data was found suggesting that the axiographic time curves do not provide for any conclusions with regard to disk morphology. Apart from patient history and a thorough clinical evaluation, recording of jaw movements, but also using MRI continues to be of particular value in the diagnostic assessment of anterior disk displacement.
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Notes on contributors
Martina Schmid-Schwap
Dr. Martina Schmid-Schwap received her M.D. degree from the University of Vienna in 1991, and a D.D.S. degree from the Dental School at the University of Vienna in 1995. Since 1995, she has been in practice at the Dental Clinic in the Department of Removable and Fixed Prosthodontics at the University of Vienna. She is actively involved in the management of TMD patients and is a lecturer of several prosthetic courses. She has been conducting scientific studies at the Dental Clinic of the University of Vienna, Department of Prosthodontics since 1992.
Johann Gerold Briedl
Dr. Johann Gerold Briedl studied medicine at the University of Vienna and earned his M.D. degree in 1992. He continued his education in Salzburg and became a general practitioner in 1996. He worked for one year as an assistant in the Department of Neurology, University of Innsbruck. Dr. Briedl attended the postgraduate dental education program at the Dental Clinic of the University of Vienna and received a D.D.S. degree in 2001. Since 2001, he has been working in private practice and also at the dental unit provided by the government insurance in Upper Austria. Currently, he is employed with the dental unit provided by the government health insurance in Salzburg.
Soraya Robinson
Dr. Soraya Robinson received her M.D. degree from the University of Vienna in 1988. From 1988 to 1989, she worked at the Department of Radiology at the Pediatric Clinic, University of Vienna and from 1989 to 2001, she worked at the Department of Radiology at the same university. Dr. Robinson received her specialty degree in radiology in 1996. In 2002, she qualified as a university lecturer at theUniversity of Vienna. Currently, she is employed at the Department of Radiology, Helsinki University Central Hospital.
Eva Piehslinger
Dr. Eva Piehslinger received her M.D. degree from the University of Vienna in 1986. During her medical studies, she worked for seven years as an assistant at the Anatomical Institute of the University of Vienna. Following medical school, she received a D.D.S. degree from the Dental School at the University of Vienna. From 1989 to 1997, she was in practice at the Dental Clinic. Since 1997, Dr. Piehslinger has been the head of the Department of Removable and Fixed Prosthodontics at the Dental School at the University of Vienna and she received a full professorship in 1999.