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Natural Course of Untreated Symptomatic Temporomandibular Joint Disc Displacement without Reduction
K. Kurita
The Second Department of Oral and Maxillofacial Surgery, School of Dentistry, Aichi-Gakuin University, 2-11 Suemori, Chikusaku, Nagoya, 464, Japan
P.-L. Westesson
Department of Radiology, University of Rochester, New York
H. Yuasa
Department of Oral and Maxillofacial Radiology, School of Dentistry, Aichi-Gakuin University
M. Toyama
Department of Oral and Maxillofacial Radiology, School of Dentistry, Aichi-Gakuin University
J. Machida
Department of Oral and Maxillofacial Radiology, School of Dentistry, Aichi-Gakuin University
N. Ogi
The Second Department of Oral and Maxillofacial Surgery, School of Dentistry, Aichi-Gakuin University, 2-11 Suemori, Chikusaku, Nagoya, 464, Japan
In some patients with disc displacement without reduction, the symptoms of pain and decreased range of motion have been observed to resolve spontaneously over time without treatment. The natural history of this condition, however, is not well-understood. Thus, to study the natural course of disc displacement without reduction, we followed 40 patients without treatment for a period of 2.5 years. The diagnosis was established by history and physical examination and confirmed with magnetic resonance (MR) imaging. After 2.5 years, 43% of the patients were asymptomatic, 33% had decreased symptoms, and 25% of the patients showed no improvement or had required treatment. MR evidence of osteoarthritis and advanced stages of internal derangement at the initial evaluation was associated with a poor prognosis. The result of this prospective cohort study indicated that approximately 40% of patients with symptomatic disc displacement without reduction will be free of symptoms within 2.5 years, one-third will improve, whereas one-quarter will continue to be symptomatic. This knowledge should be valuable for the treatment planning and evaluation of prognosis of patients with non-reducing symptomatic disc displacement.
Key Words: temporomandibular joint • disc displacement without reduction • internal derangement • osteoarthritis • natural course.
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Journal of Dental Research, Vol. 77, No. 2,
361-365 (1998)
DOI: 10.1177/00220345980770020401
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