Clinical evaluation of single contrast computed tomography of the temporomandibular joint.

概要

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It is important to appreciate soft tissue pathology in making a diagnosis of temporomandibular joint (TMJ) disease. For this purpose, contrast arthrography has been introduced.<BR>In addition, X-ray Computed Tomography (CT) which can clearly delineate both hard and soft tissues, has been used for the diagnosis of TMJ disease, especially after the introducution of direct sagittal computed tomography of the head. But up to the present, it has been difficult to demonstrate the articular disc with the use of X-ray CT.<BR>In this investigation, we attempted to demonstrate the articular disc by direct sagittal computed tomography with single contrast arthrography in which we injected air as a negative contrast medium into the upper joint space of the TMJ.<BR>As a result, soft tissues including the articular disc were shown clearly. We can obtain different images from the same scanning data by image processing. One is suitable for demonstrating bony tissusses and another is suitable for demonstrating soft tissues. W e conclude that our method is useful in the diagnosis of TMJ diseases.
特定非営利活動法人日本口腔科学会の論文