Purpose:To study the value of three-dimensional CT(3D-CT)and analyze the advantage and shortcome of ordinary X-ray film, two-dimensional CT(2D-CT), in the diagnosis of mandibular condyle diseases.
目的：探索三维CT在髁状突病变中的应用价值，分折其与常规X线和二维CT间的优缺点。
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Materials and Methods: Compared the signs of ordinary X-ray film, 2d-ct and 3d-ct with the operation and pathology of 20 cases of the mandibular condyle diseases.