Cederberg R A
Division of Oral and Maxillofacial Radiology, Department of Diagnostic Sciences, Baylor College of Dentistry, Dallas, Texas.
Cranio. 1994 Jul;12(3):172; discussion 177-8. doi: 10.1080/08869634.1994.11678015.
Radiographic interpretation of the temporomandibular joint (TMJ) frequently revolves around a determination of condyle concentricity. The purpose of this study was to establish the relationship between actual and radiographic joint space, the latter determined from lateral corrected tomograms made by a Soredex Scanora. Vacuum-formed shims were placed over the condylar heads of a human skull and tomographic images of the TMJs were made. These shims were measured using a caliper and the mean thickness was used to represent actual joint space. Thickness of the shims fabricated for the right condyle varied from .15 mm (1 shim) to 1.60 mm (5 shims). The resulting radiographs were measured to determine the extent to which actual and radiographic joint space compared.
颞下颌关节（TMJ）的影像学解读常常围绕髁突同心度的判定展开。本研究的目的是确定实际关节间隙与影像学关节间隙之间的关系，后者是通过Soredex Scanora制作的经校正的颞下颌关节侧位断层扫描图像得出的。将真空成型垫片置于人类颅骨的髁突头上，并制作颞下颌关节的断层图像。使用卡尺测量这些垫片，并将平均厚度用于代表实际关节间隙。为右侧髁突制作的垫片厚度从0.15毫米（1个垫片）到1.60毫米（5个垫片）不等。对所得的X线片进行测量，以确定实际关节间隙与影像学关节间隙的对比程度。
