Hausmann E, Ortman L F, McHenry K, Fallon J
J Periodontol. 1982 May;53(5):307-10. doi: 10.1902/jop.1982.53.5.307.
PREVIOUS STUDIES have shown that 125I absorptiometry gives an accurate and sensitive measure of alveolar bone mass. The purpose of this study was to determine the relationship between alveolar bone mass determined by 125I absorptiometry and bone density obtained by analysis of standardized intraoral radiographs by the Magiscan System. A defect of increasing size was made at one site of the alveolar bone in a human skull. The amount of bone remaining at each step was calculated using 125I absorptiometry. Standardized radiographs were also taken at each step and the relative density in the area of the defect was determined by the Magiscan System. The Magiscan's System Computer Memory permits analysis of identical areas on a longitudinal series of films of the same alveolar bone location. The results indicate that in estimating amounts of alveolar bone the Magiscan analysis of standardized intraoral radiography is similar in sensitivity and accuracy to 125I absorptiometry.
以往的研究表明，¹²⁵I吸收测定法能准确、灵敏地测量牙槽骨量。本研究的目的是确定¹²⁵I吸收测定法所测定的牙槽骨量与通过Magiscan系统分析标准化口腔内X光片所获得的骨密度之间的关系。在一个人类颅骨的牙槽骨的一个部位制造一个尺寸不断增大的缺损。使用¹²⁵I吸收测定法计算每一步剩余的骨量。每一步还拍摄标准化X光片，并由Magiscan系统确定缺损区域的相对密度。Magiscan系统计算机内存允许对同一牙槽骨位置的纵向系列胶片上的相同区域进行分析。结果表明，在估计牙槽骨量时，标准化口腔内X光片的Magiscan分析在灵敏度和准确性方面与¹²⁵I吸收测定法相似。
