Department of Medical Physics, Faculty of Medicine, University of Crete, P.O. Box 2208, Iraklion 71003, Crete, Greece.
Phys Med. 2011 Jan;27(1):39-43. doi: 10.1016/j.ejmp.2010.03.002. Epub 2010 Mar 31.
The purpose of this study was to investigate whether panoramic mandibular indices i.e. mandibular cortical width (MCW), alveolar bone resorption degree (M/M ratio) and panoramic mandibular index (PMI) can be used as pre-selection tests to identify women with low bone mineral density (BMD) at the axial skeleton. MCW, PMI and M/M ratio were measured on dental panoramic radiographs in a group of 151 postmenopausal women aged 38-80 years. BMD at the lumbar spine and hip was measured by dual energy X-ray absorptiometry. BMD values were categorized as normal, osteopenic or osteoporotic according to the WHO classification. ROC analysis was used to determine cut-off values for MCW. MCW performed better than PMI and M/M ratio in its power to differentiate women with osteopenia or osteoporosis from healthy subjects. Cut-off values for the MCW estimated to detect women with T-score < -1 and those with T-score ≤ -2.5 identified a total of 45% and 34% of subjects respectively. Sensitivity and specificity was found to be low ranging between 55 and 70 for both cut-off values. Panoramic indices appear to have limited power in their ability to identify women with low BMD at the axial skeleton.
本研究旨在探讨全景下颌指数（即下颌皮质骨宽度（MCW）、牙槽骨吸收程度（M/M 比值）和全景下颌指数（PMI））是否可用作预选测试，以识别轴向骨骼中骨密度（BMD）较低的女性。在一组年龄在 38-80 岁的绝经后女性的口腔全景片上测量 MCW、PMI 和 M/M 比值。通过双能 X 射线吸收法测量腰椎和髋部的 BMD。根据世界卫生组织的分类，BMD 值分为正常、骨质疏松或骨质疏松症。使用 ROC 分析确定 MCW 的截断值。MCW 在区分骨质疏松或骨质疏松症女性与健康受试者方面的效能优于 PMI 和 M/M 比值。估计用于检测 T 评分< -1 和 T 评分≤-2.5 的女性的 MCW 截断值分别识别了总共 45%和 34%的受试者。两种截断值的敏感性和特异性均较低，范围在 55%至 70%之间。全景指数在识别轴向骨骼中 BMD 较低的女性方面的能力似乎有限。
Zotero 插件