应用全颌曲面断层片研究牙周炎骨密度的改变
Journal of Practical Stomatology(2007)
Abstract
目的:应用PMI指数评价颌骨的骨密度,检测牙周炎患者的下颌骨骨密度改变。方法:选择成人慢性牙周炎患者的全颌曲面断层片30例,相应年龄和性别分布的无牙周炎的全颌曲面断层片30例作为对照,采用PMI指数测量样本的下颌骨骨密度并进行分析。结果:正常组sPMI值为0.2750±0.034,iPMI值为0.5273±0.096,牙周炎患者sPMI值为0.2233±0.024,iPMI值为0.3673±0.069,2组的PMI指数具有显著差异,且与年龄相关。结论:牙周炎患者下颌骨骨密度值较正常组低。PMI指数反映了下颌骨皮质骨量的变化,间接反映颌骨的骨密度,为检测颌骨骨密度的改变提供简便、直观的方法。
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Key words
Panoramic radiography,Panoramic mandibular index,Bone mineral density,Periodontitis
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