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目的探讨维吾尔族牙周炎患者的下颌骨骨密度。方法选择中度慢性牙周炎的维吾尔族成人患者20例(男性9例,女性11例,平均年龄25.6岁),另选择无牙周炎的维吾尔族成人患者20例(男性12例,女性8例,平均年龄23.5岁)作为正常对照,40例患者均拍摄数字化全颌曲面断层片,采用曲面体层下颌指数(PMI)为测量指标分析样本的下颌骨骨密度。结果正常对照组sPMI值为0.301±0.126,iPMI值为0.364±0.091;牙周炎患者sPMI值为0.246±0.046,iPMI值为0.318±0.075。两组的PMI指数差异有显著性(P<0.05)。结论维吾尔族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,间接反映了下颌骨的骨密度,为检测下颌骨骨密度提供了简便、直观的方法。同时,下颌骨骨密度的测定结果可能提示全身骨密度情况,但仍需后期结合腰椎、前臂远端1/3的骨密度测定等骨质疏松诊断方法,使其得到早期防治。
Objective To investigate mandibular bone mineral density (BMD) in Uigur periodontitis patients. Methods Twenty patients with Uygur adult with moderate chronic periodontitis were selected, including 20 males (9 males and 11 females, mean age 25.6 years) and 20 adult Uigur patients without periodontitis (12 males and 8 females (Mean age 23.5 years old) as the normal control, 40 patients were taken digital total jaw curved film, the use of curved body mandibular index (PMI) as the measurement index analysis of the mandibular bone mineral density. Results The sPMI value of normal control group was 0.301 ± 0.126, and the iPMI value was 0.364 ± 0.091. The sPMI value of periodontitis patients was 0.246 ± 0.046 and the iPMI value was 0.318 ± 0.075. There was a significant difference in PMI between the two groups (P <0.05). Conclusion The BMD of mandibular periodontitis in Uygur people is lower than that in normal controls. The PMI index reflects the change of mandibular cortical bone mass, which indirectly reflects the bone mineral density of mandible and provides a simple and intuitive method for detecting mandibular bone mineral density. At the same time, the measurement results of mandibular bone mineral density may indicate the whole body BMD, but it still needs to be diagnosed by osteoporosis such as lumbar vertebrae and distal 1/3 of the forearm after osteoporosis.