【摘要】 目的:采用锥形束CT(Cone beam CT,CBCT)测量并对比正常人与慢性牙周病患者的上颌骨牙槽骨的骨密度值,分析上颌骨牙槽骨骨密度与牙周病病变程度的关联。方法:随机选取就诊的病人,按正常人及慢性牙周病变的程度分为4组:正常组、轻度组、中度组和重度组(n=50)。采用CBCT分别测量16牙近、远中牙槽皮质骨和松质骨的HU(Hounsfield Unit,灰度值),以HU代表骨密度,SPSS 22统计软件用于数据分析。结果:正常组、轻度组、中度组和重度组的骨皮质的HU值分别为(885.26±159.87)、(955.21±152.89)、(1052.27±151.81)和(1038.30±165.23)。正常组、轻度组、中度组和重度组的骨松质的HU值分别为(248.02±118.43)、(382.56±145.47)、(469.04±153.39)和(547.97±175.54)。在同类骨质中,除中度皮质组与重度皮质组之间差异没有统计学意义之外,其余各组差异均有统计学意义。结论:随着牙周病变程度的加重,患者上颌骨皮质骨和松质骨的骨密度均有所增加,但中度与重度牙周病患者的骨密度无明显差异。更多还原

【Abstract】 Objective: To analyze the relationship of bone mineral density and the degree of periodontal disease according to measure and compare the bone mineral density of the maxillary alveolar bone in normal and chronic periodontal patients by cone beam computed tomography(CBCT).Methods: Patients were randomly selected and divided into 4 groups according to normal people and the degree of periodontal diseases as normal,mild,moderate,and severe(n = 50).The Hounsfield Unit(HU) of the proximal and distal alveolar cortical bone and cancellous bone were record by CBCT,HU was presented as bone mineral density.The analysis was performed using SPSS 22 statistical software.Results: The HU values of the cortical bones of the normal,mild,moderate,and severe groups were(885.26±159.87),(955.21±152.89),(1052.27±151.81) and(1038.30±165.23),respectively.The HU values of cancellosis in the normal,mild,moderate,and severe groups were(248.02 ±118.43),(382.56 ±145.47),(469.04 ±153.39),and(547.97 ± 175.54),respectively.In the same type of bone,the differences among all the groups were statistically significant except for the difference between the moderate cortical group and the severe cortical group.Conclusion: With the deterioration of the degree of periodontal disease,a raised the bone mineral density was shown inthe maxillary cortical bone and cancellous bone,but there is no significant difference in bone mineral density between patients with moderate and severe periodontal disease.更多还原