儿童前牙区牙槽骨和基骨骨密度的锥形束CT测量
1材料和方法,2结果,3讨论,4参考文献
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[摘要]目的评估儿童前牙区上下颌牙槽骨和基骨的骨密度。方法选择138例患者的锥形束CT扫描图像，以亨斯菲尔德单位(X线衰减单位Hu)来测定其上下颌切牙区、尖牙区牙槽嵴和基骨骨密质及骨松质的骨密度。
结果上颌切牙区左右两侧相同部位间的骨密度值相比较，差异没有统计学意义(P>0.05)；下颌切牙区左右两侧相同部位的骨密度值相比较，基骨区舌侧骨密质的骨密度值差异有统计学意义(P=0.012)；上颌尖牙区左右两侧相同部位的骨密度值相比较，差异没有统计学意义(P>0.05)；下颌尖牙区左右两侧相同部位的骨密度值相比较，牙槽骨和基骨区骨松质的骨密度值差异有统计学意义，P值分别为0.046和0.002。结论本研究可为前牙区微螺旋种植体植入位置和方法提供一定的数据。
[关键词]儿童；牙槽骨；基骨；骨密度
[中图分类号]R 445[文献标志码]A[doi]10.3969/j.issn.1673-5749.2012.01.007
Density of the anterior area of alveolar and basal bones on the children measured by cone beam computed tomographyWang Jun, Ren Weiping, Long Fei, Li Zhenya.(Dept. of Orthodontics, Oral Medical Center of Gansu Provincial People’s Hospital, Lanzhou 730000, China)
[Abstract]ObjectiveThe purpose of this investigation was to evaluate density value on anterior of the alveolar and basal bones on children. Methods138 cases cone beam computed tomography images were selected. The densities of these bones were measured in Hounsfield units(Hu)for the incisor, canine of the anterior area of alveolar and basal bones on the children. ResultsThere is no significant difference on the same position of the maxillary bilateral(right and left)incisors of the density value(P>0.05).To compare with the incisors of the density value on the same position of the mandibule on left and right, there is significant difference on the base bone on cortical bone density of lingual, P=0.012. There is no significant difference on the same position of the maxillary bilateral(right and left)canine of the density value ......
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