Bone mineral density of cancellous bone in edentulous areas: quantitative CT measurement
Huang Ying
Zhang Hui
Cai Yue
Zeng Fan-gang
Guo Ling
Abstract：BACKGROUND:The bone mineral density (BMD) in unit volume can be accurately measured with the theory of quantitative CT.After tooth loss,bone resorption certainly exists in the alveolar bone healing.Therefore,it is important to accurately evaluate the BMD of cancellous bone in the plantation area before implantation.OBJECTIVE:To evaluate the changes in BMD of alveolar cancellous bone after the loss of tooth,and explore whether the BMD shows the differences in different genders,ages and dental sites.METHODS:Corrected voxel values were obtained from the cone-beam CT with the theory of quantitative CT.Ninety patients underwent cone-beam CT,and their BMD (mg/cm3) in dentulous areas and control areas (homonymous region of the same jaw) was obtained.RESULTS AND CONCLUSION:The BMD of alveolar cancellous bone reduced after the loss of tooth (P ＜ 0.001).The BMD reduction of the edentulous cancellous bone,normal cancellous bone and the cancellous bone after tooth loss had no correlation with gender.The BMD reduction of the edentulous cancellous bone and the cance Ilous bone after tooth loss was not associated with age (P ＞ 0.05),while the BMD of the control area decreased with increasing age (P ＜ 0.05).The order of the BMD of cancellous bone was as follows:mandibular posterior region ＞ mandibular anterior region ＞ maxillary anterior region ＞ maxillary posterior region.To conclude,quantitative CT is a available method for detecting the changes in the BMD of alveolar cancellous bone after tooth loss.
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Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 5775-5780 )