医学
锥束ct
骨量减少
骨质疏松症
骨矿物
骨密度
皮质骨
接收机工作特性
核医学
牙科
放射科
计算机断层摄影术
内科学
解剖
作者
Sâmila Gonçalves Barra,Isadora Pereira Gomes,Tânia Mara Pimenta Amaral,Cláudia Borges Brasileiro,Lucas Guimarães Abreu,Ricardo Alves Mesquita
标识
DOI:10.1016/j.oooo.2020.07.016
摘要
Objective The aim of this study was to evaluate new radiomorphometric indices in cone beam computed tomography (CBCT) for assessing bone mineral density (BMD) status in postmenopausal women. Study Design Mandibular inferior cortical bone thickness was evaluated in 48 postmenopausal women in cross-sectional images at 4 sites: (1) symphysis (S): cross-sectional image equidistant from the centers of the right and left mental foramina (MF); (2) anterior (A): 10 mm anterior to the MF; (3) molar (M): 10 mm posterior to the MF; and (4) posterior (P): 25 mm posterior to the MF. Participants underwent dual-energy x-ray absorptiometry and were divided into normal, osteopenia, and osteoporosis groups. In the study, t tests with Bonferroni correction were conducted. Statistical significance was set at P < .017. Receiver operator characteristic (ROC) analyses were performed. Results Mean S index was significantly lower in osteoporosis than in osteopenia (P = .005). Mean M index was significantly lower in osteopenia (P < .001) and osteoporosis (P = .001) than in normal individuals. Mean P index was significantly lower in osteoporosis than in normal patients (P = .008). ROC values ranged between 0.643 and 0.740. Cortical thicknesses separating normal from abnormal varied from 1.73 mm to 3.37 mm. Conclusions M and P indices in CBCT may be useful for identifying low BMD in postmenopausal women. The aim of this study was to evaluate new radiomorphometric indices in cone beam computed tomography (CBCT) for assessing bone mineral density (BMD) status in postmenopausal women. Mandibular inferior cortical bone thickness was evaluated in 48 postmenopausal women in cross-sectional images at 4 sites: (1) symphysis (S): cross-sectional image equidistant from the centers of the right and left mental foramina (MF); (2) anterior (A): 10 mm anterior to the MF; (3) molar (M): 10 mm posterior to the MF; and (4) posterior (P): 25 mm posterior to the MF. Participants underwent dual-energy x-ray absorptiometry and were divided into normal, osteopenia, and osteoporosis groups. In the study, t tests with Bonferroni correction were conducted. Statistical significance was set at P < .017. Receiver operator characteristic (ROC) analyses were performed. Mean S index was significantly lower in osteoporosis than in osteopenia (P = .005). Mean M index was significantly lower in osteopenia (P < .001) and osteoporosis (P = .001) than in normal individuals. Mean P index was significantly lower in osteoporosis than in normal patients (P = .008). ROC values ranged between 0.643 and 0.740. Cortical thicknesses separating normal from abnormal varied from 1.73 mm to 3.37 mm. M and P indices in CBCT may be useful for identifying low BMD in postmenopausal women.
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