Assessment of jawbone trabecular bone structure amongst XXXX @entity1 by cone-beam computed tomography: the OSTEOSYR project.

@entity3604 @entity1 @entity170
OBJECTIVE: To assess the trabecular bone structure of jawbones and the dens (the odontoid process of the second cervical vertebra) amongst @entity3604 and nonosteoporotic @entity1 using cone-beam computed tomography (CBCT). Analysis of the dens trabecular bone structure aimed to test the validity of CBCT in such analysis. METHODS: Thirty-eight @entity1 who went under dual-energy X-ray absorptiometry (DXA) examination were scanned by CBCT. Cuboids from different areas of jawbones and the dens were extracted from each scan. Trabecular thickness (Tb.Th), trabecular separation (Tb.S), bone volume fraction (BV/TV), specific bone surface (BS/TV) and connectivity density were calculated. Student's t-test, Pearson correlation, and logistic regression analysis were used to explore differences in these measures between groups. RESULTS: Jawbone-derived measures showed insignificant differences (P  >  0.05) between @entity3604 , and weak correlations with femoral neck and lumbar vertebrae T-scores (r   <=  0.4). Dens-derived measures, however, resulted in the opposite (r  =  0.34-0.38 [P  value  =  0.02-0.036] and r  =  0.48-0.61 [P  value   <=  0.003]) and the highest accuracy of @entity170 prediction: 84.2% and 78.9% respectively. CONCLUSION: Trabecular bone structure of the mandible and maxilla is not affected in @entity170 as assessed by CBCT. Dens trabecular bone analysis revealed the opposite, so some trabecular bone measures may be assessed by CBCT, which may aid in predicting @entity170 .
