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Objective: To verify whether fractal dimensions (FD) on the mandibular trabecular and cortical bone and mandibular cortical width (MCW) differ between patients with normal bone mineral density (BMD) and osteoporosis., Study Design: In this retrospective study, 133 dental panoramic radiographs from men aged >60 years and postmenopausal women with a bone densitometry report of the lumbar spine and hip classified as either normal or osteoporotic were selected. Fractal dimensions of five standardized trabecular and cortical mandibular regions of interest and mandibular cortical width were measured on the panoramic radiographs by an experienced oral radiologist, blinded to the densitometric diagnosis. The following statistical analyses were performed: ANOVA and a forward logistic stepwise regression to verify associations between dental panoramic measurements and the densitometric diagnosis. P values less than .05 indicated statistical significance., Main Outcome Measures: Fractal dimension and mandibular cortical width., Results: Differences were found in the FD values on mandibular cortical bone and MCW between patients with normal BMD and with osteoporosis, but not in the FD values of trabecular bone. The odds of having lower mean values of MCW and FD on cortical bone were 2.16, 3125 and 1005 times in osteoporotic patients, respectively, compared with patients with normal BMD., Conclusion: The values of FD analysis on mandibular cortical bone and MCW were lower in women with osteoporosis. A well-adjusted logistic regression model showed that cortical bone measurements might be considered as auxiliary tools to referring patients for DXA exam., (Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.)

Objective: The aim of this study was to assess relationships between panoramic indexes, bone mineral density (BMD), and osteoporotic fractures in men >60 years old., Study Design: Body height and weight, body mass index, lumbar spine and hip BMD, and the presence of osteoporotic fractures were determined in the 127 studied men. Dental panoramic radiographs (DPRs) were used for measuring mandibular cortical indexes., Results: BMDs were lower in patients with thinning and resorption of mandibular cortex. No association was found between mandibular indexes and the presence of osteoporotic fractures. In a forward stepwise logistic regression model, the odds of having a T score ≤-2.5 was increased by 1.97 times for every 1-mm reduction in average mandibular cortical width., Conclusions: DPRs could show pronounced thinning of the inferior mandibular cortices in men >60 years old. However, there was no apparent association between vertebral fragility fractures and the appearance of mandibular cortex in elderly men., (Copyright © 2011 Mosby, Inc. All rights reserved.)

Objectives: The aim was to test for correlations of 7 panoramic radiomorphometric indices with lumbar spine and hip bone mineral densities (BMDs) and to test the accuracy of these indices for predicting osteoporosis and a T-score < or =-2.0., Study Design: Mandibular cortical indices, simple visual estimations of cortical widths, mental and antegonial indices, antegonial depth, gonial and antegonial angles, and BMD were measured in 351 postmenopausal women., Results: Associations were demonstrated between BMDs, qualitative indices, and cortical measurements. In the case of severely eroded mandibular cortices, the odds ratio (OR) for osteoporosis (according to the World Health Organization criteria) was 4.82 and the OR for a T-score < or =-2.0, the threshold to begin treatment, was 10.87. In the case of very thin mandibular cortices, the ORs were 8.02 and 5.46 for osteoporosis and a T-score < or =-2.0, respectively. The mental index cutoff for osteoporosis was 3.15 mm., Conclusions: Antegonial indices and gonial angles cannot be used as osteoporosis predictors. The most accurate indices were the mental index, mandibular cortical index, and visual estimation of cortical width., (Copyright 2010 Mosby, Inc. All rights reserved.)