The relationship between panoramic radiomorphometric indices and the femoral bone mineral density of edentulous patients

Abstract

Objectives To determine the relative efficacy of panoramic radiomorphometric indices in detecting osteoporosis, and optimal thresholds for referral for osteoporosis investigation in edentulous patients. Methods Forty-nine edentulous patients, age 41-78 years, were divided into normal and osteopenic/osteoporotic groups according to femoral bone mineral density. Panoramic radiographs were obtained to determine the mandibular cortical index (C1, normal; C2, mild; and C3, severe erosion of mandibular cortex), mental index (cortical thickness in the mental foramen region), and panoramic mandibular index (ratio of thickness of the mandibular cortex to distance between the inferior margin of the mental foramen and the inferior mandibular cortex). Results were compared using a chi-squared test and Student's t-test. Results Categories C1 and C3 were more frequent in the normal and osteopenic/osteoporotic groups, respectively (p = 0.007). The mean mental index and panoramic mandibular index values were significantly lower in the osteopenic/osteoporotic group than in the normal group (p = 0.002 for mental index, p = 0.019 for panoramic mandibular index). The sensitivity and specificity were 71.4% for the mandibular cortical index. The area under the receiver operating characteristic curve enabled moderately accurate identification of patients with osteoporosis using the mental index and less accurate identification using the panoramic mandibular index. Conclusions The mandibular cortical index and mental index are better than the panoramic mandibular index for identifying patients with osteoporosis. Within the limits of this study, edentulous male or female patients in category C3 with a mental index \3.5 mm should be referred for further osteoporosis investigation.

Extracting the Potential Features of Digital Panoramic Radiograph Images by Combining Radio Morphometry Index, Texture Analysis, and Morphological Features

“…This result almost in line with two previous studies, but these results show a discrepancy with previous studies (Gulsahi et al, 2009;Ledgerton et al, 1999).…”

Feasibility of cone beam computed tomography radiomorphometric analysis and fractal dimension in assessment of postmenopausal osteoporosis in correlation with dual X-ray absorptiometry

“…(3) CT mandibular index (CTI) symbolized the panoramic mandibular index (PMI), which represented the ratio of the thickness of the mandibular cortex to the distance between the middle of the mental foramen and the inferior mandibular cortex. 11 This was measured on the non-orthogonal coronal image obtained after slice preparation (Figure 3). The measurement was made on both sides and the mean value was used in statistical analysis.…”

“…The efficiency of these indices had shown a debate: while some investigations consider them effective in diagnosing osteoporosis, 8,9 others reported that some of these indices are not. [10][11][12] Fractal dimension (FD) analysis is a statistical texture analysis that is based on fractal mathematics for describing complex shapes and structural patterns. It is used to express the texture roughness and indicate figure complexity by characterizing self-similarity of the texture grey-level variations over different scales.…”

Mandibular Cortical Width on Panoramic Images of Children in the Lao People’s Democratic Republic

“…No suitable machines are available in Laos. A number of studies have indicated that a dental panoramic radiograph may be a suitable tool to measure bone mineral densities [12][13][14][15][16][17][18][19][20]24,25) . In this study digital panoramic radiographic equipment was used to obtain the images.…”

“…Images were exported as DICOM image stacks to the Department of Oral and Maxillofacial Radiology, Nihon University School of Dentistry, by a telemedicine system with functions for image viewing, image transfer, DICOM storage real-time video conferencing, and 24 MCW has been shown to be a good measure of bone mass in the mandible compared with the other indices [12][13][14][15][16][17][18][19][20][21][22][23][24][25] . Sisounthone et al 21) have reported that the overall average MCW of 519 Laotian patients aged 7-79 years was lower than that observed in Europeans.…”