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Digital panoramic radiographs are useful for diagnosis of osteoporosis in Korean postmenopausal women
Author(s) -
Kim OkSu,
Shin MinHo,
Song InHwa,
Lim IlGu,
Yoon SukJa,
Kim OkJoon,
Lee YoungHoon,
Kim YoungJoon,
Chung HyunJu
Publication year - 2016
Publication title -
gerodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.7
H-Index - 54
eISSN - 1741-2358
pISSN - 0734-0664
DOI - 10.1111/ger.12134
Subject(s) - medicine , osteoporosis , femoral neck , radiography , bone mineral , receiver operating characteristic , lumbar , dual energy x ray absorptiometry , nuclear medicine , radiology , orthodontics , dentistry
Objective The purpose of this study was to determine whether digital panoramic radiographs could be used for the diagnosis of osteoporosis through evaluation of the radiographs based on the correlation with bone mineral density ( BMD ). Methods One hundred and ninety‐four post‐menopausal women were selected from participants who had participated in the Dong‐gu study. Panoramic radiographic indices measured are mental index ( MI ), mandibular cortical index ( MCI ) and simple visual estimation ( SVE ). BMD at the lumbar spine and proximal femur was measured by dual‐energy X‐ray absorptiometry ( DXA ). The Pearson's correlation test was performed to analyse the correlation between MI and age and BMD at the lumbar spine, femoral neck and total hip. Multiple linear regression analysis was performed to analyse the association of MI , MCI and SVE with BMD after adjusting for age, height and weight. To determine the optimal cut‐off point of MI for the diagnosis of osteoporosis, the receiver operating characteristic analysis was performed. Results The MI was positively correlated with BMD s: lumbar spine: r = 0.36, femoral neck: r = 0.59 and total hip: r = 0.58 ( p < 0.001). As age increased, MI decreased ( r = −0.46). BMD at the lumbar spine and total hip were significantly lower in participants with reduction of mandibular width, thinning and resorption of mandibular cortex by the MI , SVE and MCI , respectively. The optimal cut‐off value of MI for the diagnosis of spinal osteoporosis was 2.22 mm. Conclusion Thickness and morphological changes of mandibular inferior cortical bone are associated with BMD , independent of age, height and weight. These results suggest that MI , MCI and SVE may be useful indices for the diagnosis of osteoporosis in a Korean population.