Osteoporotic alterations in a group of different ethnicity Brazilian postmenopausal women: An observational study.
OBJECTIVES
To compare peripheral bone mineral density alterations among Brazilian postmenopausal women from three ethnic groups considering age and body mass index influence; to correlate their bone mineral density with the mandibular cortical index (MCI); and to evaluate the influence of age, body mass index and ethnicity in the MCI using risk factor analysis.


BACKGROUND
Osteoporosis risk is known to have ethical influences. However, little is known about the differences in ethnicity in radiomorphometric indices.


MATERIALS AND METHODS
A total of 150 postmenopausal women with different ethnicities (Caucasian, Asian and Afro-descendant) who underwent peripheral dual X-ray absorptiometry and panoramic examination were included. Bone mineral density and MCI were assessed. Adjusted odds ratio analyses were performed on bone density and MCI considering the effect of age, ethnicity and body mass index. The correlations between the MCI and the dual X-ray absorptiometry results were made.


RESULTS
Old age, low body mass index and non-Afro-descendant were associated with low bone density. Compared with Afro-descendants, Asians and Caucasians have higher chances of having decreased bone mass. For the MCI, statistical analysis showed that age is the only variable associated with osteoporotic alterations in the mandible. Furthermore, an inverse correlation was found between the MCI and the T-scores.


CONCLUSION
Bone density is higher in Brazilian Afro-descendant women than in Caucasians and Asians. Patient's age is associated with bone density and the MCI. The mandibular cortical index is inversely correlated with the peripheral densitometry results within the study ethnic population.
['Munhoz|Luciana|L|http://orcid.org/0000-0003-2375-5935', 'Aoki|Eduardo M|EM|', 'Cortes|Arthur R G|ARG|', 'de Freitas|Cláudio F|CF|', 'Arita|Emiko S|ES|']
D015502:Absorptiometry, Photon D000328:Adult D000368:Aged D044466:Asians D044383:Blacks D015519:Bone Density D001938:Brazil D005006:Ethnicity D005260:Female D006801:Humans D008334:Mandible D008875:Middle Aged D015663:Osteoporosis, Postmenopausal D017698:Postmenopause D012307:Risk Factors D044465:Whites
postmenopausal ethnic groups osteoporosis bone loss panoramic radiography