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Dentomaxillofac Radiol. 2011 Mar;40(3):154-9. doi: 10.1259/dmfr/30045588.

Detecting young Japanese adults with undetected low skeletal bone density using panoramic radiographs.

Author information

1
Department of Oral and Maxillofacial Radiology, School of Dentistry, Matsumoto Dental University, 1780 Gobara Hirooka, Shiojiri, Japan. akiro@po.mdu.ac.jp

Abstract

OBJECTIVE:

The cortical width below the mental foramen of the mandible determined from panoramic radiographs is a useful screening tool for identifying elderly individuals with a low skeletal bone mineral density (BMD). However, whether the mandible cortical width (MCW) is useful for identifying a low skeletal BMD in men and women of 40 years or younger is not known.

METHODS:

The BMD of the calcaneus was measured by ultrasonography bone densitometry in 158 men and 76 women aged 18-36 years. A logistic regression analysis adjusted for age was used to calculate the odds ratios and 95% confidence interval (CI) of having a low calcaneal BMD, according to the quartiles of the MCW. The areas under the receiver operator characteristic curve (AUC) for identifying participants with a low calcaneal BMD using the MCW were assessed to evaluate the diagnostic efficacy of the MCW.

RESULTS:

In men, the adjusted odds ratios of a low calcaneal BMD associated with the second, third and lowest quartiles of MCW were 5.66 (95% CI, 0.61-52.23), 5.43 (95% CI, 0.59-50.18) and 33.22 (95% CI, 3.97-276.94), respectively, compared with the highest quartile, while no significant trend in the adjusted odds ratios was observed in women. The AUC for identifying participants with a low calcaneal BMD based on the MCW was 0.796 (95% CI, 0.702-0.890) in men and 0.593 (95% CI, 0.398-0.788) in women.

CONCLUSION:

MCW determined from panoramic radiographs can be used to identify undetected low calcaneus BMD in young adult men, but not in young adult women.

PMID:
21346081
PMCID:
PMC3611450
DOI:
10.1259/dmfr/30045588
[Indexed for MEDLINE]
Free PMC Article
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