title: Panoramic radiography measurements, osteoporosis diagnoses and fractures in Japanese men and women.
abstract: OBJECTIVE
  The purpose of this study was to investigate the association of the shape of the mandibular cortex on panoramic radiographs with the risk of an osteoporosis diagnosis without prevalent fractures and with the risk of osteoporotic fractures in Japanese men and women.
  
  
  METHODS
  One thousand and twenty-one subjects aged 40-89 years, who visited our university hospital and underwent panoramic radiography between 2007 and 2013, participated in this study. Eighty-eight patients received a diagnosis of osteoporosis without prevalent fractures, and 55 were diagnosed with osteoporotic fractures. Blinded to the groupings, we classified the shape of the mandibular cortex on panoramic radiographs as normal, moderately eroded or severely eroded.
  
  
  RESULTS
  After adjustment for confounding factors, the odds ratios for an osteoporosis diagnosis associated with moderately eroded and severely eroded mandibular cortices were 1.4 (95% CI, 0.8-2.6) and 2.6 (95% CI, 1.4-5.0), respectively. The odds ratios for an osteoporotic fracture associated with moderately eroded and severely eroded cortices were 0.8 (95% CI, 0.4-1.7) and 1.1 (95% CI, 0.5-2.5), respectively.
  
  
  CONCLUSIONS
  Subjects in Japan with eroded mandibular cortices tended to be at increased risk of osteoporosis diagnoses but not of fractures.
authors.affiliation: Department of Hard Tissue Research, Graduate School of Oral Medicine, Matsumoto Dental University, Shiojiri, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Yamada
authors.forename: K
authors.initials: K
authors.lastname: Uchida
authors.forename: Y
authors.initials: Y
authors.lastname: Iwamoto
authors.forename: N
authors.initials: N
authors.lastname: Sugino
authors.forename: N
authors.initials: N
authors.lastname: Yoshinari
authors.forename: H
authors.initials: H
authors.lastname: Kagami
authors.forename: A
authors.initials: A
authors.lastname: Taguchi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging*; D008875:Middle Aged; D010024:Osteoporosis / Q000175:diagnosis* / Q000453:epidemiology; D058866:Osteoporotic Fractures / Q000175:diagnosis* / Q000453:epidemiology; D012372:ROC Curve; D011862:Radiography, Panoramic; D012307:Risk Factors
keywords: cortex; fracture; mandible; osteoporosis; panoramic radiography