title: Relationship of mandibular and cervical vertebral bone density using computed tomography.
abstract: OBJECTIVE
  The purpose of this study is to compare mandibular and cervical vertebral bone density (BD) using CT.
  
  
  METHODS
  Cervical CT images from 114 patients (46 women, 68 men; mean age 49 years) with various clinical symptoms (e.g. headache, vertigo and imbalance) were included in this study. The mandibular and cervical vertebral BD measurements, expressed in Hounsfield units, were performed by the same investigator on these sections.
  
  
  RESULTS
  The relationship between cervical vertebral and mandibular BD was revealed by regression and with correlation analysis. The correlation coefficient was r = 0.269, r(2) = 0.07, P = 0.004, which is statistically significant because of the high number of patients. However, the r(2) was very small, indicating that the power of the relationship is low. The distribution diagrams of the cervical vertebrae and mandible BD between female and male patients were similar. The relationship between age and mandibular BD was very weak (r = 0.033, r(2) = 0.009, P = 0.726); the relationship between age and cervical vertebrae BD was also negatively correlated (r = -0.354, r(2) = 0.13, P = 0.0001). This finding indicates that there is a statistical significance, but that the strength of the relationship is weak (r(2) = 0.13).
  
  
  CONCLUSIONS
  There was a correlation between skeletal and mandibular BD, but the strength of the relationship is low. Mandibular BD for both men and women did not correlate with age; cervical vertebral BD did correlate with age.
authors.affiliation: Deaprtment of Radiology, Faculty of Medicine, Ondokuzmayis University, Tip Fakültesi, Radyoloji, 55139, Samsun, Turkey. ccelenk@omu.edu.tr
authors.forename: C
authors.initials: C
authors.lastname: Celenk
authors.forename: P
authors.initials: P
authors.lastname: Celenk
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D015519:Bone Density; D002574:Cervical Vertebrae / Q000737:chemistry / Q000000981:diagnostic imaging*; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible / Q000737:chemistry / Q000000981:diagnostic imaging*; D008875:Middle Aged; D012737:Sex Factors; D014057:Tomography, X-Ray Computed / Q000379:methods*