Relationship of BMI, skeletal and mandibular density in osteopenia

Abstract

Various indexes could be used in assessing of reduction of density of bones. However value of each index could indicate, or not to indicate exact changes of systemic skeletal density. Aim of this study was to assess accuracy of representing and correlation of body mass index, lumbar and skeletal density and mandibular density of individuals with minor or moderate reduction of bone densities. Materials and method. 9 men (mean age 62.4 yrs.) and 14 women (mean age 65.1 yrs.) were examined. Body mass index (BMI), density of skeleton (g/cm3) (Lunar DPX-L, USA),and density of mandible using panoramic radiograph (Orthopantomograph 10,Siemens,Germany) and digital densitometer (DT II 05, England) were calculated for every subject. Results. Mean values amounted BMI=17.1 kg/m2, skeletal density T=-1.8, and optical density of a bodies of mandibles ρo= 0.98 U/mm2, for men. Pearson's correlation coefficient was 0.324, and Spearman's coefficient was 0.219. Mean values amounted BMI=15.7 kg/m2, skeletal density T=-2.1, and density of mandibles ρo= 0.63 U/mm2, for women. Pearson's correlation coefficient was 0.201, and Spearman's coefficient was 0.167. Conclusion. BMI, T and ρo indicated small or moderate reduction of skeletal density- osteopenic changes in all subjects. Calculated values of statistical parameters indicated small significance in correlations of indexes of density and mass of bones.

Keywords

• density
• bone
• body mass
• body mass index