Srđan, D, Poštić, Dragan, S, Veselinović, Darinka, Stanišić-Sinobad, Ivan, A, Gržetić, O, Torring, Zoran, Rakočević
The aim of investigation was to determine physical-chemic characteristics of selected segments of mandibular corpuses from 2 cadavers which would be indicators to determine changes of bone compositions due to osteoporosis. 3 samples from massive mandibular body from cadaver where teeth of lower arch persisted and 3 samples from mandibular edentulous corpus from another cadaver were investigated. External borders of samples were assigned. In the same x-ray exposing and in identical processing 2 orthopantomographs were made and optical densities(OPDs) of regions of interest were analyzed using DT II 05 (EU(England,UK)). Samples of similar dimensions were cut and then analyzed by scanning-electronic microscopy (Philips,EU). Using bensol as liquid phase on 200C in pycnometer, densities of samples of bones were analyzed. Values of OPDs, in U/mm2, amount: -2.48-sample(S)l, -2.86 S2, -2.51 S3, -0.90 S4, -1.40 S5, -0.62 S6. Statistically significant, to p<0.01 totals of cancellous sites were established in comparisons: of S6 and of S4, of SI and of S5 as well as of S2 and of S4, and to p<0.1 were established in comparisons: of Sl and of S3, of SI and of S6, of S2 and of S5, of S2 and of S6, of S3 and of S4, as well as of S6 and of S4. Mean thickness of cortical lamellae, in mm, amount: 17.9 ± 7.51 in S1, 12.22 + 1.17 in S2, 31.03 ± 8.91 in S3, 9.31 ± 3.89 in S4, 23.9 ± 11.7 in S5 and 4.06 ± 1,02 in S6. Densities in g/cm3, amount: 1.9658 for S1, 2.1141 for S2, 2.0748 for S3, 2.1296 for S4 2.2231 for S5 and 2.1357 for S6. Differences of densities and of compositions of non-osteoporotic mandibular-body samples, and of mandibular osteoporotic samples were determined.
