Pomenopauzinio amžiaus moterų apatinio žandikaulio ir kulnakaulio kaulų mineralų tankių palyginamoji analizė

Aim of the study is to examine mandibular bone mineral density using panoramic radiography, to evaluate its effect on the number of remaining teeth and the mandibular body height, and to determine the relationship of the panoramic radiomorphometric indices of the mandible with calcaneal bone mineral density in post–menopausal women. Objectives of the study: 1.To analyze the relationship between the panoramic radiomorphometric indices of the mandible indicating mandibular bone mineral density, the optical density of the mandibular bone in panoramic radiography images, and bone mineral density of the calcaneus. 2.To use panoramic radiomorphometric indices of the mandible and densitometry examination to calculate mandibular bone mineral density, to determine its relationship with the number of remaining teeth and the mandibular body height, and to evaluate diagnostic effectiveness of panoramic radiomorphometric indices. 3.To evaluate the effect of changes in mandibular bone mineral density on periodontal tissues. 4.To determine the effect of calcaneal (the general skeletal) bone mineral density on the number of remaining teeth and mandibular body height. 5.To evaluate the relationship of age and the post–menopausal period with bone mineral density in the calcaneus and the mandible, mandibular body height, and the number of remaining teeth. 6.To perform in vitro morphometric analysis of the mandibular cortical bone, and to evaluate the reliability of panoramic radiography in the examination of cortical bone in the mandibular base. Conclusions: 1.In the group of post–menopausal women, mandibular bone mineral density calculated using the mental index (MI), panoramic mandibular index (PMI), and mandibular cortical index (MCI) was statistically significantly related to calcaneal bone mineral density (BMD) (p<0.001). No statistically significant association was found between calcaneal BMD and optical density of the mandible determined on panoramic radiography images. 2.The number of remaining teeth depended on mandibular bone mineral density calculated using MI, PMI (p<0.001), and MCI (p<0.05). Densitometry of the mandible showed a tendency of the number of remaining teeth to be statistically dependent on the optical density of the mandible. 3.Mandibular body height (MRI) was not dependent on mandibular BMD. 4.Panoramic radiomorphometric indices can be used for the evaluation of changes in mandibular bone mineral density. Cortical width in the mandibular base at the mental foramen below 3.14 mm (area – 0.671, sensitivity – 73.5%, specificity – 72.6%) and panoramic mandibular index approaching 0.24 (area – 0.701, sensitivity – 73.0%, specificity – 53.7%) are prognostic indicators of calcaneal BMD reduction. 5.The condition of periodontal tissues was not dependent on mandibular BMD, but due to the inflammatory destruction of periodontal tissues, it was statistically significantly related to the mandibular body height (MRI) (p<0.05). 6.Calcaneal bone mineral density had no effect on the mandibular body height (MRI) or the number of remaining teeth. 7.The subjects’ age and the duration of the post–menopausal period affected the radiomorphometric indices of the mandible (p<0.001), the number of remaining teeth (p<0.01), and calcaneal BMD (p