Background and purpose - The incidence of orthopedic methicillin-resistant Staphylococcus aureus (MRSA) infections is increasing. Vancomycin may therefore play an increasingly important role in orthopedic perioperative antimicrobial prophylaxis. Studies investigating perioperative bone and soft tissue concentrations of vancomycin are sparse and challenged by a lack of appropriate methods. We as...

Background. Bone osteosynthesis is considered one of the most efficient methods treating fractures long tubular bones. Deve­lopment modern computer technology and specialized software makes it possible for a traumatologist to perform preliminary efficiency estimation using fixation plates various designs. Results such studies can significantly depend on calculation model parameters. In papers r...

INTRODUCTION Bone quality is largely dependent on the toughness of the tissue since age-related degradation in toughness makes bone more susceptible to fracture [1]. The observed decrease in bone toughness with age is mainly due to significant decreases in the capacity of the tissue to dissipate energy during the post-yield deformation [2]. Thus, understanding the post-yield behavior of bone is...

aligned and random nanocomposite nanofibrous scaffolds were electrospun from polycaprolactone (pcl), poly (vinyl alcohol) (pva) and hydroxyapatite nanoparticles (nha). the morphology and mechanical characteristics of the nanofibers were evaluated using scanning electron microscopy and tensile testing, respectively. scanning electron microscopy revealed fibers with an average diameter of 123 ± 3...

This study aims to extract teeth and alveolar bone structures in CBCT images automatically, which is a key step image analysis the field of stomatology. In this study, semantic segmentation was used for automatic segmentation. Five marked classes were input U-net neural network training. Tooth hard tissue (including enamel, dentin, cementum), dental pulp cavity, cortical bone, cancellous other ...

the purpose of this study was to determine the influence of platform switching on stress distribution of two different implant systems using three-dimensional (3d) finite element models.six 3d finite element models were created to replicate two different implant systems with peri-implant bone tissue, in which six different implant-abutment configurations were represented: model xive-a: 3.8-mm-d...

BACKGROUND Osteoporosis in long bones involves loss of cortical thickness and of the trabecular microarchitecture. Deterioration and weakening of trabecular bone tissue during osteoporosis imposes greater physiological loads on the cortical shell. However, it is unclear whether trabecular bone significantly contributes to the strength of whole bones under non-physiological impact loads. METHO...

The aim of this study was to evaluate the influence of the high values of insertion torques on the stress and strain distribution in cortical and cancellous bones. Based on tomography imaging, a representative mathematical model of a partial maxilla was built using Mimics 11.11 and Solid Works 2010 softwares. Six models were built and each of them received an implant with one of the following i...

Background and Aim: Bone density is of great assistance in the selection of the proper implant site. The present study aimed to assess the correlation between tissue densities in computed tomography (CT) and three different cone-beam computed tomography (CBCT) units. Materials and Methods: In this descriptive study, a radiographic phantom consisting of a transparent polymethyl methacrylate (PM...